Dr Ata Khalid

  • Research Fellow (Electronic and Nanoscale Engineering)

telephone: 01413304074
email: Ata.Khalid@glasgow.ac.uk

Research interests

Ata Khalid received his PhD from Kings College London in electronic device engineering in 2000. He worked several years in Kings to develop MMIC design and fabrication, development of HBTs and HEMTs. In 2004 he moved to school of engineering at University of Glasgow to develop solid state THz radiation source technology based on planar Gunn diodes. He is member of IEEE and Institute of Physics (IOP). He is one of the 2013 IEEE T-ED Golden Reviewer.

Grants

Current grants:

EC-funded H2020 project; Grant Agreement Number 645369  iBROW  January 2015  €3.9m   Co-I

 

Past grants:

EPSRC  (EP/H011862/1) Novel Thermal Management of Power Electronic Devices: High Power High Frequency Planar Gunn Diodes, September 2009, £450K,  Co-I

Teaching

ENG5174 MSc Nano Fabrication

Additional information

Publications

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Jump to: 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1992 | 1991
Number of items: 98.

2015

Maricar, M. I. , Khalid, A., Cumming, D. S. R., and Oxley, C. H. (2015) Improving the quality factor of the coplanar waveguide resonator. Microwave and Optical Technology Letters, 57(6), pp. 1323-1325. (doi:10.1002/mop.29082)

Glover, J., Khalid, A., Stephen, A., Dunn, G., Cumming, D., and Oxley, C. H. (2015) Micro-coolers fabricated as a component in an integrated circuit. Semiconductor Science and Technology, 30(1), 015005. (doi:10.1088/0268-1242/30/1/015005)

Maricar, M. I., Khalid, A., Dunn, G., Cumming, D., and Oxley, C.H. (2015) Experimentally estimated dead space for GaAs and InP based planar Gunn diodes. Semiconductor Science and Technology, 30(1), 012001. (doi:10.1088/0268-1242/30/1/012001)

2014

Papageorgiou, V., Khalid, A., Li, C., Steer, M. J., and Cumming, D. R.S. (2014) Integration techniques of pHEMTs and planar Gunn diodes on GaAs substrates. Solid-State Electronics, 102, pp. 87-92. (doi:10.1016/j.sse.2014.06.006)

Glover, J., Khalid, A., Cumming, D.R.S., Montes Bajo, M. , Kuball, M., Stephen, A., Dunn, G.M., and Oxley, C.H. (2014) On wafer thermal characterization of miniature gallium arsenide microcoolers with thermal loading from DC probes. Microwave and Optical Technology Letters, 56(11), pp. 2699-2700. (doi:10.1002/mop.28681)

Maricar, M. I., Glover, J., Khalid, A., Li, C., Evans, G., Cumming, D. S.R., and Oxley, C. H. (2014) An AlGaAs/GaAs-based planar Gunn diode oscillator with a fundamental frequency operation of 120 GHz. Microwave and Optical Technology Letters, 56(10), pp. 2449-2451. (doi:10.1002/mop.28606)

Maricar, M. I. , Khalid, A., Glover, J., Evans, G.A., Vasileious, P., Li, C., Cumming, D., and Oxley, C.H. (2014) Extraction of second harmonic from the In0.57Ga0.47As planar Gunn diode using radial stub resonators. Solid-State Electronics, 99, pp. 38-40. (doi:10.1016/j.sse.2014.05.011)

Papageorgiou, V., Khalid, A.-u.-H., Li, C., and Cumming, D. R.S. (2014) Co-fabrication of planar Gunn diode and HEMT on InP substrate. IEEE Transactions on Electron Devices, 61(8), pp. 2779-2784. (doi:10.1109/TED.2014.2331368)

Maricar, M. I., Glover, J., Evans, G., Khalid, A.-u.-H., Cumming, D., and Oxley, C. (2014) Design and characterization of a novel diamond resonator. Microwave and Optical Technology Letters, 56(7), pp. 1691-1693. (doi:10.1002/mop.28418)

Khalid, A. et al. (2014) Terahertz oscillations in an In0.53Ga0.47As submicron planar gunn diode. Journal of Applied Physics, 115(11), p. 114502. (doi:10.1063/1.4868705)

Al-Khalidi, A., Gallacher, K., Khalid, A., Paul, D., and Wasige, E. (2014) 0.25 Ω-mm Ohmic contacts to AlN/GaN HEMT structure with in-situ SiN passivation. In: 7th Wide Band Gap Semiconductors and Components Workshop, Frascati, Italy, 11-12 Sep 2014,

Al-Khalidi, A., Khalid, A., and Wasige, E. (2014) Comparison of AlGaN/GaN HEMTs on Silicon, Sapphire and SiC substrates- a thermal perspective. In: Compound Semiconductor Week 2014, Montpellier, France, 11–15 May 2014,

Alharbi, K.H., Ofiare, A., Wang, J., Khalid, A., Cumming, D., and Wasige, E. (2014) Radiation pattern characterisation setup for G-band planar yagi antennas. In: 2nd Annual Active and Passive RF Devices Seminar, Birmingham, UK, 29 Oct 2014,

Faramehr, S., Al-Khalidi, A., Khalid, A., Wasige, E., Igić, P., and Kalna, K. (2014) Device simulation and optimization of i-GaN capped AlGaN/AlN/GaN HEMT. In: UK Semiconductors 2014, Sheffield, UK, 9-10 Jul 2014,

Khalid, A., Thoms, S., Macintyre, D., Thayne, I.G., and Cumming, D.R.S. (2014) Fabrication of submicron planar Gunn diode. In: 26th International Conference on Indium Phosphide and Related Materials, Montpelier, France, 11-15 May 2014, (doi:http://dx.doi.org/10.1109/ICIPRM.2014.6880542)

Khalid, A., Wang, J., Ofiare, A., Alharbi , K., Cumming, D., and Wasige, E. (2014) Resonant tunneling and planar Gunn diodes: a comparison of two solid state sources for terahertz technology. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Ofiare, A., Alharbi, K. , Khalid, A., Wang, J., Cumming, D., and Wasige, E. (2014) Wideband planar Yagi antennas for millimetre wave frequency applications. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Stephen, A., Dunn, G.M., Glover, J., Oxley, C. H., Montes Bajo, M., Cumming, D.R.S., Khalid, A., and Kuball, M. (2014) Micro-cooler enhancements by barrier interface analysis. AIP Advances, 4(2), 027105. (doi:10.1063/1.4865251)

Wang, J., Alharbi , K., Ofiare, A., Khalid, A., Wang, L., Cumming, D., and Wasige, E. (2014) Series coupled resonant tunneling diode oscillators for terahertz applications. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Wang, J., Wang, L., Li, C., Alharbi, K., Khalid, A., and Wasige, E. (2014) W-band InP-based resonant tunnelling diode oscillator with milliwatt output power. In: 26th International Conference on Indium Phosphide and Related Materials, Montpelier, France, 11-15 May 2014, pp. 1-2. (doi:10.1109/ICIPRM.2014.6880531)

2013

Ismaeel Maricar, M. et al. (2013) Planar gunn diode characterisation and resonators elements to realise oscillator circuits. In: International Conference on Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET-2013), Chennai, India, 24-26 Jul 2013, pp. 597-601. (doi:10.1109/ICANMEET.2013.6609384)

Glover, J., Oxley, C.H., Khalid, A., Cumming, D.R.S., Montes, M., Kuball, M., and Dunn, G.M. (2013) Novel thermal management of power electronic devices: high power high frequency planar gunn diodes. In: EPSRC Centre for Power Electronics – Launch Event, Nottingham, UK, 1 Jul 2013, (Unpublished)

Li, C., Lok, L.B., Khalid, A., Papageorgiou, V., Grant, J., and Cumming, D.R.S. (2013) Millimeter-wave coplanar stripline power dividers. International Journal of Microwave and Wireless Technologies, 5(3), pp. 205-212. (doi:10.1017/S1759078713000421)

Khalid, A., Li, C., Dunn, G.M., and Cumming, D.R.S. (2013) Multi-channel GaAs-based planar gunn diodes. In: 40th International Symposium on Compound Semiconductors, Kobe, Japan, 19-23 May 2013,

Khalid, A.-u.-H., Glover, J., Hopper, R., Papageorgiou, V., Montes, M., Kuball, M., Dunn, G., Stephen, A., Oxley, C., and Cumming, D.R.S. (2013) Fabrication of integrated planar gunn diode and micro-cooler on GaAs substrate. In: 40th International Symposium on Compound Semiconductors, Kobe, Japan, 19-23 May 2013,

Montes Bajo, M., Dunn, G., Stephen, A., Khalid, A., Cumming, D.R.S., Oxley, C.H., Glover, J., and Kuball, M. (2013) Impact ionisation electroluminescence in planar GaAs-based heterostructure gunn diodes: spatial distribution and impact of doping non-uniformities. Journal of Applied Physics, 113(12), Art. 124505. (doi:10.1063/1.4798270 )

Khalid, A.-u.-H., Li, C., Papageorgiou, V., Pilgrim, N.J., Dunn, G.M., and Cumming, D. (2013) A 218-GHz second-harmonic multiquantum well GaAs-based planar Gunn diodes. Microwave and Optical Technology Letters, 55(3), pp. 686-688. (doi:10.1002/mop.27393)

Khalid, A. et al. (2013) In0.53Ga0.47As planar Gunn diodes operating at a fundamental frequency of 164 GHz. IEEE Electron Device Letters, 34(1), pp. 39-41. (doi:10.1109/LED.2012.2224841)

Li, C., Lok, L.B., Khalid, A., Papageorgiou, V., Grant, J., and Cumming, D. (2013) A coplanar ring power divider with high isolation for V-band and W-band applications. In: 42nd European Microwave Conference (EuMC), Amsterdam, The Netherlands, 29 Oct- 01 Nov 2012. IEEE: New York, NY, USA, pp. 57-60. ISBN 9781467322157

Papageorgiou, V., Khalid, A., Li, C., Dunn, G. M., and Cumming, D. R. S. (2013) The development of planar Gunn diodes for the realisation of MMIC oscillators. In: IET 1st Annual Active and Passive RF Devices Seminar, Glasgow, UK, 29 Oct. 2013, pp. 55-58. (doi:10.1049/ic.2013.0248)

Papageorgiou, V., Khalid, A., Steer, M. J., Li, C., and Cumming, D. R. S. (2013) Monolithic Implementation of a Planar Gunn Diode and a pHEMT. In: HETECH 2013: 22nd European Workshop on Heterostructure Technology, Glasgow, UK, 9-11 Sept. 2013, (Unpublished)

Papageorgiou, V., Khalid, A., Steer, M. J., Li, C., and Cumming, D. R. S. (2013) Monolithic fabrication of a planar Gunn diode and a pHEMT side-by-side. In: ESSDERC/ESSCIRC 2013: 2013 European Solid-State Device Research and 2013 European Solid-State Circuits Conference, Bucharest, Romania, 16-20 Sept. 2013, pp. 111-114. (doi:10.1109/ESSDERC.2013.6818831)

Papageorgiou, V., Khalid, A.H., Li, C., and Cumming, D. (2013) Simulation and fabrication of InGaAs planar Gunn diode on InP substrate. In: 2013 International Conference on Indium Phosphide and Related Materials (IPRM), Kobe, Japan, 19-23 May 2013,

Papageorgiou, V., Khalid, A., and Cumming, D. R.S. (2013) One-step air bridge fabrication technique using 3D e-beam lithography. In: MNE2013: 39th International Conference on Micro and Nano Engineering, London, UK, 16-19 Sept. 2013,

Stephen, A., Dunn, G.M., Oxley, C.H., Glover, J., Montes Bajo, M., Cumming, D.R.S., Khalid, A., and Kuball, M. (2013) Improvements in thermionic cooling through engineering of the heterostructure interface using Monte Carlo simulations. Journal of Applied Physics, 114(4), 043717. (doi:10.1063/1.4817087)

2012

Li, C., Khalid, A., Papageorgiou, V., Lok, L.B., and Cumming, D.R.S. (2012) A wideband CPW ring power combiner with low insertion loss and high port isolation. IEEE Microwave and Wireless Components Letters, 22(11), pp. 580-582. (doi:10.1109/LMWC.2012.2224854)

Khalid, A., Li, C., Grant, J., Saha, S., Ferguson, S., and Cumming, D. (2012) Simple e-beam air-bridge technology for mm-wave applications. Microelectronic Engineering, 98, pp. 262-265. (doi:10.1016/j.mee.2012.06.006)

Saha, S.C., Grant, J.P., Khalid, A., and Cumming, D. (2012) Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating. Journal of Biomedical Optics, 17, 067006. (doi:10.1117/1.JBO.17.6.067006)

Montes, M., Dunn, G., Stephen, A., Khalid, A., Li, C., Cumming, D., Oxley, C.H., Hopper, R.H., and Kuball, M. (2012) Reduction of impact ionization in GaAs-based planar gunn diodes by anode contact design. IEEE Transactions on Electron Devices, 59(3), pp. 654-660. (doi:10.1109/TED.2011.2177094)

Saha, S., Grant, J., Khalid, A., and Cumming, D. (2012) Terahertz frequency-domain spectroscopy method for vector characterization of liquid using an artificial dielectric. IEEE Transactions on Terahertz Science and Technology, 2(1), pp. 113-122. (doi:10.1109/TTHZ.2011.2177172)

2011

Li, C., Khalid, A., Caldwell, S.H.P., Holland, M., Dunn, G.M., Thayne, I.G., and Cumming, D.R.S. (2011) Design, fabrication and characterization of In0.23Ga0.77As-channel planar Gunn diodes for millimeter wave applications. Solid-State Electronics, 64(1), pp. 67-72. (doi:10.1016/j.sse.2011.07.008)

Li, C., Lok, L.B., Khalid, A., Thayne, I.G., and Cumming, D.R.S. (2011) Investigation of loading effect on power performance for Planar Gunn diodes using load-pull measurement technique. IEEE Microwave and Wireless Components Letters, 21(10), pp. 556-558. (doi:10.1109/LMWC.2011.2163496)

Li, C., Khalid, A., Caldwell, S.H.P., Pilgrim, N.J., Holland, M.C., Dunn, G.M., and Cumming, D.R.S. (2011) Enhancement of power and frequency in Planar Gunn diodes by introducing extra delta-doping layers. Microwave and Optical Technology Letters, 53(7), pp. 1624-1626. (doi:10.1002/mop.26071)

Grant, J., Ma, J., Saha, S., Lok, L.B., Khalid, A., and Cumming, D.R.S. (2011) Polarization insensitive terahertz metamaterial absorber. Optics Letters, 36(8), pp. 1524-1526. (doi:10.1364/OL.36.001524)

Li, C., Khalid, A., Lok, L.B., and Cumming, D. (2011) Novel on-wafer measurement technique for passive multiport devices in millimeter wave frequency range. In: 9th Millimeter-Wave User Group Meeting, Glasgow, UK, 31 March 2011, (Unpublished)

Ma, Y., Chen, Q., Grant, J., Saha, S.C., Khalid, A., and Cumming, D.R.S. (2011) A terahertz polarization insensitive dual band metamaterial absorber. Optics Letters, 36(6), pp. 945-947. (doi:10.1364/OL.36.000945)

Khalid, A., Li, C., Holland, M.C., Gunn, D.M., and Cumming, D.R.S. (2011) Novel composite contact design and fabrication for planar Gunn devices for millimeter-wave and terahertz frequencies. Physica Status Solidi C, 8(2), pp. 316-318. (doi:10.1002/pssc.201000529)

Pilgrim, N.J., Khalid, A., Li, C., Dunn, G.M., and Cumming, D.R.S. (2011) Contact shaping in planar Gunn diodes. Physica Status Solidi C, 8(2), pp. 313-315. (doi:10.1002/pssc.201000539)

Khalid, A., Li, C., Grant, J., Saha, S., Ferguson, S., and Cumming, D. (2011) A simple air bridge technology for mm-wave applications. In: 37th International Conference on Micro and Nano Engineering: MNE 2011, Berlin, 19 - 23 September 2011,

Li, C., Lok, L.B., Khalid, A., and Cumming, D. (2011) A broadband circular combiner/divider for planar Gunn oscillators. In: 2nd Annual Passive RF and Microwave Components Seminar. The Institution of Engineering and Technology, pp. 15-20. ISBN  9781849193221 (doi:10.1049/ic.2011.0196)

Li, C., Lok, L.B., Khalid, A., and Cumming, D.R.S. (2011) Coplanar ring divider with wideband high isolation performance. Progress in Electromagnetics Research Letters, 25, pp. 1-10.

2010

Saha, S., Ma, Y., Grant, J., Khalid, A., and Cumming, D. (2010) Imprinted quarter wave plate at terahertz frequency. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 28(6), C6M83-C6M87. (doi:10.1116/1.3497023)

Khalid, A., Li, C., and Cumming, D. (2010) Vertical scaling of multi-stack Planar Gunn diodes. 2010 International Semiconductor Conference (CAS), 2, pp. 427-430. (doi:10.1109/SMICND.2010.5650562)

Li, C., Khalid, A., Lok, L., and Cumming, D. (2010) Low power signal detection in emerging transferred electron devices using vector network analyser above 100 GHz. In: 8th NPL Millimeter-wave Users's Group Meeting, London, UK, 1 Oct 2010,

Li, C., Khalid, A., Lok, L.B., Holland, M., and Cumming, D. (2010) Millimeter-wave planar Gunn diodes. In: UK Semiconductors 2010, Sheffield, UK, 7-8 Jul 2010, (Unpublished)

Ma, Y., Chen, Q., Khalid, A.H., Saha, S.C., and Cumming, D. R. S. (2010) Terahertz dual-band resonator on silicon. Optics Letters, 35(4), pp. 469-471. (doi:10.1364/OL.35.000469)

Li, C., Khalid, A., Lok, L.B., Pilgrim, N.J., Holland, M., Dunn, G.M., and Cumming, D. (2010) An In0.23Ga0.77As-based pHEMT-like Planar Gunn Diode Operating at 116 GHz. In: 35th International Conference on Infrared, Millimeter and Terhertz Waves, Rome, Italy, 5 -10 September 2010,

Li, C., Khalid, A., Lok, L.B., Pilgrim, N.J., Holland, M., Dunn, G.M., and Cumming, D. (2010) An In0.23Ga0.77As-based pHEMT-like Planar Gunn Diode Operating at 116 GHz. In: 35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy, 5 - 10 September 2010,

Lok, L.B., Li, C., Khalid, A., Pilgrim, N.J., Dunn, G.M., and Cumming, D. (2010) Demonstration of the Self-Mixing Effect with a Planar Gunn Diode at Millimeter-Wave Frequency. In: 35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy, 5 -10 September 2010,

Ma, Y., Khalid, A., Saha, S.C., Grant, J.P., and Cumming, D.R.S. (2010) THz band pass filter on plastic substrates and its application on biological sensing. In: IEEE Photonics Society Winter Topicals Meeting Series, Majorca, Spain, Jan 11-13, 2010, pp. 50-51.

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Fabrication of Silicon Quarter Wave Plate at Terahertz Frequency. In: IEEE Photonics Society Winter Topicals Meeting Series, Majorca, Spain, Jan 11-13, 2010, pp. 38-39.

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Imprinted terahertz artificial dielectric quarter wave plates. Optics Express, 18(12), pp. 12168-12175. (doi:10.1364/OE.18.012168)

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Low-loss terahertz artificial dielectric birefringent quarter-wave plates. IEEE Photonics Technology Letters, 22(2), pp. 79-81. (doi:10.1109/LPT.2009.2036242 )

2009

Aberdeen University - Research and Innovation; University Court of the University of Glasgow (2009) Semiconductor device for generating an oscillating voltage. .

Khalid, A., Holland, M.C., Stanley, C.R., Thayne, I.G., Cumming, D.S.R., Pilgrim, N., and Dunn, G. (2009) Gunn oscillations in planar heterostructure devices. In: 4th Annual EMRS DTC Technical Conference , Edinburgh, UK, 7-8 Jul 2009,

Khalid, A., Li, C., Dunn, G., Pilgrim, N., and Cumming, D.R.S. (2009) Observation of multiple domains in a planar Gunn diode. In: EuMC 2009: European Microwave Conference: 28 September - 2 October 2009, Rome, Italy. IEEE Computer Society: Piscataway, N.J., USA, pp. 298-300. ISBN 9781424447497

Li, C., Khalid, A., Pilgrim, N., Holland, M.C., Dunn, G., and Cumming, D.R.S. (2009) Novel planar Gunn diode operating in fundamental mode up to 158 GHz. Journal of Physics: Conference Series, 193(1), 012029. (doi:10.1088/1742-6596/193/1/012029)

Ma, Y., Khalid, A., Drysdale, T.D., and Cumming, D.R.S. (2009) Direct fabrication of terahertz optical devices on low-absorption polymer substrates. Optics Letters, 34(10), pp. 1555-1557. (doi:10.1364/OL.34.001555)

Pilgrim, N.J., Macpherson, R.F., Khalid, A., Dunn, G.M., and Cumming, D.R.S. (2009) Multiple and broad frequency response Gunn diodes. Semiconductor Science and Technology, 24(10), (doi:10.1088/0268-1242/24/10/105010 )

Shi, X.H., Cleary, A., Khalid, A., and Cumming, D.R.S. (2009) Multiple plasmon resonances at terahertz frequencies from arrays of arsenic doped silicon dots. Microelectronic Engineering, 86(4-6), pp. 1111-1113. (doi:10.1016/j.mee.2008.12.070)

2008

Pilgrim, N.J., Khalid, A., Dunn, G.M., and Cumming, D.R.S. (2008) Gunn oscillations in planar heterostructure diodes. Semiconductor Science and Technology, 23(7), 075013. (doi:10.1088/0268-1242/23/7/075013 )

2007

Khalid, A.H., Pilgrim, N.J., Dunn, G.M., Holland, M.C., Stanley, C.R., Thayne, I.G., and Cumming, D.R.S. (2007) A planar Gunn diode operating above 100 GHz. IEEE Electron Device Letters, 28(10), pp. 849-851. (doi:10.1109/LED.2007.904218)

Khalid, A.H., Dunn, G.M., Pilgrim, N., Stanley, C.R., Thayne, I.G., Holland, M., and Cumming, D.R.S. (2007) Planar Gunn-type triode oscillator at 83 GHz. Electronics Letters, 43(15), pp. 837-838. (doi:10.1049/el:20071099)

2006

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman Vision - Seeing with Terahertz. In: Royal Society Summer Science Exhibition, Glasgow,UK,

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman Vision- Seeing with Terahertz. In: Royal Society Summer Science Exhibition, Glasgow, UK,

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman vision. In: Science Day, Buckingham Palace, London, UK,

2002

JK Microtechnology Limited (2002) Bung for securing flexible tubes. .

2001

JK Microtechnology Limited (2001) Reduced radiation audio headset. .

JK Microtechnology Limted (2001) Transparent electric convection heater. .

JK Microtechnology Ltd (2001) High conductivity indium-tin-oxide films. .

Rezazadeh, A.A., Khalid, A.H., and Sotoodeh, M. (2001) Reliability investigation of implanted microwave InGaP/GaAs HBTs. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 80(1-3), pp. 274-278. (doi:10.1016/S0921-5107(00)00654-1)

2000

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (2000) Empirical low-field mobility model for III-V compounds applicable in device simulation codes. Journal of Applied Physics, 87(6), pp. 2890-2900. (doi:10.1063/1.372274)

Sotoodeh, M., Sozzi, L., Vinay, A., Khalid, A.H., and Menozzi, R. (2000) Stepping toward standard methods of small-signal parameter extraction for HBT's. IEEE Transactions on Electron Devices, 47(6), pp. 1139-1151.

1999

Rezazadeh, A.A., Bashar, S.A., Sheng, H., Amin, F.A., Khalid, A.H., Sotoodeh, M., Fantini, F., and Liou, J.J. (1999) Reliability investigation of InGaP/GaAs HBTs under current and temperature stress. Microelectronics Reliability, 39(12), pp. 1809-1816. (doi:10.1016/S0026-2714(99)00189-4)

Sotoodeh, M., Khalid, A.H., Sheng, H., Amin, F.A., Gokdemir, T., Rezazadeh, A.A., Knights, A.P., and Button, C.C. (1999) Direct extraction and numerical simulation of the base and collector delay times in double heterojunction bipolar transistors. IEEE Transactions on Electron Devices, 46(6), pp. 1081-1086. (doi:10.1109/16.766867 )

1998

Budimir, D., Robertson, I.D., Khalid, A.H., and Rezazadeh, A.A. (1998) CPW low-pass filters on silicon substrate for multilayer MMICs. Microwave and Optical Technology Letters, 17(2), pp. 125-128.

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (1998) DC characterisation of HBTs using the observed kink effect on the base current. Solid-State Electronics, 42(4), pp. 531-539. (doi:10.1016/S0038-1101(97)00214-1)

1997

Budimir, D., Robertson, I.D., Khalid, A.H., and Rezazadeh, A.A. (1997) Multilayer CPW lowpass filters on GaAs/Si MMICs. In: 1997 Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications, 1997. EDMO. IEEE, pp. 315-320. ISBN 078034135X (doi:10.1109/EDMO.1997.668625 )

Gokdemir, T., Economides, S.B., Khalid, A., Rezazadeh, A.A., and Robertson, I.D. (1997) Design and performance of GaAs MMIC CPW baluns using overlaid and spiral couplers. In: IEEE MTT-S International Microwave Symposium, Denver, 8-13 June 1997, pp. 401-404.

Gokdemir, T., Karacaoglu, U., Budimir, D., Economides, S.B., Khalid, A., Rezazadeh, A.A., and Robertson, I.D. (1997) Multilayer passive components for uniplanar Si/SiGe MMICs. In: IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Denver, CO, 8-11 June 1997, pp. 233-236. (doi:10.1109/RFIC.1997.598795)

Khalid, A.H., Sotoodeh, M., and Rezazadeh, A.A. (1997) Planar self-aligned microwave InGaP/GaAs HBTs using He+/O+ implant isolation. In: Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications (EDMO), London, UK, 24-25 Nov 1997, pp. 279-284. (doi:10.1109/EDMO.1997.668618)

Sanchez-Hernandez, D., Karacaoglu, U., Gokdemir, T., Khalid, A.H., Rezazadeh, A.A., Ferrando, M., de los Reyes, E., and Robertson, I.D. (1997) CAD techniques for the electromagnetic design of monolithic millimetre-wave integrated circuits. Annales des Télécommunications , 52(3-4), pp. 164-173.

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (1997) Numerical modelling of AlGaAs/GaAs and InGaP/GaAs single and double HBTs. In: Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications (EDMO), London, UK, 24-25 Nov 1997, pp. 223-228. (doi:10.1109/EDMO.1997.668603)

1996

Khalid, A.H., and Rezazadeh, A.A. (1996) Fabrication and characterisation of transparent-gate field effect transistors using indium tin oxide. IEE Proceedings: Optoelectronics, 143(1), pp. 7-11. (doi:10.1049/ip-opt:19960083)

Boroumand, F.A., Khalid, A.H., Hopkinson, M., Swanson, J.G., and Fontaine, C. (1996) Observations of low frequency admittance between isolated GaAs structures formed by ion implantation and by epitaxy on epitaxial buffer layers prepared at high and low temperatures. In: Semiconducting and Insulating Materials 1996: Proceedings of the 9th Conference on Semiconducting and Insulating Materials (SIMC'9), 29 April - 3 May 1996, Toulouse, France. IEEE: New York, USA, pp. 51-54. ISBN 9780780331792 (doi:10.1109/SIM.1996.570876)

1992

Chohan, M.H., Khalid, A.H., Zulfiqar, M., Butt, P.K., Khan, F., and Hussain, R. (1992) Synthesis and electrical resistivity of nickel polymethacrylate. Modern Physics Letters B, 6(10), pp. 581-586. (doi:10.1142/S0217984992000661)

1991

Chohan, M.H., Khalid, A.H., Zulfiqar, M., Butt, P.K., Khan, F., and Hussain, R. (1991) Electron transport mechanism in cobalt polymethacrylate (CoPMA). Modern Physics Letters B, 5(29), pp. 1933-1938. (doi:10.1142/S021798499100232X)

Khalid, A. (1991) Electrical measurements on Conductive polymers. In: 5th National Conference on Solid-State Physics, Lahore, Pakistan, 26-29 Oct 1991,

This list was generated on Tue Jun 30 09:13:40 2015 BST.
Number of items: 98.

Articles

Maricar, M. I. , Khalid, A., Cumming, D. S. R., and Oxley, C. H. (2015) Improving the quality factor of the coplanar waveguide resonator. Microwave and Optical Technology Letters, 57(6), pp. 1323-1325. (doi:10.1002/mop.29082)

Glover, J., Khalid, A., Stephen, A., Dunn, G., Cumming, D., and Oxley, C. H. (2015) Micro-coolers fabricated as a component in an integrated circuit. Semiconductor Science and Technology, 30(1), 015005. (doi:10.1088/0268-1242/30/1/015005)

Maricar, M. I., Khalid, A., Dunn, G., Cumming, D., and Oxley, C.H. (2015) Experimentally estimated dead space for GaAs and InP based planar Gunn diodes. Semiconductor Science and Technology, 30(1), 012001. (doi:10.1088/0268-1242/30/1/012001)

Papageorgiou, V., Khalid, A., Li, C., Steer, M. J., and Cumming, D. R.S. (2014) Integration techniques of pHEMTs and planar Gunn diodes on GaAs substrates. Solid-State Electronics, 102, pp. 87-92. (doi:10.1016/j.sse.2014.06.006)

Glover, J., Khalid, A., Cumming, D.R.S., Montes Bajo, M. , Kuball, M., Stephen, A., Dunn, G.M., and Oxley, C.H. (2014) On wafer thermal characterization of miniature gallium arsenide microcoolers with thermal loading from DC probes. Microwave and Optical Technology Letters, 56(11), pp. 2699-2700. (doi:10.1002/mop.28681)

Maricar, M. I., Glover, J., Khalid, A., Li, C., Evans, G., Cumming, D. S.R., and Oxley, C. H. (2014) An AlGaAs/GaAs-based planar Gunn diode oscillator with a fundamental frequency operation of 120 GHz. Microwave and Optical Technology Letters, 56(10), pp. 2449-2451. (doi:10.1002/mop.28606)

Maricar, M. I. , Khalid, A., Glover, J., Evans, G.A., Vasileious, P., Li, C., Cumming, D., and Oxley, C.H. (2014) Extraction of second harmonic from the In0.57Ga0.47As planar Gunn diode using radial stub resonators. Solid-State Electronics, 99, pp. 38-40. (doi:10.1016/j.sse.2014.05.011)

Papageorgiou, V., Khalid, A.-u.-H., Li, C., and Cumming, D. R.S. (2014) Co-fabrication of planar Gunn diode and HEMT on InP substrate. IEEE Transactions on Electron Devices, 61(8), pp. 2779-2784. (doi:10.1109/TED.2014.2331368)

Maricar, M. I., Glover, J., Evans, G., Khalid, A.-u.-H., Cumming, D., and Oxley, C. (2014) Design and characterization of a novel diamond resonator. Microwave and Optical Technology Letters, 56(7), pp. 1691-1693. (doi:10.1002/mop.28418)

Khalid, A. et al. (2014) Terahertz oscillations in an In0.53Ga0.47As submicron planar gunn diode. Journal of Applied Physics, 115(11), p. 114502. (doi:10.1063/1.4868705)

Stephen, A., Dunn, G.M., Glover, J., Oxley, C. H., Montes Bajo, M., Cumming, D.R.S., Khalid, A., and Kuball, M. (2014) Micro-cooler enhancements by barrier interface analysis. AIP Advances, 4(2), 027105. (doi:10.1063/1.4865251)

Li, C., Lok, L.B., Khalid, A., Papageorgiou, V., Grant, J., and Cumming, D.R.S. (2013) Millimeter-wave coplanar stripline power dividers. International Journal of Microwave and Wireless Technologies, 5(3), pp. 205-212. (doi:10.1017/S1759078713000421)

Montes Bajo, M., Dunn, G., Stephen, A., Khalid, A., Cumming, D.R.S., Oxley, C.H., Glover, J., and Kuball, M. (2013) Impact ionisation electroluminescence in planar GaAs-based heterostructure gunn diodes: spatial distribution and impact of doping non-uniformities. Journal of Applied Physics, 113(12), Art. 124505. (doi:10.1063/1.4798270 )

Khalid, A.-u.-H., Li, C., Papageorgiou, V., Pilgrim, N.J., Dunn, G.M., and Cumming, D. (2013) A 218-GHz second-harmonic multiquantum well GaAs-based planar Gunn diodes. Microwave and Optical Technology Letters, 55(3), pp. 686-688. (doi:10.1002/mop.27393)

Khalid, A. et al. (2013) In0.53Ga0.47As planar Gunn diodes operating at a fundamental frequency of 164 GHz. IEEE Electron Device Letters, 34(1), pp. 39-41. (doi:10.1109/LED.2012.2224841)

Stephen, A., Dunn, G.M., Oxley, C.H., Glover, J., Montes Bajo, M., Cumming, D.R.S., Khalid, A., and Kuball, M. (2013) Improvements in thermionic cooling through engineering of the heterostructure interface using Monte Carlo simulations. Journal of Applied Physics, 114(4), 043717. (doi:10.1063/1.4817087)

Li, C., Khalid, A., Papageorgiou, V., Lok, L.B., and Cumming, D.R.S. (2012) A wideband CPW ring power combiner with low insertion loss and high port isolation. IEEE Microwave and Wireless Components Letters, 22(11), pp. 580-582. (doi:10.1109/LMWC.2012.2224854)

Khalid, A., Li, C., Grant, J., Saha, S., Ferguson, S., and Cumming, D. (2012) Simple e-beam air-bridge technology for mm-wave applications. Microelectronic Engineering, 98, pp. 262-265. (doi:10.1016/j.mee.2012.06.006)

Saha, S.C., Grant, J.P., Khalid, A., and Cumming, D. (2012) Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating. Journal of Biomedical Optics, 17, 067006. (doi:10.1117/1.JBO.17.6.067006)

Montes, M., Dunn, G., Stephen, A., Khalid, A., Li, C., Cumming, D., Oxley, C.H., Hopper, R.H., and Kuball, M. (2012) Reduction of impact ionization in GaAs-based planar gunn diodes by anode contact design. IEEE Transactions on Electron Devices, 59(3), pp. 654-660. (doi:10.1109/TED.2011.2177094)

Saha, S., Grant, J., Khalid, A., and Cumming, D. (2012) Terahertz frequency-domain spectroscopy method for vector characterization of liquid using an artificial dielectric. IEEE Transactions on Terahertz Science and Technology, 2(1), pp. 113-122. (doi:10.1109/TTHZ.2011.2177172)

Li, C., Khalid, A., Caldwell, S.H.P., Holland, M., Dunn, G.M., Thayne, I.G., and Cumming, D.R.S. (2011) Design, fabrication and characterization of In0.23Ga0.77As-channel planar Gunn diodes for millimeter wave applications. Solid-State Electronics, 64(1), pp. 67-72. (doi:10.1016/j.sse.2011.07.008)

Li, C., Lok, L.B., Khalid, A., Thayne, I.G., and Cumming, D.R.S. (2011) Investigation of loading effect on power performance for Planar Gunn diodes using load-pull measurement technique. IEEE Microwave and Wireless Components Letters, 21(10), pp. 556-558. (doi:10.1109/LMWC.2011.2163496)

Li, C., Khalid, A., Caldwell, S.H.P., Pilgrim, N.J., Holland, M.C., Dunn, G.M., and Cumming, D.R.S. (2011) Enhancement of power and frequency in Planar Gunn diodes by introducing extra delta-doping layers. Microwave and Optical Technology Letters, 53(7), pp. 1624-1626. (doi:10.1002/mop.26071)

Grant, J., Ma, J., Saha, S., Lok, L.B., Khalid, A., and Cumming, D.R.S. (2011) Polarization insensitive terahertz metamaterial absorber. Optics Letters, 36(8), pp. 1524-1526. (doi:10.1364/OL.36.001524)

Ma, Y., Chen, Q., Grant, J., Saha, S.C., Khalid, A., and Cumming, D.R.S. (2011) A terahertz polarization insensitive dual band metamaterial absorber. Optics Letters, 36(6), pp. 945-947. (doi:10.1364/OL.36.000945)

Khalid, A., Li, C., Holland, M.C., Gunn, D.M., and Cumming, D.R.S. (2011) Novel composite contact design and fabrication for planar Gunn devices for millimeter-wave and terahertz frequencies. Physica Status Solidi C, 8(2), pp. 316-318. (doi:10.1002/pssc.201000529)

Pilgrim, N.J., Khalid, A., Li, C., Dunn, G.M., and Cumming, D.R.S. (2011) Contact shaping in planar Gunn diodes. Physica Status Solidi C, 8(2), pp. 313-315. (doi:10.1002/pssc.201000539)

Li, C., Lok, L.B., Khalid, A., and Cumming, D.R.S. (2011) Coplanar ring divider with wideband high isolation performance. Progress in Electromagnetics Research Letters, 25, pp. 1-10.

Saha, S., Ma, Y., Grant, J., Khalid, A., and Cumming, D. (2010) Imprinted quarter wave plate at terahertz frequency. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 28(6), C6M83-C6M87. (doi:10.1116/1.3497023)

Khalid, A., Li, C., and Cumming, D. (2010) Vertical scaling of multi-stack Planar Gunn diodes. 2010 International Semiconductor Conference (CAS), 2, pp. 427-430. (doi:10.1109/SMICND.2010.5650562)

Ma, Y., Chen, Q., Khalid, A.H., Saha, S.C., and Cumming, D. R. S. (2010) Terahertz dual-band resonator on silicon. Optics Letters, 35(4), pp. 469-471. (doi:10.1364/OL.35.000469)

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Imprinted terahertz artificial dielectric quarter wave plates. Optics Express, 18(12), pp. 12168-12175. (doi:10.1364/OE.18.012168)

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Low-loss terahertz artificial dielectric birefringent quarter-wave plates. IEEE Photonics Technology Letters, 22(2), pp. 79-81. (doi:10.1109/LPT.2009.2036242 )

Li, C., Khalid, A., Pilgrim, N., Holland, M.C., Dunn, G., and Cumming, D.R.S. (2009) Novel planar Gunn diode operating in fundamental mode up to 158 GHz. Journal of Physics: Conference Series, 193(1), 012029. (doi:10.1088/1742-6596/193/1/012029)

Ma, Y., Khalid, A., Drysdale, T.D., and Cumming, D.R.S. (2009) Direct fabrication of terahertz optical devices on low-absorption polymer substrates. Optics Letters, 34(10), pp. 1555-1557. (doi:10.1364/OL.34.001555)

Pilgrim, N.J., Macpherson, R.F., Khalid, A., Dunn, G.M., and Cumming, D.R.S. (2009) Multiple and broad frequency response Gunn diodes. Semiconductor Science and Technology, 24(10), (doi:10.1088/0268-1242/24/10/105010 )

Shi, X.H., Cleary, A., Khalid, A., and Cumming, D.R.S. (2009) Multiple plasmon resonances at terahertz frequencies from arrays of arsenic doped silicon dots. Microelectronic Engineering, 86(4-6), pp. 1111-1113. (doi:10.1016/j.mee.2008.12.070)

Pilgrim, N.J., Khalid, A., Dunn, G.M., and Cumming, D.R.S. (2008) Gunn oscillations in planar heterostructure diodes. Semiconductor Science and Technology, 23(7), 075013. (doi:10.1088/0268-1242/23/7/075013 )

Khalid, A.H., Pilgrim, N.J., Dunn, G.M., Holland, M.C., Stanley, C.R., Thayne, I.G., and Cumming, D.R.S. (2007) A planar Gunn diode operating above 100 GHz. IEEE Electron Device Letters, 28(10), pp. 849-851. (doi:10.1109/LED.2007.904218)

Khalid, A.H., Dunn, G.M., Pilgrim, N., Stanley, C.R., Thayne, I.G., Holland, M., and Cumming, D.R.S. (2007) Planar Gunn-type triode oscillator at 83 GHz. Electronics Letters, 43(15), pp. 837-838. (doi:10.1049/el:20071099)

Rezazadeh, A.A., Khalid, A.H., and Sotoodeh, M. (2001) Reliability investigation of implanted microwave InGaP/GaAs HBTs. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 80(1-3), pp. 274-278. (doi:10.1016/S0921-5107(00)00654-1)

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (2000) Empirical low-field mobility model for III-V compounds applicable in device simulation codes. Journal of Applied Physics, 87(6), pp. 2890-2900. (doi:10.1063/1.372274)

Sotoodeh, M., Sozzi, L., Vinay, A., Khalid, A.H., and Menozzi, R. (2000) Stepping toward standard methods of small-signal parameter extraction for HBT's. IEEE Transactions on Electron Devices, 47(6), pp. 1139-1151.

Rezazadeh, A.A., Bashar, S.A., Sheng, H., Amin, F.A., Khalid, A.H., Sotoodeh, M., Fantini, F., and Liou, J.J. (1999) Reliability investigation of InGaP/GaAs HBTs under current and temperature stress. Microelectronics Reliability, 39(12), pp. 1809-1816. (doi:10.1016/S0026-2714(99)00189-4)

Sotoodeh, M., Khalid, A.H., Sheng, H., Amin, F.A., Gokdemir, T., Rezazadeh, A.A., Knights, A.P., and Button, C.C. (1999) Direct extraction and numerical simulation of the base and collector delay times in double heterojunction bipolar transistors. IEEE Transactions on Electron Devices, 46(6), pp. 1081-1086. (doi:10.1109/16.766867 )

Budimir, D., Robertson, I.D., Khalid, A.H., and Rezazadeh, A.A. (1998) CPW low-pass filters on silicon substrate for multilayer MMICs. Microwave and Optical Technology Letters, 17(2), pp. 125-128.

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (1998) DC characterisation of HBTs using the observed kink effect on the base current. Solid-State Electronics, 42(4), pp. 531-539. (doi:10.1016/S0038-1101(97)00214-1)

Sanchez-Hernandez, D., Karacaoglu, U., Gokdemir, T., Khalid, A.H., Rezazadeh, A.A., Ferrando, M., de los Reyes, E., and Robertson, I.D. (1997) CAD techniques for the electromagnetic design of monolithic millimetre-wave integrated circuits. Annales des Télécommunications , 52(3-4), pp. 164-173.

Khalid, A.H., and Rezazadeh, A.A. (1996) Fabrication and characterisation of transparent-gate field effect transistors using indium tin oxide. IEE Proceedings: Optoelectronics, 143(1), pp. 7-11. (doi:10.1049/ip-opt:19960083)

Chohan, M.H., Khalid, A.H., Zulfiqar, M., Butt, P.K., Khan, F., and Hussain, R. (1992) Synthesis and electrical resistivity of nickel polymethacrylate. Modern Physics Letters B, 6(10), pp. 581-586. (doi:10.1142/S0217984992000661)

Chohan, M.H., Khalid, A.H., Zulfiqar, M., Butt, P.K., Khan, F., and Hussain, R. (1991) Electron transport mechanism in cobalt polymethacrylate (CoPMA). Modern Physics Letters B, 5(29), pp. 1933-1938. (doi:10.1142/S021798499100232X)

Book Sections

Li, C., Lok, L.B., Khalid, A., Papageorgiou, V., Grant, J., and Cumming, D. (2013) A coplanar ring power divider with high isolation for V-band and W-band applications. In: 42nd European Microwave Conference (EuMC), Amsterdam, The Netherlands, 29 Oct- 01 Nov 2012. IEEE: New York, NY, USA, pp. 57-60. ISBN 9781467322157

Li, C., Lok, L.B., Khalid, A., and Cumming, D. (2011) A broadband circular combiner/divider for planar Gunn oscillators. In: 2nd Annual Passive RF and Microwave Components Seminar. The Institution of Engineering and Technology, pp. 15-20. ISBN  9781849193221 (doi:10.1049/ic.2011.0196)

Khalid, A., Li, C., Dunn, G., Pilgrim, N., and Cumming, D.R.S. (2009) Observation of multiple domains in a planar Gunn diode. In: EuMC 2009: European Microwave Conference: 28 September - 2 October 2009, Rome, Italy. IEEE Computer Society: Piscataway, N.J., USA, pp. 298-300. ISBN 9781424447497

Budimir, D., Robertson, I.D., Khalid, A.H., and Rezazadeh, A.A. (1997) Multilayer CPW lowpass filters on GaAs/Si MMICs. In: 1997 Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications, 1997. EDMO. IEEE, pp. 315-320. ISBN 078034135X (doi:10.1109/EDMO.1997.668625 )

Boroumand, F.A., Khalid, A.H., Hopkinson, M., Swanson, J.G., and Fontaine, C. (1996) Observations of low frequency admittance between isolated GaAs structures formed by ion implantation and by epitaxy on epitaxial buffer layers prepared at high and low temperatures. In: Semiconducting and Insulating Materials 1996: Proceedings of the 9th Conference on Semiconducting and Insulating Materials (SIMC'9), 29 April - 3 May 1996, Toulouse, France. IEEE: New York, USA, pp. 51-54. ISBN 9780780331792 (doi:10.1109/SIM.1996.570876)

Conference Proceedings

Al-Khalidi, A., Gallacher, K., Khalid, A., Paul, D., and Wasige, E. (2014) 0.25 Ω-mm Ohmic contacts to AlN/GaN HEMT structure with in-situ SiN passivation. In: 7th Wide Band Gap Semiconductors and Components Workshop, Frascati, Italy, 11-12 Sep 2014,

Al-Khalidi, A., Khalid, A., and Wasige, E. (2014) Comparison of AlGaN/GaN HEMTs on Silicon, Sapphire and SiC substrates- a thermal perspective. In: Compound Semiconductor Week 2014, Montpellier, France, 11–15 May 2014,

Alharbi, K.H., Ofiare, A., Wang, J., Khalid, A., Cumming, D., and Wasige, E. (2014) Radiation pattern characterisation setup for G-band planar yagi antennas. In: 2nd Annual Active and Passive RF Devices Seminar, Birmingham, UK, 29 Oct 2014,

Faramehr, S., Al-Khalidi, A., Khalid, A., Wasige, E., Igić, P., and Kalna, K. (2014) Device simulation and optimization of i-GaN capped AlGaN/AlN/GaN HEMT. In: UK Semiconductors 2014, Sheffield, UK, 9-10 Jul 2014,

Khalid, A., Thoms, S., Macintyre, D., Thayne, I.G., and Cumming, D.R.S. (2014) Fabrication of submicron planar Gunn diode. In: 26th International Conference on Indium Phosphide and Related Materials, Montpelier, France, 11-15 May 2014, (doi:http://dx.doi.org/10.1109/ICIPRM.2014.6880542)

Khalid, A., Wang, J., Ofiare, A., Alharbi , K., Cumming, D., and Wasige, E. (2014) Resonant tunneling and planar Gunn diodes: a comparison of two solid state sources for terahertz technology. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Ofiare, A., Alharbi, K. , Khalid, A., Wang, J., Cumming, D., and Wasige, E. (2014) Wideband planar Yagi antennas for millimetre wave frequency applications. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Wang, J., Alharbi , K., Ofiare, A., Khalid, A., Wang, L., Cumming, D., and Wasige, E. (2014) Series coupled resonant tunneling diode oscillators for terahertz applications. In: UCMMT 2014: 7 th European/UK-China Workshop on Millimeter Waves and Terahertz Technologies, Chengdu, China, 2–4 September 2014, (Unpublished)

Wang, J., Wang, L., Li, C., Alharbi, K., Khalid, A., and Wasige, E. (2014) W-band InP-based resonant tunnelling diode oscillator with milliwatt output power. In: 26th International Conference on Indium Phosphide and Related Materials, Montpelier, France, 11-15 May 2014, pp. 1-2. (doi:10.1109/ICIPRM.2014.6880531)

Ismaeel Maricar, M. et al. (2013) Planar gunn diode characterisation and resonators elements to realise oscillator circuits. In: International Conference on Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET-2013), Chennai, India, 24-26 Jul 2013, pp. 597-601. (doi:10.1109/ICANMEET.2013.6609384)

Glover, J., Oxley, C.H., Khalid, A., Cumming, D.R.S., Montes, M., Kuball, M., and Dunn, G.M. (2013) Novel thermal management of power electronic devices: high power high frequency planar gunn diodes. In: EPSRC Centre for Power Electronics – Launch Event, Nottingham, UK, 1 Jul 2013, (Unpublished)

Khalid, A., Li, C., Dunn, G.M., and Cumming, D.R.S. (2013) Multi-channel GaAs-based planar gunn diodes. In: 40th International Symposium on Compound Semiconductors, Kobe, Japan, 19-23 May 2013,

Khalid, A.-u.-H., Glover, J., Hopper, R., Papageorgiou, V., Montes, M., Kuball, M., Dunn, G., Stephen, A., Oxley, C., and Cumming, D.R.S. (2013) Fabrication of integrated planar gunn diode and micro-cooler on GaAs substrate. In: 40th International Symposium on Compound Semiconductors, Kobe, Japan, 19-23 May 2013,

Papageorgiou, V., Khalid, A., Li, C., Dunn, G. M., and Cumming, D. R. S. (2013) The development of planar Gunn diodes for the realisation of MMIC oscillators. In: IET 1st Annual Active and Passive RF Devices Seminar, Glasgow, UK, 29 Oct. 2013, pp. 55-58. (doi:10.1049/ic.2013.0248)

Papageorgiou, V., Khalid, A., Steer, M. J., Li, C., and Cumming, D. R. S. (2013) Monolithic Implementation of a Planar Gunn Diode and a pHEMT. In: HETECH 2013: 22nd European Workshop on Heterostructure Technology, Glasgow, UK, 9-11 Sept. 2013, (Unpublished)

Papageorgiou, V., Khalid, A., Steer, M. J., Li, C., and Cumming, D. R. S. (2013) Monolithic fabrication of a planar Gunn diode and a pHEMT side-by-side. In: ESSDERC/ESSCIRC 2013: 2013 European Solid-State Device Research and 2013 European Solid-State Circuits Conference, Bucharest, Romania, 16-20 Sept. 2013, pp. 111-114. (doi:10.1109/ESSDERC.2013.6818831)

Papageorgiou, V., Khalid, A.H., Li, C., and Cumming, D. (2013) Simulation and fabrication of InGaAs planar Gunn diode on InP substrate. In: 2013 International Conference on Indium Phosphide and Related Materials (IPRM), Kobe, Japan, 19-23 May 2013,

Papageorgiou, V., Khalid, A., and Cumming, D. R.S. (2013) One-step air bridge fabrication technique using 3D e-beam lithography. In: MNE2013: 39th International Conference on Micro and Nano Engineering, London, UK, 16-19 Sept. 2013,

Li, C., Khalid, A., Lok, L.B., and Cumming, D. (2011) Novel on-wafer measurement technique for passive multiport devices in millimeter wave frequency range. In: 9th Millimeter-Wave User Group Meeting, Glasgow, UK, 31 March 2011, (Unpublished)

Khalid, A., Li, C., Grant, J., Saha, S., Ferguson, S., and Cumming, D. (2011) A simple air bridge technology for mm-wave applications. In: 37th International Conference on Micro and Nano Engineering: MNE 2011, Berlin, 19 - 23 September 2011,

Li, C., Khalid, A., Lok, L., and Cumming, D. (2010) Low power signal detection in emerging transferred electron devices using vector network analyser above 100 GHz. In: 8th NPL Millimeter-wave Users's Group Meeting, London, UK, 1 Oct 2010,

Li, C., Khalid, A., Lok, L.B., Holland, M., and Cumming, D. (2010) Millimeter-wave planar Gunn diodes. In: UK Semiconductors 2010, Sheffield, UK, 7-8 Jul 2010, (Unpublished)

Li, C., Khalid, A., Lok, L.B., Pilgrim, N.J., Holland, M., Dunn, G.M., and Cumming, D. (2010) An In0.23Ga0.77As-based pHEMT-like Planar Gunn Diode Operating at 116 GHz. In: 35th International Conference on Infrared, Millimeter and Terhertz Waves, Rome, Italy, 5 -10 September 2010,

Li, C., Khalid, A., Lok, L.B., Pilgrim, N.J., Holland, M., Dunn, G.M., and Cumming, D. (2010) An In0.23Ga0.77As-based pHEMT-like Planar Gunn Diode Operating at 116 GHz. In: 35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy, 5 - 10 September 2010,

Lok, L.B., Li, C., Khalid, A., Pilgrim, N.J., Dunn, G.M., and Cumming, D. (2010) Demonstration of the Self-Mixing Effect with a Planar Gunn Diode at Millimeter-Wave Frequency. In: 35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy, 5 -10 September 2010,

Ma, Y., Khalid, A., Saha, S.C., Grant, J.P., and Cumming, D.R.S. (2010) THz band pass filter on plastic substrates and its application on biological sensing. In: IEEE Photonics Society Winter Topicals Meeting Series, Majorca, Spain, Jan 11-13, 2010, pp. 50-51.

Saha, S.C., Ma, Y., Grant, J.P., Khalid, A., and Cumming, D.R.S. (2010) Fabrication of Silicon Quarter Wave Plate at Terahertz Frequency. In: IEEE Photonics Society Winter Topicals Meeting Series, Majorca, Spain, Jan 11-13, 2010, pp. 38-39.

Khalid, A., Holland, M.C., Stanley, C.R., Thayne, I.G., Cumming, D.S.R., Pilgrim, N., and Dunn, G. (2009) Gunn oscillations in planar heterostructure devices. In: 4th Annual EMRS DTC Technical Conference , Edinburgh, UK, 7-8 Jul 2009,

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman Vision - Seeing with Terahertz. In: Royal Society Summer Science Exhibition, Glasgow,UK,

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman Vision- Seeing with Terahertz. In: Royal Society Summer Science Exhibition, Glasgow, UK,

Drysdale, T., Khalid, A., Sheridan, A., Walsby, E., and Cumming, D. (2006) Superhuman vision. In: Science Day, Buckingham Palace, London, UK,

Gokdemir, T., Economides, S.B., Khalid, A., Rezazadeh, A.A., and Robertson, I.D. (1997) Design and performance of GaAs MMIC CPW baluns using overlaid and spiral couplers. In: IEEE MTT-S International Microwave Symposium, Denver, 8-13 June 1997, pp. 401-404.

Gokdemir, T., Karacaoglu, U., Budimir, D., Economides, S.B., Khalid, A., Rezazadeh, A.A., and Robertson, I.D. (1997) Multilayer passive components for uniplanar Si/SiGe MMICs. In: IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Denver, CO, 8-11 June 1997, pp. 233-236. (doi:10.1109/RFIC.1997.598795)

Khalid, A.H., Sotoodeh, M., and Rezazadeh, A.A. (1997) Planar self-aligned microwave InGaP/GaAs HBTs using He+/O+ implant isolation. In: Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications (EDMO), London, UK, 24-25 Nov 1997, pp. 279-284. (doi:10.1109/EDMO.1997.668618)

Sotoodeh, M., Khalid, A.H., and Rezazadeh, A.A. (1997) Numerical modelling of AlGaAs/GaAs and InGaP/GaAs single and double HBTs. In: Workshop on High Performance Electron Devices for Microwave and Optoelectronic Applications (EDMO), London, UK, 24-25 Nov 1997, pp. 223-228. (doi:10.1109/EDMO.1997.668603)

Khalid, A. (1991) Electrical measurements on Conductive polymers. In: 5th National Conference on Solid-State Physics, Lahore, Pakistan, 26-29 Oct 1991,

Patents

Aberdeen University - Research and Innovation; University Court of the University of Glasgow (2009) Semiconductor device for generating an oscillating voltage. .

JK Microtechnology Limited (2002) Bung for securing flexible tubes. .

JK Microtechnology Limited (2001) Reduced radiation audio headset. .

JK Microtechnology Limted (2001) Transparent electric convection heater. .

JK Microtechnology Ltd (2001) High conductivity indium-tin-oxide films. .

This list was generated on Tue Jun 30 09:13:40 2015 BST.