Dr Khalid Rajab

Research

Millimetrewave radar, Sensing for health & wellbeing, IoT sensors, Ambient sensing, Machine learning & AI

Publications

Publications of specific relevance to the Centre for Networks, Communications and Systems

2024

A Falls Risk Screening Tool Based on Millimetre-Wave Radar
Dogu E, Paredes J, Alomainy A, Jones J and Rajab K
Proceedings of the 10th International Conference on Information and Communication Technologies for Ageing Well and e-Health., 161-168.  

DOI 10.5220/0012618900003699

QMRO

06-05-2024

Spatial Calibration of Millimeter-Wave Radar for Close-Range Object Location
Paredes JA, Hansard M, Rajab KZ and Álvarez FJ
Ieee Sensors Journal, Institute of Electrical and Electronics Engineers (Ieee) vol. 24 (12), 19407-19416.  

DOI 10.1109/jsen.2024.3393030

QMRO

15-01-2024

2022

A Radar-Based Human Activity Recognition Using a Novel 3-D Point Cloud Classifier
Yu Z, Taha A, Taylor W, Zahid A, Rajab K, Heidari H, Imran MA and Abbasi QH
Ieee Sensors Journal, Institute of Electrical and Electronics Engineers (Ieee) vol. 22 (19), 18218-18227.  

DOI 10.1109/jsen.2022.3198395

01-01-2022

2021

Multi-target tracking and activity classification with millimeter-wave radar
Rajab KZ, Wu B, Alizadeh P and Alomainy A
Applied Physics Letters, Aip Publishing vol. 119 (3) 

DOI 10.1063/5.0055641

19-07-2021

A Gaussian Process model for UAV localization using millimetre wave radar
Paredes JA, Álvarez FJ, Hansard M and Rajab KZ
Expert Systems With Applications, Elsevier vol. 185 

DOI 10.1016/j.eswa.2021.115563

QMRO

16-07-2021

Drone Positioning From Combined mmWave Radar and Depth Camera Data
Paredes JA, Hansard M, Rajab KZ, Álvarez FJ and Aguilera T
CEUR Workshop Proceedings. vol. 3097 
01-01-2021

2019

Atrial Fibrillation Stratification Via Super-Resolution Analysis of Fibrillatory Waves
Mishra S, Rammohan S, Rajab KZ, Dhillon G, Lambiase P, Hunter R and Chew E
2019 Computing in Cardiology Conference (CinC). vol. 45 

DOI 10.22489/cinc.2019.353

30-12-2019

Noise figure of electromagnetic systems with parity and time-reversal symmetry
Farooq H, Rajab KZ and Hao Y
Optics Express vol. 27 (22), 31363-31375.  

DOI 10.1364/OE.27.031363

QMRO

28-10-2019

Atrial Fibrillation Stratification Via Super-Resolution Analysis of Fibrillatory Waves
Mishra S, Rammohan S, Rajab KZ, Dhillon G, Lambiase P, Hunter R and Chew E
Computing in Cardiology. vol. 2019-September 

DOI 10.23919/CinC49843.2019.9005797

01-09-2019

Noise Figure of a Unidirectional Cloaking Circuit Based on Parity-Time Symmetry
Farooq H, Nagarkoti DS, Rajab KZ and Hao Y
13th European Conference on Antennas and Propagation, EuCAP 2019. 
01-03-2019

2018

Design and characterisation of a screen-printed millimetre-wave flexible metasurface using copper ink for communication applications
FALADE OP, JILANI SFJ, RAJAB S, Ahmed AY, Wildsmith T, Reip P and ALOMAINY AHM
Flexible and Printed Electronics, Iop Publishing 

DOI 10.1088/2058-8585/aaf0eb

QMRO

24-11-2018

Ultrashort pulse synthesis for energy concentration control in nanostructures.
Aziz AK, Zhang L, Hao Y and Rajab KZ
Optics Express, Optica Publishing Group vol. 26 (19), 25188-25198.  

DOI 10.1364/oe.26.025188

QMRO

12-09-2018

High Sensitivity Inkjet-Printed Terahertz Metallic Hole Array Sensor
Aziz AK, Jilani SF, Alomainy A and Rajab KZ
12th European Conference on Antennas and Propagation (EuCAP 2018). 

DOI 10.1049/cp.2018.0499

01-01-2018

2017

FDTD Modeling of Nonlinear Phenomena in Wave Transmission through Graphene
Yang L, Tian J, Rajab KZ and Hao Y
Ieee Antennas and Wireless Propagation Letters 

DOI 10.1109/LAWP.2017.2777530

QMRO

09-12-2017

Optically reconfigurable unit cell for Ka‐band reflectarray antennas
Alizadeh P, Parini CG and Rajab KZ
Electronics Letters, Institution of Engineering and Technology (Iet) vol. 53 (23), 1526-1528.  

DOI 10.1049/el.2017.1866

QMRO

01-11-2017

High-Impedance Surface Loaded With Graphene Non-Foster Circuits for Low-Profile Antennas
Tian J, Nagarkoti DS, Rajab KZ and Hao Y
Ieee Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers (Ieee) vol. 16, 2655-2658.  

DOI 10.1109/lawp.2017.2740162

31-08-2017

Filter Diagonalisation Method for Music Signal Analysis: Frame-wise Vibrato Detection and Estimation
YANG L, Rajab SAYID-KHALID and Chew E
Journal of Mathematics and Music, Taylor &Amp; Francis: Stm, Behavioural Science and Public Health Titles 

DOI 10.1080/17459737.2016.1263897

QMRO

14-03-2017

Non-Foster Impedance Design Techniques for High Performance Small Antenna
Nagarkoti DS, Rajab KZ and Hao Y
2017 11th European Conference on Antennas and Propagation (EUCAP)., 2517-2518.  

DOI 10.23919/eucap.2017.7928519

01-03-2017

2016

Experimental demonstration of compact spoof localized surface plasmons.
Bao D, Rajab KZ, Jiang WX, Cheng Q, Liao Z and Cui TJ
Optics Letters, Optica Publishing Group vol. 41 (23), 5418-5421.  

DOI 10.1364/ol.41.005418

QMRO

16-11-2016

Broadband Matching of Nuclear Quadrupole Resonance Detector Using Non-Foster Circuits
Li W, Rajab KZ, Alhoefer K, Zupancic B and Barras J
2016 Loughborough Antennas & Propagation Conference (LAPC)., 1-5.  

DOI 10.1109/lapc.2016.7807589

QMRO

01-11-2016

A Ka-Band Reflectarray with Variable Amplitude Unit Cells
Alizadeh P, Parini C and Rajab KZ
2016 46th European Microwave Conference (EuMC)., 1295-1298.  

DOI 10.1109/eumc.2016.7824588

01-10-2016

AVA: A Graphical User Interface for Automatic Vibrato and Portamento Detection and Analysis
YANG L, Rajab SAYID-KHALID and Chew E
the 42nd International Computer Music Conference Utrecht, The Netherlands 12 Sep 2016 - 16 Sep 2016. 

QMRO

12-09-2016

AVA: An Interactive System for Visual and Quantitative Analyses of Vibrato and Portamento Performance Styles
YANG L, Rajab SAYID-KHALID and Chew E
the 17th International Society for Music Information Retrieval Conference New York City, USA 7 Aug 2016 - 11 Aug 2016. 

QMRO

07-08-2016

Graphene-based tunable non-foster circuit for VHF applications
Tian J, Nagarkoti DS, Rajab KZ and Hao Y
Aip Advances, Aip Publishing: Open Access Journals vol. 6 (6), 065202-065202.  

DOI 10.1063/1.4953354

QMRO

01-06-2016

Signal to Noise Ratio Improvement with Non-Foster Antenna Matching
Nagarkoti DS, Hao Y and Rajab KZ
2016 IEEE International Symposium on Antennas and Propagation (APSURSI)., 1301-1302.  

DOI 10.1109/aps.2016.7696358

01-06-2016

Radiation-Q Bound of a Small Non-Foster Antenna
Nagarkoti DS, Hao Y and Rajab KZ
2016 IEEE International Symposium on Antennas and Propagation (APSURSI)., 187-188.  

DOI 10.1109/aps.2016.7695802

01-06-2016

Wave propagation in reconfigurable broadband gain metamaterials at microwave frequencies
Fan Y, Nagarkoti DS, Rajab KZ, Hao Y, Zhang HC and Cui TJ
Journal of Applied Physics vol. 119 (19) 

DOI 10.1063/1.4949553

QMRO

19-05-2016

An Optically-Switched Frequency Reconfigurable Antenna for Cognitive Radio Applications
ANDY A, Alizadeh P, Rajab KZ, Kreouzis T and Donnan
10th European Conference on Antennas and Propagation (EuCAP) Davos,Switzerland 10 Apr 2016 - 15 Apr 2016. 

DOI 10.1109/EuCAP.2016.7481573

10-04-2016

A Reconfigurable Reflectarray Antenna in Ka-Band Using Optically Excited Silicon
Alizadeh P, Andy AS, Parini C and Rajab KZ
2016 10th European Conference on Antennas and Propagation (EuCAP)., 1-5.  

DOI 10.1109/eucap.2016.7481611

01-04-2016

Q-Bandwidth Enhancement of an Antenna Using Non-Foster Circuit Based on Negative Differential Resistance Devices
Nagarkoti DS, Hao Y and Rajab KZ
2016 10th European Conference on Antennas and Propagation (EuCAP)., 1-2.  

DOI 10.1109/eucap.2016.7481570

01-04-2016

2015

Design of Broadband Non-Foster Circuits Based on Resonant Tunneling Diodes
Nagarkoti DS, Hao Y, Steenson DP, Li L, Linfield EH and Rajab KZ
Ieee Antennas and Wireless Propagation Letters vol. 15, 1398-1401.  

DOI 10.1109/LAWP.2015.2510654

QMRO

22-12-2015

A Low-cost FMCW Radar Front End for Imaging at 24 GHz 33 GHz
Alizadeh P, Parini C and Rajab KZ
2015 Loughborough Antennas & Propagation Conference (LAPC)., 1-4.  

DOI 10.1109/lapc.2015.7366007

01-11-2015

Noise measurements of a non-Foster circuit for matching of a receiver antenna
Nagarkoti DS, Hao Y and Rajab KZ
2015 9th European Conference on Antennas and Propagation, EuCAP 2015. 
27-08-2015

Stability Analysis of Resonant Tunnelling Diode for Resistive Matching of an Electrically Small Antenna
Nagarkoti DS, Alizadeh P, Hao Y and Rajab KZ
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting., 1556-1557.  

DOI 10.1109/aps.2015.7305167

QMRO

01-07-2015

Logistic Modeling of Note Transitions
Yang L, Chew E and Rajab KZ
Lecture Notes in Computer Science. vol. 9110, 161-172.  

DOI 10.1007/978-3-319-20603-5_16

QMRO

01-01-2015

2014

Nanoplasmonics for Ultrafast Coherent Control of Optical Fields
Rajab K
 

DOI 10.21236/ada611573

01-05-2014

Design and Stability of Negative Impedance Circuits for Non-Foster Matching of a Monopole Antenna
Nagarkoti DS, Rajab KZ and Hao Y
The 8th European Conference on Antennas and Propagation (EuCAP 2014)., 2707-2709.  

DOI 10.1109/eucap.2014.6902383

01-04-2014

2013

Noise power in active broadband metamaterials
Fan Y, Rajab KZ and Hao Y
Ieee Antennas and Propagation Society, Ap-S International Symposium (Digest), 1178-1179.  

DOI 10.1109/APS.2013.6711249

01-12-2013

Vibrato Performance Style: A Case Study Comparing Erhu and Violin
YANG L, Chew E and Rajab SAYID-KHALID
the 10th International Conference on Computer Music Multidisciplinary Research Marseille, France 15 Oct 2013 - 18 Oct 2013. 

QMRO

15-10-2013

Recent Advances in Practical Metamaterial Engineering
Rajab KZ, Fan Y and Hao Y
Additional Conferences (Device Packaging Hitec Hiten & Cicmt), Imaps - International Microelectronics Assembly and Packaging Society vol. 2013 (CICMT), 000094-000098.  

DOI 10.4071/cicmt-wa15

01-09-2013

Noise analysis of broadband active metamaterials with non-Foster loads
Fan Y, Rajab KZ and Hao Y
Journal of Applied Physics vol. 113 (23) 

DOI 10.1063/1.4811437

01-01-2013

Noise figure of broadband active metamaterials
Fan Y, Rajab KZ and Hao Y
PROCEEDINGS OF 2013 URSI INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC THEORY (EMTS)., 597-599.  

DOI 10.34385/proc.30.23pm2a-02

01-01-2013

Quantitative Study of Two Experimental Demonstrations of a Carpet Cloak
Bao D, Mitchell-Thomas RC, Rajab KZ and Hao Y
Ieee Antennas and Wireless Propagation Letters vol. 12, 206-209.  

DOI 10.1109/LAWP.2013.2245294

01-01-2013

Recent advances in practical metamaterial engineering
Rajab KZ, Fan Y and Hao Y
9th IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2013., 94-98.  
01-01-2013

2012

Recent advances in practical metamaterial engineering
Rajab KZ, Munoz M, Fan Y, Bao D and Hao Y
Proceedings - IMAPS/ACerS 8th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2012., 113-116.  
01-12-2012

Recent Advances in Practical Metamaterial Engineering
Rajab KZ, Munoz M, Fan Y, Bao D and Hao Y
Additional Conferences (Device Packaging Hitec Hiten & Cicmt), Imaps - International Microelectronics Assembly and Packaging Society vol. 2012 (CICMT), 000113-000116.  

DOI 10.4071/cicmt-2012-tp23

01-09-2012

Electrically Small Half-Loop Antenna Design with Non-Foster Matching Networks
Fan Y, Raiab KZ, Munoz M and Hao Y
2012 6th European Conference on Antennas and Propagation (EUCAP)., 126-129.  

DOI 10.1109/eucap.2012.6206602

01-03-2012

Experimental Demonstration of Carpet Cloak Realized with BaTiO3-loaded Polyurethane Foam
Bao D, Rajab KZ, Tang W and Hao Y
2012 6th European Conference on Antennas and Propagation (EUCAP). vol. 1, 1716-1719.  

DOI 10.1109/eucap.2012.6206666

01-03-2012

Terahertz time-domain spectroscopy characterisation of vertically aligned carbon nanotube films
Katsounaros A, Mann M, Naftaly M, Rajab K, HAO Y and Milne WI
Carbon, Elsevier Ltd vol. 50 (3), 939-942.  

DOI 10.1016/j.carbon.2011.09.056

01-01-2012

Characterization of active metamaterials based on negative impedance converters
Rajab KZ, Fan YF and Hao Y
Journal of Optics vol. 14 (11) 

DOI 10.1088/2040-8978/14/11/114004

01-01-2012

2011

Microwave characterization of multi-walled carbon nanotube arrays
Katsounaros A, Rajab KZ, Hao Y, Mann M and Milne WI
European Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 41st European Microwave Conference, EuMC 2011., 53-56.  
01-12-2011

All-dielectric invisibility cloaks made of BaTiO3-loaded polyurethane foam
Bao D, Rajab KZ, Hao Y, Kallos E, Tang WX, Argyropoulos C, Piao YZ and Yang SF
New Journal of Physics, Iop Publishing vol. 13 

DOI 10.1088/1367-2630/13/10/103023

QMRO

19-10-2011

X-band Characterization of Multi-Walled Carbon Nanotube Films
Katsounaros A, Rajab KZ, Hao Y, Mann M and Milne WI
2011 International Conference on Electromagnetics in Advanced Applications., 516-519.  

DOI 10.1109/iceaa.2011.6046394

01-09-2011

Broadband extraordinary transmission device realized with dielectrics
Bao D, Rajab KZ, Tang W and Hao Y
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011., 2197-2200.  
01-07-2011

Microwave characterization of vertically aligned multiwalled carbon nanotube arrays
Katsounaros A, Rajab KZ, Hao Y, Mann M and Milne WI
Appl Phys Lett vol. 98 (20) 

DOI 10.1063/1.3592263

16-05-2011

Active Circuits for Improved Metamaterial Performance
Rajab KZ, Fan Y, Bao D, Rahman A and Hao Y
2011 International Workshop on Antenna Technology (iWAT). vol. 1, 8-9.  

DOI 10.1109/iwat.2011.5752373

01-03-2011

2010

Experimental demonstration of broadband transmission through subwavelength aperture
Bao D, Rajab KZ, Tang WX and Haob Y
Appl Phys Lett vol. 97 (13) 

DOI 10.1063/1.3495995

27-09-2010

Stability of active magnetoinductive metamaterials
Rajab KZ, Hao Y, Bao D, Parini CG, Vazquez J and Philippakis M
J Appl Phys vol. 108 (5) 

DOI 10.1063/1.3476464

01-09-2010

Broadband Active Magnetic Materials
Rajab KZ, Hao Y, Bao D, Parini C, Vazquez J, Philippakis M, Wilmot S and Pearson R
2010 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM. 

DOI 10.1109/APS.2010.5560897

01-01-2010

Refractive Index Evaluation of Multi-Walled Carbon Nanotube Arrays
Katsounaros A, Rajab KZ, Hou K, Mann M, Naftaly M, Collings N, Crossland WA and Hao Y
PROCEEDINGS OF THE FOURTH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION. 

DOI 10.1109/wcsp.2010.5633486

01-01-2010

2009

Dielectric Properties at Millimeter‐Wave and THz Bands
Rajab KZ, Dougherty JP and Lanagan MT
In Advanced Millimeter‐Wave Technologies, Wiley 49-69.  

DOI 10.1002/9780470742969.ch3

26-02-2009

2008

Crystal structure and microwave dielectric properties of alkaline-earth hafnates, AHfO(3) (A = Ba, Sr, Ca)
Feteira A, Sinclair DC, Rajab KZ and Lanagan MT
J Am Ceram Soc vol. 91 (3), 893-901.  

DOI 10.1111/j.1551-2916.2007.02134.x

01-03-2008

Broadband Dielectric Characterization of Aluminum Oxide (Al2O3)
Rajab KZ, Naftaly M, Linfield EH, Nino JC, Arenas D, Tanner D, Mittra R and Lanagan M
Journal of Microelectronics and Electronic Packaging, Imaps - International Microelectronics Assembly and Packaging Society vol. 5 (1), 2-7.  

DOI 10.4071/1551-4897-5.1.1

01-01-2008

Ceramic Dielectric Materials for Microwave Resonator Arrays
Lanagan MT, Rajab K, Kwon DK, Semouchkin G, Semouchkina E and Iwasaki M
2008 17TH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS., 249-250.  

DOI 10.1109/ISAF.2008.4693749

01-01-2008

2007

Broadband dielectric characterization of aluminum oxide (Al 2O3)
Rajab KZ, Naftaly M, Linfield EH, Nino JC, Arenas D, Tanner D, Mittra R and Lanagan M
International Microelectronics and Packaging Society - 3rd IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2007., 149-155.  
01-12-2007

Terahertz transmission through periodic arrays of dielectric and conducting spheres
Rajab KZ, Mittra R, Naftaly M, Linfield EH and Lanagan MT
2007 IEEE Antennas and Propagation Society International Symposium., 5547-5550.  

DOI 10.1109/aps.2007.4396805

01-06-2007

Size reduction of microstrip patch antennas with left-handed transmission line loading
Rajab KZ, Mittra R and Lanagan MT
Iet Microw Antenna P vol. 1 (1), 39-44.  

DOI 10.1049/ict-map:20050334

01-02-2007

Terahertz transmission through periodic arrays of dielectric and conducting sphere
Rajab KZ, Mittra R, Naftaly M, Linfield EH and Lanagan MT
2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12., 5062-5065.  
01-01-2007

2006

Dielectric characterization of dielectric ceramic materials using terahertz time-domain spectroscopy
Rajab KZ, Perini S, Dougherty J, Iwasaki M and Lanagan M
IMAPS/ACerS - 2nd International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2006., 297-301.  
01-12-2006

Phase verification of compact multilayered low temperature co-fired ceramic composite right-/left-handed transmission line
Rajab KZ, Mittra R and Lanagan M
Microw Opt Techn Let vol. 48 (9), 1792-1795.  

DOI 10.1002/mop.21809

01-09-2006

Symmetry matching of hybrid modes for dielectric metamaterials
Iwasaki M, Semouchkina EA, Semouchkin GB, Rajab KZ, Randall CA and Lanagan MT
Jpn J Appl Phys 1 vol. 45 (4A), 2835-2841.  

DOI 10.1143/JJAP.45.2835

01-04-2006

Size reduction of Microstrip Patch Antennas via Artificial Dielectric Loading
Bringuier J, Mittra R, Rajab K, Gonzalez JI and Lanagan MT
2006 IEEE Antennas and Propagation Society International Symposium., 1473-1476.  

DOI 10.1109/aps.2006.1710830

01-01-2006

Some novel techniques for size reduction of microstrip patch antennas
Mittra P, Bringuier J, Abdel-Mageed M, Rajab K and Gonzalez JI
2006 IEEE International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials (IWAT)., 156-159.  

DOI 10.1109/IWAT.2006.1608999

01-01-2006

2005

Characterization of dielectrics and conductors for ceramic microsystems at microwave frequency
Haney L, Lanagan M, Perini S, Rajab K and Semouchkina E
Proceedings - 2005 IMAPS/ACerS 1st International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2005., 296-299.  
01-12-2005

Integration concepts for the fabrication of LTCC structures
Baker A, Lanagan M, Randall C, Seniouchkina E, Semouchkin G, Rajab KZ, Mittra R, Eitel R, Rliee S, Geggier P and Fulir G
Proceedings - 2005 IMAPS/ACerS 1st International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies, CICMT 2005., 46-52.  
01-12-2005

Dielectric property measurement using a resonant nonradiative-dielectric waveguide structure
Rajab KZ, Fuh KF, Mittra R and Lanagan M
Ieee Microw Wirel Co vol. 15 (2), 104-106.  

DOI 10.1109/LMWC.2004.842845

01-02-2005

Integration concepts for the fabrication of LTCC structures
Baker A, Lanagan M, Randall C, Semouchkina E, Semouchkin G, Rajah KZ, Eitel R, Rajab KZ, Mittra R, Rhee S, Geggier P, Duschl C and Fuhr G
Int J Appl Ceram Tec vol. 2 (6), 514-520.  

DOI 10.1111/j.1744-7402.2005.02052.x

01-01-2005

Size Reduction of Microstrip Antennas using Metamaterials
Rajab KZ, Mittra R and Lanagan MT
2005 IEEE Antennas and Propagation Society International Symposium. vol. 2B, 296-299.  

DOI 10.1109/aps.2005.1552000

01-01-2005

Some novel techniques for size reduction of microstrip patch antennas
Mittra R, Bringuier J, Abdel-Mageed M, Rajab K and Gonzalez JI
2005 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS, VOLS 1-5., 2-4. Editors: Hong W, Cui TJ and Fang D. 

DOI 10.1109/APMC.2005.1606171

01-01-2005

Grants

Grants of specific relevance to the Centre for Networks, Communications and Systems

Smart sensors for a wearable-free and contactless virtual ward at home
Khalid Rajab, Akram Alomainy and Janelle Jones
£396,049 EPSRC Engineering and Physical Sciences Research Council
01-10-2022 - 25-07-2025