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Ubaid Ullah
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Antenna in LTCC technologies: A review and the current state of the art
U Ullah, N Mahyuddin, Z Arifin, MZ Abdullah, A Marzuki
IEEE Antennas and Propagation Magazine 57 (2), 241-260, 2015
522015
A Broadband Circularly Polarized Wide-Slot Antenna with a Miniaturized Footprint
U Ullah, S Koziel
IEEE Antennas and Wireless Propagation Letters, 2018
432018
Enhanced-Performance Circularly Polarized MIMO Antenna With Polarization/Pattern Diversity
U Ullah, IB Mabrouk, S Koziel
IEEE Access 8, 11887 - 11895, 2020
342020
A review of wideband circularly polarized dielectric resonator antennas
U Ullah, MF Ain, ZA Ahmad
China Communications 14 (6), 65-79, 2017
342017
Rapid redesign and bandwidth/size tradeoffs for compact wideband circular polarization antennas using inverse surrogates and fast EM-based parameter tuning
U Ullah, S Koziel, IB Mabrouk
IEEE Transactions on Antennas and Propagation 68 (1), 81-89, 2019
282019
A Compact Circularly Polarized Antenna With Directional Pattern for Wearable Off-Body Communications
U Ullah, IB Mabrouk, S Koziel
IEEE Antennas and Wireless Propagation Letters, 2019
262019
A Geometrically Simple Compact Wideband Circularly Polarized Antenna
U Ullah, S Koziel
IEEE Antennas and Wireless Propagation Letters, 2019
262019
Design of a novel dielectric resonator antenna using MgTiO3–CoTiO3 for wideband applications
U Ullah, WFFW Ali, MF Ain, NM Mahyuddin, ZA Ahmad
Materials & Design 85, 396-403, 2015
242015
Novel Coplanar-Strip-Based Excitation Technique for Design of Broadband Circularly Polarization Antennas with Wide 3-dB Axial Ratio Beamwidth
U Ullah, S Koziel
IEEE Transactions on Antennas and Propagation, 2019
182019
Design and optimization of a novel miniaturized low-profile circularly polarized wide-slot antenna
U Ullah, S Koziel
Journal of Electromagnetic Waves and Applications 32 (16), 2099-2109, 2018
182018
Circular polarization diversity implementation for correlation reduction in wideband low-cost multiple-input-multiple-output antenna
U Ullah, M Al-Hasan, S Koziel, IB Mabrouk
IEEE Access 8, 95585-95593, 2020
172020
An equivalent circuit of microstrip slot coupled rectangular dielectric resonator antenna
MF Ain, MY Qasaymeh, ZA Ahmad, MA Zakariya, U Ullah
172012
A series inclined slot-fed circularly polarized antenna for 5G 28 GHz applications
U Ullah, M Al-Hasan, S Koziel, IB Mabrouk
IEEE Antennas and Wireless Propagation Letters 20 (3), 351-355, 2021
122021
Implementation of spatial/polarization diversity for improved-performance circularly polarized multiple-input-multiple-output ultra-wideband antenna
U Ullah, IB Mabrouk, S Koziel, M Al-Hasan
IEEE Access 8, 64112-64119, 2020
122020
A low-profile hybrid multi-permittivity dielectric resonator antenna with perforated structure for Ku and K band applications
IA Zubir, M Othman, U Ullah, S Kamal, MF Ab Rahman, R Hussin, ...
IEEE Access 8, 151219-151228, 2020
112020
Bi-polarized dual-segment rectangular dielectric resonator antenna
MF Ain, U Ullah, ZA Ahmad
IETE Journal of Research 59 (6), 739-743, 2013
112013
A Simple-Topology Compact Broadband Circularly Polarized Antenna With Unidirectional Radiation Pattern
U Ullah, S Koziel, I Mabrouk
IEEE Antennas and Wireless Propagation Letters, 2019
102019
Microstrip patch antenna: A review and the current state of the art
ASB Mohammed, S Kamal, MF Ain, ZA Ahmad, U Ullah, M Othman, ...
Journal of Advanced Research in Dynamical and Control Systems 11 (7 (special …, 2019
102019
Mathematical Modelling on the Effects of Conductive Material and Substrate Thickness for Air Substrate Microstrip Patch Antenna
ASB Mohammed, S Kamal, MF bin Ain, R Hussin, ZA Ahmad, U Ullah, ...
ACES JOURNAL 35 (6), 674-680, 2020
92020
A novel negative meander line design of microstrip antenna for 28 GHz mmwave wireless communications
S Kamal, ASB Mohammed, MF Bin Ain, U Ullah, R Hussin, Z Arifin Ahmad, ...
Czech Technical University, 2020
92020
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