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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
572015
A Broadband Circularly Polarized Wide-Slot Antenna with a Miniaturized Footprint
U Ullah, S Koziel
IEEE Antennas and Wireless Propagation Letters, 2018
552018
Enhanced-Performance Circularly Polarized MIMO Antenna With Polarization/Pattern Diversity
U Ullah, IB Mabrouk, S Koziel
IEEE Access 8, 11887 - 11895, 2020
512020
A review of wideband circularly polarized dielectric resonator antennas
U Ullah, MF Ain, ZA Ahmad
China Communications 14 (6), 65-79, 2017
412017
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
402019
A Geometrically Simple Compact Wideband Circularly Polarized Antenna
U Ullah, S Koziel
IEEE Antennas and Wireless Propagation Letters, 2019
362019
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
342019
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
272015
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
262019
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
222021
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
212020
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
212019
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
202018
Series-slot-fed circularly polarized multiple-input–multiple-output antenna array enabling circular polarization diversity for 5G 28 GHz indoor applications
U Ullah, M Al-Hasan, S Koziel, IB Mabrouk
IEEE Transactions on Antennas and Propagation 69 (9), 5607-5616, 2021
182021
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
182020
An equivalent circuit of microstrip slot coupled rectangular dielectric resonator antenna
MF Ain, ZA Ahmad, MA Zakariya, U Ullah
Progress in Electromagnetics Research Symposium, PIERS 2012 Kuala Lumpur …, 2012
172012
Low-cost modeling of microwave components by means of two-stage inverse/forward surrogates and domain confinement
S Koziel, A Pietrenko-Dabrowska, U Ullah
IEEE Transactions on Microwave Theory and Techniques 69 (12), 5189-5202, 2021
162021
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
142020
A review of microstrip patch antenna design at 28 Ghz for 5G applications system
ASB Mohammed, S Kamal, MF Ain, ZA Ahmad, U Ullah, M Othman, ...
International Journal of Scientific and Technology Research 8 (10), 341-352, 2019
142019
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
142019
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