Search Results - "Abdulkhaleq, Ahmed M."
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Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets
Published in Sensors (Basel, Switzerland) (22-04-2020)“…A new ultra-wideband (UWB) multiple-input/multiple-output (MIMO) antenna system is proposed for future smartphones. The structure of the design comprises four…”
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Journal Article -
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A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges
Published in Sensors (Basel, Switzerland) (21-04-2020)“…Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and…”
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Journal Article -
3
A Varactor-Based Very Compact Tunable Filter with Wide Tuning Range for 4G and Sub-6 GHz 5G Communications
Published in Sensors (Basel, Switzerland) (13-08-2020)“…A very compact microstrip reconfigurable filter for fourth-generation (4G) and sub-6 GHz fifth-generation (5G) systems using a new hybrid co-simulation method…”
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Journal Article -
4
Doherty Power Amplifier for LTE-Advanced Systems
Published in Technologies (Basel) (01-09-2019)“…The design and implementation of an asymmetrical Doherty power amplifier are discussed, where two Cree GaN High Electron Mobility Transistors (HEMTs) devices…”
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Journal Article -
5
Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique
Published in Inventions (Basel) (01-09-2019)“…A new proposed method is presented, where multiple antennas have been applied into HIPERLAN/2 system in addition to employing space-time diversity technique,…”
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Journal Article -
6
New multi‐standard dual‐wideband and quad‐wideband asymmetric step impedance resonator filters with wide stop band restriction
Published in International journal of RF and microwave computer-aided engineering (01-08-2019)“…New multi‐standard wide band filters with compact sizes are designed for wireless communication devices. The proposed structures realize dual‐wideband and…”
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Journal Article -
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Green and Highly Efficient MIMO Transceiver System for 5G Heterogenous Networks
Published in IEEE transactions on green communications and networking (01-03-2022)“…The paper presents the general requirements and an exemplary design of the RF front-end system that in today's handset is a key consumer of power. The design…”
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Journal Article -
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Design, Simulation and Implementation of Very Compact Open-loop Trisection BPF for 5G Communications
Published in 2019 IEEE 2nd 5G World Forum (5GWF) (01-09-2019)“…A very compact microstrip open-loop bandpass filter (BPF) with asymmetric frequency response and covering the 3.4 to 3.7 GHz 5G spectrum is presented in this…”
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Conference Proceeding -
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A New Broadband MIMO Antenna System for Sub 6 GHz 5G Cellular Communications
Published in 2020 14th European Conference on Antennas and Propagation (EuCAP) (01-03-2020)“…A new MIMO antenna system with broadband antenna radiators is introduced for sub 6 GHz fifth-generation (5G) mobile communications. The proposed design…”
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Conference Proceeding -
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Design of Bandpass Tunable Filter for Green Flexible RF for 5G
Published in 2019 IEEE 2nd 5G World Forum (5GWF) (01-09-2019)“…This paper proposes a compact three-pole planar tunable bandpass filter (BPF) covering the sub-6 GHz spectrum for 5G wireless communications. The microstrip…”
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Conference Proceeding -
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Load-Modulation Technique for Next Generation Mobile
Published in 2019 IEEE 2nd 5G World Forum (5GWF) (01-09-2019)“…In this research, an asymmetrical load-modulation power amplifier is proposed and described. The designed amplifier uses two GaN HEMT transistors with 25W and…”
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Conference Proceeding -
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Modified PIFA Array Design with Improved Bandwidth and Isolation for 5G Mobile Handsets
Published in 2019 IEEE 2nd 5G World Forum (5GWF) (01-09-2019)“…A new design of MIMO antenna array for fifth generation (5G) mobile handsets is proposed in this manuscript. The configuration of the design consists of eight…”
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Conference Proceeding -
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Investigation and Design of New, Efficient and Compact Load Modulation Amplifiers for 5g Base Stations : Design, Simulation, Implementation and Measurements of Radio Frequency Power Amplifiers Using Active Load Modulation Technique for More Compact and Efficient 5g Base Stations Amplifiers
Published 01-01-2020“…High efficiency is an essential requirement for any system, where the energy can be saved with full retention of system performance. The power amplifier in…”
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Dissertation -
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Multi-Resonant Class-F Power Amplifier Design for 5G Cellular Networks
Published in Radioengineering (16-06-2021)“…This work integrates a harmonic tuning mechanism in synergy with the GaN HEMT transistor for 5G mobile transceiver applications. Following a theoretical study…”
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Journal Article -
15
A Compact Load-Modulation Amplifier for Improved Efficiency Next Generation Mobile
Published in 2020 50th European Microwave Conference (EuMC) (12-01-2021)“…Current and future mobile communications systems are aimed to increase the achieved efficiency at the backoff and to reduce the required size for the…”
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Conference Proceeding -
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Design of Very Compact Combline Band-Pass Filter for 5G Applications
Published in Loughborough Antennas & Propagation Conference : 12-13 November 2018, Loughborough, UK (12-11-2018)“…In this paper, a compact microstrip band-pass filter (BPF) covering the 3.4 to 3.8 GHz spectrum bandwidth for 5G wireless communications is presented. The…”
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Conference Proceeding