Journal ArticleDOI
A review of hybrid couplers: State-of-the-art, applications, design issues and challenges
Ali Abdulateef Abdulbari,Sharul Kamal Abdul Rahim,Ping Jack Soh,Ping Jack Soh,Muhammad Hashim Dahri,Akaa Agbaeze Eteng,Mohammed Yousif Zeain +6 more
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TLDR
Several techniques for hybrid coupler to achieve the required bandwidth and size reduction are highlighted, such as the T‐shape, meander line, two sections, three‐section, and parallel couple lines.About:
This article is published in International Journal of Numerical Modelling-electronic Networks Devices and Fields.The article was published on 2021-08-01. It has received 11 citations till now.read more
Citations
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Proceedings Article
Miniaturized fractal rat-race, branch-line, and coupled-line hybrids
H. Ghali,Tarek Moselhy +1 more
TL;DR: In this paper, space filling curves have been used to realize a family of miniaturized hybrid couplers, and the performance of the proposed space-filling hybrids is as good as that of the corresponding conventional structures, and even better in some cases.
Journal ArticleDOI
Design and Implementation of a beam steering antenna array using butler matrix feed network for X band applications
TL;DR: In this paper , a beam steerable antenna array using a 4 × 4 Butler Matrix feed network technique is developed to operate at the X band frequency range, where the main beam pattern of the antenna array is switched between four directions (+10°, −38°, +38° and −10°).
Journal ArticleDOI
Single-Layer Planar Monopole Antenna-Based Artificial Magnetic Conductor (AMC)
Ali Abdulateef Abdulbari,Sharul Kamal Abdul Rahim,Firas Abedi,Ping Jack Soh,Ali R. Hashim,Rami Qays,Sarosh Ahmad,Mohammed Yousif Zeain +7 more
TL;DR: In this paper , a coplanar waveguide (CPW)-fed patch antenna is fabricated on a layer of metasurface to increase gain, and the antenna is fabrication on a Roger substrate with a thickness of 0.25mm.
A 4 × 4 Millimeterwave-Frequency Butler Matrix in Grounded Co-Planar Waveguide Technology for Compact Integration With 5G Antenna Arrays
Laura Van Messem,Arno Moerman,Olivier Caytan,Igor Lima de Paula,Bram Hoflack,Bram Stroobandt,Sam Lemey,Marc Moeneclaey,Hendrik Rogier +8 more
TL;DR: In this paper , the authors presented a novel Butler matrix implemented in the grounded co-planar waveguide (GCPW) technology, compactly integrated with a highly efficient and broadband air-filled substrate integrated waveguide cavity-backed patch antenna array (AA), giving rise to a broad operational frequency range covering the n257, n258, and n261 fifth-generation (5G) bands.
Journal ArticleDOI
Welcome to the New Editor-in-Chief
N. Scott Barker,Thomas Zwick +1 more
TL;DR: The Editorial Board is modified by adding track editors between the EiC and the AEs, and the track editors now make the final decisions on all papers, and this allows theEiC to pay more attention to how well the Letters is performing in terms of time from submission to publication.
References
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Journal ArticleDOI
A compact seven‐section rat‐race hybrid coupler incorporating PBG cells
TL;DR: In this paper, a rat-race coupler has been doubly miniaturized: characteristic impedances and electrical lengths of microstrip sections have been adequately modified as the first step of size reduction and T-shaped PBG cells have been implemented to diminish strip section length as the second step of circuit miniaturization.
Journal ArticleDOI
Novel Filtering 180° Hybrid Coupler and Its Application to $2 \times4$ Filtering Butler Matrix
TL;DR: In this paper, a novel filtering 180° hybrid coupler is proposed and used to design a $2 \times 4$ filtering Butler matrix, which provides power division and phase shift together with a second-order bandpass transfer function, and is based only on coupled resonators.
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Compact Metamaterial Based $4\times4$ Butler Matrix With Improved Bandwidth for 5G Applications
TL;DR: This paper proposes a novel compact butler matrix with improved bandwidth based on open-circuit coupled-lines and interdigital capacitor unit-cell to develop composite right/left handed (CRLH) transmission-line (TL) metamaterial structure.
Journal ArticleDOI
A Miniaturized Wideband Three-Section Branch-Line Hybrid With Harmonic Suppression Using Coupled Line and Open-Ended Stubs
TL;DR: In this paper, a three-section branch-line hybrid with harmonic suppression is designed using a novel transmission line model, which is constructed using a coupled line, two series transmission lines, and open-ended stubs.
Journal ArticleDOI
Differentially Fed Wideband Rectangular DRA With High Gain Using Short Horn
TL;DR: In this paper, a differentially fed rectangular dielectric resonator antenna (DRA) is presented to excite the TE1δ1 mode in a rectangular DRA.