5G Elliptical Slot-Coupled Butler Matrix with Tri-beam Antenna Beamforming Systems


Maran, Ghayathri and Nadarajan, Kavithaa and Md Jizat, Noorlindawaty and Yusoff, Zubaida and Roslee, Mardeni and Yamada, Yoshihide (2021) 5G Elliptical Slot-Coupled Butler Matrix with Tri-beam Antenna Beamforming Systems. In: 2021 IEEE 15th Malaysia International Conference on Communication (MICC), 1-2 Dec. 2021, Malaysia.

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This paper presents a beam forming network using a three-input three-output Butler Matrix which is designed using the slot-coupled transition method. In this method, two sides of the substrate are stacked on top of each other, resulting in a compact size and a non-lossy structure. Unlike the conventional Butler Matrix, this design only requires hybrid couplers and phase shifters while circumvents the crossover structure. In the design of the Butler Matrix, three elliptical slot-coupled hybrids (ESH) with common ground plane are connected to the 0 degree, −90 degree and −180 degree phase shifters which produce the progressive output phase difference of 0 degree, −120 degree, and 120 degree, respectively. When the Butler Matrix with patch antenna array is fed with signals, three beams are created, pointing towards −4 degree, −36 degree, and 29 degree with the gains of 11 dBi, 9.19 dBi, and 11 dBi, respectively. The radiation pattern is generated from the antenna array factor, which derived from the consecutive output phases with λ 0 /2 antenna spacing at 28 GHz. The system can be a platform for fifth generation (5G) wireless connectivity at millimeter wave.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Component, formatting, style, styling, insert
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Nurul Iqtiani Ahmad
Date Deposited: 23 Feb 2022 03:39
Last Modified: 23 Feb 2022 03:39
URII: http://shdl.mmu.edu.my/id/eprint/9993


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