Diplexer Antenna for 5G Full-duplex Application

This work proposes a spiral filter-based diplexer antenna for dual-band full-duplex 5G application in C-band. The shared radiator is formed by a cross-shape Yagi-Uda antenna. The dual-band full-duplex characteristic is obtained by applying a diplexer with two different band-stop filters (BSFs) based...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2024-01, Vol.39 (1), p.31-38
Main Authors: Nguyen, Hong Quang, Do, Trong Toan, Hoang, Dinh Hai Truyen, Nguyen, Quoc Cuong, Le, Minh Thuy
Format: Article
Language:English
Subjects:
Antenna gain
Antennas
Bandstop filters
Bandwidths
C band
Communications systems
Design
Diplexers
Power dividers
Radiation
Radiators
Stub filters
Yagi antennas
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Summary:This work proposes a spiral filter-based diplexer antenna for dual-band full-duplex 5G application in C-band. The shared radiator is formed by a cross-shape Yagi-Uda antenna. The dual-band full-duplex characteristic is obtained by applying a diplexer with two different band-stop filters (BSFs) based on a high-order rectangular spiral-shaped open-stub filter. The proposed diplexer antenna is suitable for modern 5G full-duplex communication system applications with a small frequency ratio and high isolation between two ports by applying a Wilkinson power divider. The diplexer antenna is designed, fabricated, and measured, showing good performance of channel isolations of 27 dB/23 dB and the antenna gain of 4.7 dBi/4.2 dBi at two operation bands from 3.56 GHz to 3.68 GHz and from 3.72 GHz to 3.83 GHz covering the required 100 MHz maximum bandwidth in C-band while its frequency ratio is only 1.04.
ISSN:1054-4887
1943-5711
DOI:10.13052/2024.ACES.J.390105