A Dual-OAM-Mode-Based Array With Shared Feeding Network for In-Band Full-Duplex Systems

A dual-mode radial uniform circular array (UCA) is proposed for orbital angular momentum (OAM) generation and in-band full-duplex (IBFD) systems. The presented configuration is composed of an eight-element sequentially rotated patch antenna array and a partially shared feeding network (SFN). Each an...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 72; no. 10; pp. 7998 - 8003
Main Authors Liang, Yu-Zhong, Chen, Fu-Chang, Zeng, Wen-Feng, Xiang, Kai-Ran
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Angular momentum
Antenna arrays
Antenna feeds
Antenna measurements
Antennas
Configurations
Couplings
Dual-mode
Excitation
full-duplex
Full-duplex system
microstrip antenna array
orbital angular momentum (OAM)
Patch antennas
Reflector antennas
self-interference cancellation
uniform circular array (UCA)
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Summary:A dual-mode radial uniform circular array (UCA) is proposed for orbital angular momentum (OAM) generation and in-band full-duplex (IBFD) systems. The presented configuration is composed of an eight-element sequentially rotated patch antenna array and a partially shared feeding network (SFN). Each antenna element has a single feeding port and is fed by the corresponding output port of the SFN. A novel feeding network scheme is designed to achieve dual-OAM-mode excitation and self-interference cancellation between the transmit (Tx) and receive (Rx) ports. To validate the correctness of the proposed configuration, a prototype with 0 and −2 excitation modes is fabricated and measured. The measured results demonstrate that the proposed antenna operates from 5.68 to 6.1 GHz with an isolation of more than 40 dB over the whole band of interest.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2024.3416743