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用于无源波束形成的由巴特勒矩阵馈电的类贴片辐射毫米波零阶谐振天线。

mmWave Zero Order Resonant Antenna with Patch-Like Radiation Fed by a Butler Matrix for Passive Beamforming.

作者信息

Mohan Manoj Prabhakar, Cai Hong, Alphones Arokiaswami, Karim Muhammad Faeyz

机构信息

School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.

Institute for Microelectronic, IME, A*STAR, Singapore 117685, Singapore.

出版信息

Sensors (Basel). 2023 Sep 19;23(18):7973. doi: 10.3390/s23187973.

DOI:10.3390/s23187973
PMID:37766028
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10535399/
Abstract

A small zero-order resonant antenna based on the composite right-left-handed (CRLH) principle is designed and fabricated without metallic vias at 30 GHz to have patch-like radiation. The mirror images of two CRLH structures are connected to design the antenna without via holes. The equivalent circuit, parameter extraction, and dispersion diagram are studied to analyze the characteristics of the CRLH antenna. The antenna was fabricated and experimentally verified. The measured realized gain of the antenna is 5.35 dBi at 30 GHz. The designed antenna is free of spurious resonance over a band width of 10 GHz. A passive beamforming array is designed using the proposed CRLH antenna and the Butler matrix. A substrate integrated waveguide is used to implement the Butler matrix. The CRLH antennas are connected to four outputs of a 4×4 Butler matrix. The scanning angles are 12∘, -68∘, 64∘, and -11∘ for excitations from port 1 to port 4 of the 4×4 Butler matrix feeding the CRLH antenna.

摘要

设计并制作了一种基于复合左右手传输线（CRLH）原理的小型零阶谐振天线，该天线在30 GHz频率下无需金属过孔即可实现类似贴片天线的辐射特性。通过连接两个CRLH结构的镜像来设计无过孔的天线。研究了等效电路、参数提取和色散图，以分析CRLH天线的特性。制作了该天线并进行了实验验证。测得该天线在30 GHz频率下的实际增益为5.35 dBi。所设计的天线在10 GHz带宽内无杂散谐振。利用所提出的CRLH天线和巴特勒矩阵设计了一个无源波束形成阵列。采用基片集成波导实现巴特勒矩阵。CRLH天线连接到一个4×4巴特勒矩阵的四个输出端。当4×4巴特勒矩阵的端口1至端口4激励CRLH天线时，扫描角度分别为12°、-68°、64°和-11°。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ccf5/10535399/16ab91104d74/sensors-23-07973-g016.jpg
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