ABSTRACT

In this paper, a broadband microstrip ring antenna with single layer and compact size is proposed. The bandwidth of conventional microstrip ring antenna is increased from 1%~3% to 15% by loading an additional stub. A simple formula is presented as the design guideline of the proposed antenna. Based on the proposed antenna element, a linear array working at 19 ~ 21 GHz is designed and fabricated, the array can steer to 60° with gain reduction less than 3.5 dB, good agreement is observed between the experimental and simulated results.

中文翻译：

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一种用于广角扫描相控阵的单层宽带微带环形天线

摘要

本文提出了一种单层、尺寸紧凑的宽带微带环形天线。通过加载额外的短截线，传统微带环形天线的带宽从 1%~3% 增加到 15%。提出了一个简单的公式作为建议天线的设计指南。基于所提出的天线单元，设计并制造了一个工作在 19 ~ 21 GHz 的线性阵列，该阵列可以转向 60°，增益降低小于 3.5 dB，实验和模拟结果之间观察到良好的一致性。