基于连续波干涉仪系统的高隔离度天线

doi:10.12305/j.issn.1001-506X.2022.11.04

摘要/Abstract

摘要：

针对连续波干涉仪系统中对收发天线的布阵要求及高隔离度要求, 设计了一款工作于X波段的串馈形式的微带天线阵列, 并将其排布成1发5收形式的收发天线阵列。基于干涉仪原理, 通过长短基线结合方式兼顾宽范围测向不模糊和高精度测角。同时, 通过天线布局优化法、阻挡法、铺设吸波材料法等, 将收发隔离度由52 dB提升至79 dB。所提出的高隔离度收发天线阵列在连续波干涉仪系统中具有良好的应用前景, 所采用提高隔离度方式在优化收发天线隔离度时具有一定的推广性。

关键词: 高隔离度, 连续波系统, 干涉仪, 微带天线

Abstract:

Aiming at the requirements for the array of transmitting and receiving antennas and high isolation requirements in the continuous wave interferometer system, a series-fed microstrip antenna array that works in the X-band is designed, and it is arranged into a transceiver antenna array with one transmitter and five receivers. Based on the principle of the interferometer, the combination of long and short baselines takes into account a wide range of direction finding without ambiguity and high precision angle measurement. At the same time, by methods including optimizing the antenna layout, blocking, and laying wave-absorbing materials, the transceiver isolation degree is increased from 52 dB to 79 dB. The proposed high-isolation transceiver antenna array has good application prospects in continuous wave interferometer systems, and the improved isolation method adopted has a certain generalization in optimizing the isolation of transceiver antennas.

Key words: high isolation, continuous wave system, interferometer, microstrip antenna

中图分类号:

TN82

权双龙, 王昊, 徐达龙, 井家明, 朱硕. 基于连续波干涉仪系统的高隔离度天线[J]. 系统工程与电子技术, 2022, 44(11): 3313-3319.

Shuanglong QUAN, Hao WANG, Dalong XU, Jiaming JING, Shuo ZHU. High isolation antenna based on continuous wave interferometer system[J]. Systems Engineering and Electronics, 2022, 44(11): 3313-3319.

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文献	频段	不足之处	改进措施
文献[9]	X	未考虑结构安装板引起的畸变	设计了结构安装板并考虑其影响
文献[23]	X	SIW加工成本更高	采用成本更低的微带天线
文献[24]	U & V	优化手段单一, 隔离度较低	多种方式结合, 进一步提高隔离
文献[25]	X	隔板高度太高, 系统尺寸太大	结合系统需求, 采用较低的隔板

参数	取值
频率/GHz	9.9	10.0	10.1	10.2
隔离度/dB	77	79	77	81

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