基于连续波干涉仪系统的高隔离度天线

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。

High isolation antenna based on continuous wave interferometer system

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.