CAJ | 학술논문

利用相位信息确定来波入射角能达到较高的精度，但测向天线之间的互耦对系统性能的影响很大。加载匹配网络不但能降低接收机端口的驻波比，还能有效地减弱天线之间互耦的影响，改善系统性能。本文给出使用矩量法分析天线阵接收性能时几个关键问题的处理方法。加载不同匹配网络的结果表明，加载有耗网络会改善系统的测向性能，但系统的最大增益要降低。同时发现，对应对称振子和天线阵的特征尺寸出现了"广义谐振"现象，这种现象的消除只能通过改变系统的特征尺寸来实现。
이용상위신식학정래파입사각능체도교고적정도，단측향천선지간적호우대계통성능적영향흔대。가재필배망락불단능강저접수궤단구적주파비，환능유효지감약천선지간호우적영향，개선계통성능。본문급출사용구량법분석천선진접수성능시궤개관건문제적처리방법。가재불동필배망락적결과표명，가재유모망락회개선계통적측향성능，단계통적최대증익요강저。동시발현，대응대칭진자화천선진적특정척촌출현료"엄의해진"현상，저충현상적소제지능통과개변계통적특정척촌래실현。
High accuracy can be obtained in direction finding system where the angle of incidence is determined by the phase information of the incident wave, but the mutual coupling between antennae will effect the performance of the system. Loading the antennae with matching networks will not only decrease the VSWR at the ports of the receivers, but also reduce the influence of the mutual coupling. Some key techniques using the Method of Moments in the analysis of receiving performance of array are given. The results illustrate that loading lossy network can improve the performance of the system, but decrease the maximum gain. The phenomenon named "Generalized resonance" corresponding to the characteristic dimensions of the antennae and the array has also been found which can only be shifted out of the band by adjusting the characteristic dimensions.