一種圓極化天線極化特性的幅度精測方法

An accurate test method for circular polarized antenna

摘要: 文章介紹了一種圓極化天線極化特性的測試方法,。該方法僅利用幅度測量得到圓極化天線極化橢圓相關(guān)數(shù)據(jù)，就可獲得圓極化天線主極化,、交叉極化,、圓極化軸比等全部信息。該方法簡單可行且可獲得精確的極化特性測試結(jié)果,。應(yīng)用該測試方法,，結(jié)合使用時域硬件門測試技術(shù)，在緊縮場成功實現(xiàn)了星載大型UHF螺旋天線的測試,，獲得了理想的測試結(jié)果,，使得大型緊縮場雙反射面系統(tǒng)在UHF頻段的應(yīng)用成為可能,。

Abstract: A new accurate test method for circular polarized antenna is proposed in this paper, which uses only the amplitude pattern in the test to calculate the characters of the relative polarization ellipse, and then, the main polarization pattern, cross polarization pattern, axial ratio (AR) pattern can be obtained. By using this new antenna test method and the time domain hardware-gating test technique, a large UHF band helix antenna has been tested in a compensated compact range (CCR) successfully and the ideal test results were obtained. That makes it possible for CCR’s dual reflectors system to be used in UHF frequency band.