CAJ | 학술논문

针对轴比测试需要连续旋转线极化天线极化轴，在高频段旋转关节难以消除高速旋转带来的电缆抖动所引起的幅度和相位不一致性，提出了一种快速、精确测量圆极化天线轴比的测试方法。基于椭圆极化波的正交分解理论，该方法利用线极化天线对待测圆极化天线进行两组正交的线极化幅度测量，通过计算得到圆极化天线的轴比等极化椭圆参数的信息。在此基础上又提出了只用三个线极化分量测量圆极化天线轴比的方法。通过在微波暗室中对圆极化天线进行多次测试，验证了该方法的有效性。该方法提高了圆极化天线的测试效率，降低了测试难度，对于工程应用有重要的应用价值。
침대축비측시수요련속선전선겁화천선겁화축，재고빈단선전관절난이소제고속선전대래적전람두동소인기적폭도화상위불일치성，제출료일충쾌속、정학측량원겁화천선축비적측시방법。기우타원겁화파적정교분해이론，해방법이용선겁화천선대대측원겁화천선진행량조정교적선겁화폭도측량，통과계산득도원겁화천선적축비등겁화타원삼수적신식。재차기출상우제출료지용삼개선겁화분량측량원겁화천선축비적방법。통과재미파암실중대원겁화천선진행다차측시，험증료해방법적유효성。해방법제고료원겁화천선적측시효솔，강저료측시난도，대우공정응용유중요적응용개치。
Axial ratio (AR) test requires continuous rotation of polarization axis of linear polarization(LP) antenna, however high-speed rotation of rotary joint brings cable jitter, which causes inconsistencies between amplitude and phase. Since it is difficult to eliminate the jitter at high frequency, a fast and accurate measurement method of the AR of CP antennas was presented. The method, which is based on the orthogonal decomposition theory of elliptically polarized wave, employs LP antenna to measure two groups of orthogonal LP amplitude of the CP antennas under test. Therefor axial ratio of circularly polarized antennas and other parameters of elliptic polarization can be obtained by calculating. And on this basis, an innovative method of measuring the AR of CP antennas using only three linear polarization components was proposed. By measuring CP antennas in an anechoic chamber repeatedly, the method was proved to be effective. This method can increase the efficiency of measuring CP antennas, ease the difficulty level of test, and is of great importance to engineering application.