基于X波段的高功率圆极化反射阵列天线全波分析研究

Full wave analysis of high power circularly polarized reflective array antenna based on X-band

传统圆极化反射阵列天线分析方法对天线辐射特性等方面分析的不足,导致在天线全波分析时精度较低,为此,提出了基于X波段的高功率圆极化反射阵列天线全波分析方法。首先研究圆极化反射阵列天线的工作原理,采集相关参数,然后根据参数进行反射阵列天线相位分布、辐射特性、口径效率和单元间距四个方面进行分析。通过仿真实验测试设计阵列天线的性能,验证了本方法的优越性,本方法对圆极化反射阵列天线分析的相位差(7.7±4)°,增益和轴比的误差分别为0.7 dB和0.5 dB,测试结果与仿真结果较吻合,证明了该方法能获得高精度的圆极化反射阵列天线分析结果。

The traditional analysis method of circularly polarized reflective array antenna is insufficient in analyzing antenna radiation characteristics, which leads to low accuracy in full-wave analysis of antenna. Therefore, this paper proposes a full-wave analysis method of high power circularly polarized reflective array antenna based on X-band. Firstly, the working principle of circularly polarized reflective array antenna is collected, and then phase distribution, radiation characteristics, aperture efficiency and cell spacing of reflective array antenna are analyzed according to parameters. Finally, the analysis of circularly polarized reflective array antenna is tested, which verifies the superiority of this method. The phase difference of circularly polarized reflective array antenna analyzed by this method is 7.7°±4°, and errors of gain and axial ratio are 0.7 dB and 0.5 dB, respectively. The test results are in good agreement with simulation results.