辐射缝隙导纳和耦合缝隙阻抗的频率特性,是影响缝隙阵列天线驻波带宽的主要因素。以改善整个缝隙阵阻抗匹 配频率特性为出发点,提出了一种展宽波导缝隙阵列天线驻波带宽的新方法,即选择合适的辐射缝隙的总导纳常数。仿 真分析表明,改变后的缝隙阵列天线的驻波带宽有了较大改善,其与理论分析的结果是一致的。

The frequency characteristic of the admittance of radiation slot and the impedance of coupling slot is the main factor that influences the bandwidth of the slot array antenna. Based on the idea of improving the frequency characteristic of the whole array, a novel method of improving the VSWR bandwidth of the slot array antenna is presented in the paper,which selects a suitable admittance constant to reduce the influences of frequency. The simulation analysis has indicated that the VSWR bandwidth of the changed slot array has been improved,and it is consistent with the result of the theory. The result of this paper brings forward a new idea for improving the VSWR bandwidth of the slot array antenna.