一种低副瓣波纹喇叭天线的设计与实现

文章设计了一种高斯分布的波纹喇叭天线,具有增益高、转换效率高、交叉极化低、相位中心不随频率变化的特点。该天线采用正交馈电,结构简单紧凑,以双线极化或圆极化方式工作。根据天线设计参数,建立了天线模型,进行了优化设计。仿真和实测结果表明,天线在频率34～36 GHz范围内,增益大于20dBi,方向图在E面和H面具有良好对称性,副瓣电平不大于-26 d B,驻波比小于1.5,整体性能满足工程应用要求。

Design and Implementation of a Low Sidelobe Corrugated Horn Antenna

In this paper, a Gaussian distributed corrugated horn antenna is designed with high gain, high conversion effien?cy, low cross-polarization and stable phase center. The antenna can work in dual-linear or circular polarization, it adoptsorthogonal coaxial feed and has a simple and compact structure. With establishing the antenna simulation model accordingto parameter design, the whole horn antenna is optimized. The simulation and measurment results show that the antennahas a gain of greater than 20dBi in the frequency range of 34~36GHz, the side lobe level is not greater than -26 dB, andthe pattern has good symmetry on the E-plane and H-plane. The overall performance of the antenna satisfies the require?ments of engineering applications.