同轴馈源性能改善的方法

The Method for Improving the Performance of Coaxial Feeds

同轴馈源是用于反射面天线双频共用馈源的一种重要形式,其内导体为工作在高频段的圆波导馈源,同轴区域为工作在低频段的同轴馈源。如何提高同轴区域低频段馈源的性能,是这种馈源研究的主要内容。采用电磁仿真和实验的方法研究了同轴馈源辐射方向图等化的技术途径,测试结果与仿真结果吻合,并达到了预期的设计指标,验证了技术途径的有效性。

The coaxial feed is an important dual-band feed used in reflector antennas. The inner conductor of the coaxial feed is the high frequency feed, and the coaxial zone is the low frequency feed. The main research content is how to improve the performance of the low frequency feed. The paper studies the technique routes to realize the equal E and H pattern of the coaxial feed by electromagnetic emulation and experiment. The measured patterns of the feed are accord with the emulational results, and attain the pe...