H11O多模圆弯曲波导传输特性
TRANSMISSION CHARACTERISTICS OF H11O MULTIMODE CIRCULAR BENDING WAVEGUIDE
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摘要: 近年来,N.Nakajima等对4、5、6GHz共用天线波导系统中一种高性能偏置激励的卡塞格伦微波天线所用多模圆弯曲波导的传输特性及其高次波型E01O的影响进行了分析和实验研究,而文中对弯波导所激发的另一重要高次波型H21O的影响和有效地处理方法并未解决。本文根据任意截面弯曲波导耦合波方程组分析并计算了H11O多模圆弯曲波导内高次波型耦合特性及其前两个最重要的较低阶高次波E01O、H21O的耦合系数和波型激发量,提出了一种宽频带H21O、E01O波型滤波器,实验表明波型滤波器的实用效果良好,从而使N.Nakajima等遇到的并待克服的问题可基本解决。
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关键词:
Abstract: Higher order modes coupling characteristics in H11O, circular bending waveguide are analyzed according to the coupled wave equations, and coupling coeffecients of E01O, H21O, modes and their amplitudes are computed. A broad-band H21O, E01O mode filter has been presented. Experimental results indicated that its practical application is quite satis-factory. Thus, the problems presented by N. Nakajima, etc. can be solved. -
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