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一、前言利用大ka值(k=2π/λ,λ——工作波长,a——波导半径)的圆波导传输H_(01)波,工作波长在毫米波范围有可能实现低损耗、远距离、极多路的通信系统.国外自五十年代开始研究毫米波波导通信,到六十年代初期发展很快.后因技术水平所限,有许多问题一时难以解决,加之当时的通信业务并不急需如此巨大的容量(波导通信理论上可实现几十路彩色电视及数十万路电话的容量),故研究工作暂时停顿下来.
I. INTRODUCTION The use of a circular waveguide with a large ka value (k = 2π / λ, λ - working wavelength, a - waveguide radius) to transmit H_ (01) waves and possible operating wavelengths in millimeter- , A very multi-channel communication system.Foreign wave communication from the beginning of the fifties study waveguide until the early sixties rapid development.Because of technical limitations, there are many problems at an instant difficult to solve, combined with the current communications business is not Urgent need for such a huge capacity (waveguide communications can theoretically dozens of color TV and hundreds of thousands of road phone capacity), so the research work temporarily paused.