跳变折叠波导的空间谐波选择性的研究

The Characteristic of Harmonic Selection for the Folded Waveguide with Jumping Varying-Period

折叠波导是由传统的规则波导在平面内周期性弯曲而成的,它与其它的慢波系统相比有很多独特的优点。而变周期折叠波导是将折叠波导的周期由固定改为可变而形成的,它在保持了普通折叠波导的诸多优点的基础上,还具有谐波选择、带宽宽的优点。本文以三段周期跳变的折叠波导为研究对象,分析了其空间谐波的情况,并研究了其选择空间谐波的工作原理,最后得出了在该系统中实现谐波选择的条件。

The folded waveguide slow-wave structures are formed by bending the straight waveguides periodically, it has a series of advantages over other slow-wave structures. And the varying-period folded waveguide is formed by varying the period of the folded waveguide. Therefore, it not only has the advantages of the folded waveguide but also has the harmonic selectivity and the wider bandwidth. In order to study the varying-period folded waveguide, the space harmonic in the jumping varying-period folded waveguide is analyzed, the principle of har- monic selectivity in the jumping period folded waveguide consisting of three sections is presented and the condition to select harmonic for this slow-wave system is obtained.