Analytic full-wave analysis and design of direct-coupled dielectric loaded bandpass filters in rectangular waveguide configuration using the TE/sub 10/ mode with a spurious-free response up to twice the operating frequency is described. The filter has no tuning screws and is small in size. Theoretical design of the filter is supported by the experimental results. Superiority of the filter over the inductive window-coupled filter is presented. Practical issues faced while building the filter are discussed. An alternative folded configuration of the filter that allows the implementation of both the canonical elliptic function as well as the Chebychev response is also presented.
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机译：描述了使用TE / sub 10 /模式的矩形波导配置中的直接耦合介质加载带通滤波器的全波分析和设计，该滤波器具有高达两倍工作频率的无杂散响应。过滤器没有调节螺钉，并且尺寸很小。实验结果支持了滤波器的理论设计。提出了该滤波器相对于电感式窗口耦合滤波器的优越性。讨论了构建过滤器时面临的实际问题。还提出了一种滤波器的另一种折叠配置，它既可以实现规范的椭圆函数，也可以实现切比雪夫响应。
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