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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >Parallel-coupled stub-loaded resonator bandpass filter with ultra-wideband passband on multilayer liquid crystal polymer substrates
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Parallel-coupled stub-loaded resonator bandpass filter with ultra-wideband passband on multilayer liquid crystal polymer substrates

机译：多层液晶聚合物基板上具有超宽带通带的并联耦合短波谐振腔带通滤波器

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摘要

A multilayer bandpass filter with ultra-wideband passband is presented in this paper. The filter is designed to have a very wide passband with a fractional bandwidth of about 180% at a center frequency of 10.5 GHz. The filter consists of two sections of parallel-coupled lines loaded at the center with short-circuited stub. Each of the coupled line sections and short-circuited stubs is designed to be a quarter-wavelength long at the desired center frequency. As a result, the filter exhibited a selective filtering characteristic equivalent to a five-pole Chebyshev filter with a very low insertion loss. The proposed filter is realized and fabricated using multilayer liquid crystal polymer substrate. The design is successfully realized in theory and verified by full-wave electromagnetic simulation of the full layout and the experiment where excellent agreement is obtained.
机译：本文提出了一种具有超宽带通带的多层带通滤波器。该滤波器被设计为具有非常宽的通带，在10.5 GHz的中心频率处的分数带宽约为180％。该滤波器由两部分平行耦合的线组成，这些线的中间装有短路短截线。每个耦合的线路部分和短路的短截线都设计为在所需的中心频率处为四分之一波长。结果，该滤波器表现出与具有极低插入损耗的五极切比雪夫滤波器等效的选择性滤波特性。所提出的滤波器是使用多层液晶聚合物基板实现和制造的。该设计在理论上成功实现，并通过全布局的全波电磁仿真和获得良好一致性的实验进行了验证。

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