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首页> 外文期刊>IETE Journal of Research >Ultra-wideband (UWB) Bandpass Filter with Cascaded Lowpass Filter on Multilayer Liquid-Crystal Polymer (LCP) Substrate
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Ultra-wideband (UWB) Bandpass Filter with Cascaded Lowpass Filter on Multilayer Liquid-Crystal Polymer (LCP) Substrate

机译：多层液晶聚合物（LCP）基板上具有级联低通滤波器的超宽带（UWB）带通滤波器

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摘要

An ultra-wideband (UWB) bandpass filter with extended upper-stopband on multilayer liquid-crystal-polymer (LCP) substrate is presented in this paper. The proposed filter is designed to select the frequency band from 1.0 to 20GHz. The filter consists of two parallel-coupled stub-loaded resonators separated by a composite lowpass filter. The composite lowpass filter is implemented to obtain a very wide rejection band. The proposed filter is fabricated using multilayer LCP technology. Excellent agreement between expected and measured results of the filter is obtained. The measurement results show that the fabricated filter has a fractional bandwidth of 180% and a very low insertion loss of less than 0.6dB at center frequency of 10.5GHz. The measured filter has a wide stopband and an excellent rejection level higher than 40 dB.
机译：本文提出了一种在多层液晶聚合物（LCP）基板上扩展了上阻带的超宽带（UWB）带通滤波器。拟议中的滤波器旨在选择1.0至20GHz的频带。该滤波器由两个并联耦合的短负载谐振器组成，并由一个复合低通滤波器隔开。实施复合低通滤波器以获得非常宽的抑制带。所提出的滤波器是使用多层LCP技术制造的。在过滤器的预期结果与测量结果之间获得了极好的一致性。测量结果表明，所制造的滤波器在10.5GHz的中心频率下具有180％的带宽和非常低的插入损耗，小于0.6dB。所测得的滤波器具有较宽的阻带和出色的抑制水平，高于40 dB。

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