A Varactor-Based Tunable Combline Bandpass Filter Using Suspended Integrated Stripline (SISL)

Russell H. Kenney,Christopher J. Walker,Hjalti H. Sigmarsson,Jay W. McDaniel

IEEE Journal on Miniaturization for Air and Space Systems（2021）

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摘要

In this article, a varactor-based tunable combline suspended integrated stripline (SISL) bandpass filter with a tuning range of 2.3–3.9 GHz is designed and built. The filter is realized with five different substrate layers to implement an air cavity around the filter layer, creating the suspended stripline. Surface mount varactors are soldered onto the filter to allow for frequency tuning by rever...

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关键词

Substrates,Band-pass filters,Varactors,Tuning,Bandwidth,Microwave filters,Stripline

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