A 2.2-4.2 Ghz Low-Loss Tunable Bandpass Filter Based On Low Cost Manufacturing Of Abs Polymer

Michael D. Sinanis,Mahmoud Abdelfattah,Mukerrem Cakmak,Dimitrios Peroulis

2018 IEEE 19TH WIRELESS AND MICROWAVE TECHNOLOGY CONFERENCE (WAMICON)（2018）

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Abstract

A low loss, tunable, second order, bandpass filter covering the range 2.2 - 4.2 GHz is presented. The filter is based on evanescent-mode cavity resonators and manufactured by CNC machining of low cost acrylonitrile-butadiene-styrene (ABS) plastic. The filter has an insertion loss from 0.77 - 0.26 dB, with a 3-dB fractional bandwidth from 8.4% to 9.1%. The extracted unloaded quality factor (Q) of the resonators is 500-700 over the tuning range.

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Key words

Microwave filters, tunable filters, low cost manufacturing, plastic filters, ABS

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