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Broadband bandpass filter using parallel-coupled microstrip line and coupled open stub resonator
Journal article   Peer reviewed

Broadband bandpass filter using parallel-coupled microstrip line and coupled open stub resonator

J. Marimuthu, A. Abbosh and B. Henin
Microwave and Optical Technology Letters, Vol.55(7), pp.1640-1644
2013
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Abstract

A novel broadband bandpass filter with multiple resonant modes based on parallel‐coupled microstrip line is proposed. The required cutoff frequency and out‐of‐band performance are achieved by placing L‐shaped capacitive cross‐coupling open stubs at the middle resonator with appropriate dimensions. A compact broadband bandpass filter of dimensions 18 × 29 mm2 is fabricated and tested for performance confirmation. The proposed filter demonstrates a wide bandwidth (from 3 to 7 GHz), as well as excellent out‐of‐band performance with more than 25‐dB rejection up to more than 12 GHz and sharp upper cutoff frequency due to the proper location of two transmission zeros.

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Citation topics
4 Electrical Engineering, Electronics & Computer Science
4.58 Wireless Technology
4.58.2765 Microwave Filters
Web Of Science research areas
Engineering, Electrical & Electronic
Optics
ESI research areas
Engineering
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