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Affiliation of Author(s):电子信息工程学院

Journal:ELECTRONICS LETTERS

Key Words:microstrip filters band-pass filters coupled circuits resonator filters UHF filters compact high selectivity dual-mode microstrip BPF frequency-dependent source-load coupling bandpass filter short-stub centred loaded resonator transmission zero WLAN application frequency 2 4 GHz

Abstract:In this letter, a dual-mode microstrip bandpass filter (BPF) with compact size and high selectivity is designed with a short-stub centred loaded resonator. Owing to the frequency-dependent source-load coupling and the intrinsic characteristics of the short-stub loaded resonator, three transmission zeros that are located near the passband edges and in the upper-stopband can be generated to improve the selectivity. The compact BPF with fractional bandwidth of 3.5% located at 2.4 GHz for WLAN application has been designed and fabricated, and good agreement between simulation and measurement verifies the validity of this design methodology.

ISSN No.:0013-5194

Translation or Not:no

Date of Publication:2018-02-22

Co-author:liufei,徐涛,孙亮,薛一凡

Correspondence Author:denghongwei