Two new electric coupling structures for double folded substrate integrated waveguide cavity filters with transmission zeros

DOI number:10.1002/mop.27708

Journal:Microwave and Optical Technology Letters

Abstract:Two electric coupling structures for double folded substrate integrated waveguide (DFSIW) cavity filters are presented in this article. The coupling strength can be easily tuned, and the coupling mechanism is investigated. With electric coupling realized by the proposed structures in the main path and magnetic coupling by a conventional coupling structure in the cross coupling path, an X-band cross-coupled filter is designed, which possesses a transmission zero on either side of the passband. A prototype of the filter is fabricated to validate the predicted frequency response, and the measured results agree with the simulated ones.

First Author:Guang Yang (杨光)

Co-author:Wei Liu

Indexed by:Journal paper

Correspondence Author:Falin Liu

Discipline:Engineering

Document Type:J

Volume:55

Issue:8

Page Number:1815-1818

Translation or Not:no

Date of Publication:2013-08-01