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Design of dual-band bandpass filter using DGS with controllable second passband

Chaudhary, Girdhari, Choi, Heungjae ORCID:, Jeong, Yongchae, Lim, Jongsik, Kim, Dongsu and Kim, Jun-Chul 2011. Design of dual-band bandpass filter using DGS with controllable second passband. IEEE Microwave and Wireless Components Letters 21 (11) , pp. 589-591. 10.1109/LMWC.2011.2167140

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In this letter, the application of a variable characteristic impedance transmission line that can be used to design a dual-band bandpass filter (BPF) is presented. The proposed filter offers a fixed first passband and a controllable second passband. The tuning of the second passband is achieved by varying the characteristic impedance of the shunt open stub of stub loaded resonator (SLR) with the help of a defected ground structure (DGS) transmission line and varactor diodes. In order to validate the theoretical predictions and simulated results, a two stage dual-band BPF with three transmission zeros was implemented and experimentally verified.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Institution of Engineering and Technology
ISSN: 1531-1309
Last Modified: 27 Oct 2022 08:50

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