Compact half-mode substrate integrated waveguide bandpass filters with capacitively loaded complementary single split ring resonators

Liwen Huang, Ian D. Robertson, Naichang Yuan

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A novel compact half-mode substrate integrated waveguide (HMSIW) filter with capacitively loaded complementary single split ring resonators (CSSRRs) is presented in this article.The proposed structure demonstrates lower resonant frequency and enhanced miniaturization compared to the HMSIW with conventional CSSRRs due to the additional capacitance generated by an additional conductor connected to the inner metal disk and overlaid across the ground plane of the CSSRR. Even lower resonant frequency and greater miniaturization can be achieved conveniently by increasing the area of the overlap or using thin dielectric substrate and the technique can readily be realized in a range of multilayer technologies. The equivalent circuit model for the proposed structure of the HMSIW with the capacitively loaded CSSRR is derived and a second-order bandpass filter with the proposed structure, operating at 4.92 GHz, is designed and fabricated. Excellent agreement is achieved between the simulation and the measurement. The proposed HMSIW filter with capacitively loaded CSSRRs shows good selectivity, low loss, and compact size, with the total size being only 9.8 × 7 mm2 (0.17 λ0 × 0.115 λ0) without the feed lines.

Original languageEnglish
Pages (from-to)1602-1606
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume55
Issue number7
Early online date26 Apr 2013
DOIs
Publication statusPublished - 1 Jul 2013
Externally publishedYes

Fingerprint Dive into the research topics of 'Compact half-mode substrate integrated waveguide bandpass filters with capacitively loaded complementary single split ring resonators'. Together they form a unique fingerprint.

Cite this