Vol. 101

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2010-01-19

Novel Planar Multimode Bandpass Filters with Radial-Line Stubs

By Long Zhang, Zhi-Yuan Yu, and Shao-Guo Mo
Progress In Electromagnetics Research, Vol. 101, 33-42, 2010
doi:10.2528/PIER09121303

Abstract

This paper presents a novel approach for designing planar multimode wideband bandpass filters with good selectivity. The multimode resonator is composed of an open-ended microstrip line with length of half-wavelength (λ/2) and several radial-line stubs. By using different kinds of radial-line stub-loaded, different kinds of responses including three-pole and four-pole bandpass filters can be realized. Depending on electric field distribution and equivalent circuit model, the characteristics of the filter are analyzed. To verify the proposed method, two filters are implemented. The measured results exhibit good agreement with the simulation.

Citation


Long Zhang, Zhi-Yuan Yu, and Shao-Guo Mo, "Novel Planar Multimode Bandpass Filters with Radial-Line Stubs," Progress In Electromagnetics Research, Vol. 101, 33-42, 2010.
doi:10.2528/PIER09121303
http://jpier.org/PIER/pier.php?paper=09121303

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