A triple‐mode bandpass filter using a modified circular patch resonator | Zendy

Serrano Ariana L. C. | Zendy; Correra Fatima Salete | Zendy

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A triple‐mode bandpass filter using a modified circular patch resonator

Author(s) -

Serrano Ariana L. C.,

Correra Fatima Salete

Publication year - 2009

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.23950

Subject(s) - band pass filter , resonator , return loss , insertion loss , bandwidth (computing) , microwave , filter (signal processing) , helical resonator , materials science , acoustics , physics , electronic engineering , optics , engineering , optoelectronics , electrical engineering , telecommunications , antenna (radio)

This article presents a triple‐mode bandpass filter using a modified circular patch resonator. Etched slots in the resonator split the TM 1,1,0 Zdegenerate fundamental modes and also perturb the TM 2,1,0 Zmode, approximating their resonant frequencies to form a third‐order bandpass filter. A 2.42 GHz centered filter was designed and fabricated. Experimental results showed a fractional bandwidth of 29%, return loss better than 16 dB, insertion loss of 0.5 dB, and good second harmonic band rejection. The filter exhibited a size reduction of 51% compared with a filter using an unperturbed circular patch resonator at the same frequency. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 178–182, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23950

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