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Design of Hairpin-Comb Bandpass Filter using Ground Aperture  

이진택 (아주대학교 전자공학과)
박정훈 (인천전문대학 통신과)
김상태 (산업기술정책연구소)
신철재 (아주대학교 전자공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.1, 2003 , pp. 20-26 More about this Journal
Abstract
This paper presents hairpin-comb bandpass filter using ground aperture. Hairpin-comb resonator maintains the weak coupling though the space between two resonators is very small. This has the good merit that the entire filter size is small for narrowband bandpass filter. The coupling between two hairpin-comb resonators so very weak that can't be applicable to general microstrip. We compensate the coupling by using ground aperture. It makes the hairpin-comb filter possible that can be applicable to general microstrip. Also it has the good merit which adjusts the bandwidth by changing the size of aperture without changing the space. In this paper, we fabricate the bandpass filter, which has 1.78 GHz center frequency and 62 MHz (3.5%) fractional bandwidth.
Keywords
Hairpin-Comb; Bandpass Filter; Narrowband; Aperture; Compact Size;
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