한국전자파학회:학술대회논문집 (Proceedings of the Korea Electromagnetic Engineering Society Conference)
- 한국전자파학회 2000년도 종합학술발표회 논문집 Vol.10 No.1
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- Pages.121-124
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- 2000
통과대역 평탄도를 개선한 대역 통과 여파기의 설계
A Design of BPF improved passband flatness
초록
In mobile communication repeaters, very small size with sharp skirt response is needed as the BPF performances. The passband flatness of the proper BPF becomes very bad due to the low value of the resonator Q-factor used in the BPF. Which could girt serious level unbalance between channels. This flatness problem can he solved by a kind of compensated filler, which has 'reverse-curve'or 'concave shape'as the passband response. In this paper, the design method of the proposed 'concave bandpass filter'without matching and loss problems is presented. The designed and fabricated filter can properly and easily compensate the convex or bad flat passband response.
키워드