Design of a Microstrip Bandpass Filter Using Step Impedance Resonators and Tapped Input/Output

스텝 인피던스 공전기와 입출력 텝핑을 이용한 마이크로 스트립 대역통과 필터의 설계

A design procedure for microstrip bandpass filters using step impedance resonators (SIR's) and tapped input/output to a conventional parallel coupled line bandpass filter is presented. The filter configuration consisting of both half-wavelength and SIR's suppreses to spurious resonance response near the second harmonics, while tapping techniques offer benefit in situations where the impractical. The measured frequency responses of the designed filter are in close agreement with the computed responses.