A Study on Design and Fabrication of the Coupled Line Filter Using Stepped Impedance Resonator for INMARSAT-C

계단형 임피던스 공진기를 이용한 INMARSAT-C용 결합선로 필터의 설계 및 구현에 관한 연구

Approximate design formulse for bandpass filter using stepped microstrip lines are derived. The coupling length of which can be adjusted according to the factor K.Some advantages fo this filter, thus, are the abilities to control the size and shape by changing the structure of the resonator. Using the design formulas an experimental filter was designed and fabricated . The experimental results have been agree with the designed ones, and hence, the validity of the proposed method has been confirmed.