Design of Lossy Interstage Network for Microwave Amplifiers Considering Gain and Reflection Coefficients

이득과 반사계수를 고려한 마이크로파 증폭기용 유손실 중간단 정합회로 설계

A design method of lossy interstage networks for broadband microwave amplifiers is presented. A lossy interstage network is assumed as the combination of two lossless networks between which a lossy serial impedance or a lossy parallel admittance is inserted. For the circuit with two transistors and a lossy element, realizable ranges of gain and reflection coefficients are derived. And the relationships between gain and reflection coefficients are derived. Illustrative examples are presented by using the proposed method.