Characteristics of Hybrid Circuits in Consideration of Lossy Transmission Line

摘要

In experimenting with hybrid circuits in a microwave frequency band and measuring those hybrid characteristics，the measured characteristics of the isolation and the reflection coefficients differ from the theoretical ones　at the center frequency f_0.　We may point out many reasons why the actual characteristics do not coincide with the theoretical values.　　In this paper we have considered one　of those reasons， the loss of transmission lines connecting each port， and have calculated the influence of this loss on the frequency characteristics of the hybrid circuits.