Broadband impedance matching technique for microwave amplifiers

Abstract

Impedance matching for microwave amplifiers have been investigated extensively using different methods such as stub matching for broadband applications. In the present communication broadband impedance matching technique has been developed by combining the amplifier module with series microstrip transmission lines with optimum characteristic impedance (Zc) and electrical length. Resistive loading are used at both the source and load terminals to ensure unconditional stability. Different variable parameters like resistance values, characteristics impedance and length of the transmission line are used to design the amplifier. . The analysis of the design circuit has been carried out using multiplication of transmission matrices. This unique method hitherto unpublished can be used as a broadbandning technique for designing microwave amplifiers.