Title :
A method to find the optimal impedances to the terminations in the broadband small signal amplifiers in the case of a bilateral transistor
Author :
Sima, Ion T. ; Balan, Constantin
Author_Institution :
Mil. Tech. Acad., Bucharest, Romania
Abstract :
In this paper, a new method is applied to find the optimal impedance at discrete frequencies for microwave broadband small signal amplifiers. It is well known that microwave amplifier design is difficult because S-parameters are variable with frequency. The method consists of the optimization of RLC-series or RLC-parallel equivalent circuits to obtain the least magnitudes sum of the reflection coefficients at the considered frequencies. The proposed approach is very useful in many practical cases and offers the input impedance for known real frequency techniques
Keywords :
S-parameters; circuit CAD; circuit optimisation; electric impedance; equivalent circuits; impedance matching; linear network synthesis; microwave amplifiers; wideband amplifiers; RLC-parallel equivalent circuit; RLC-series equivalent circuit; S-parameters; bilateral transistor; broadband small signal amplifiers; input impedance; microwave amplifier design; optimal impedances; optimization; reflection coefficients; terminations; Broadband amplifiers; Impedance;
Conference_Titel :
Semiconductor Conference, 1995. CAS'95 Proceedings., 1995 International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-2647-4
DOI :
10.1109/SMICND.1995.495071
