"JOURNAL OF RADIO ELECTRONICS"  N 7, 2008

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INFLUENCE OF REREFLECTIONS AT INPUT CIRCUIT OF THE REFLECTION AMPLIFIER FOR MICROWAVE SIGNALS ON ITS CHARACTERISTICS

 

A.P.Venguer1, G.N. Ilin2
 

1 SAO RAS, San-Petersburg, Russia
2
IPA RAS, San-Petersburg, Russia


Received June 26, 2008

In this work the research results of  influence from input circuit of microwave one-port transistor amplifier (OPTA) with series positive feed back are described. This kind of amplifiers allows receive high enough parameters of transmission coefficient and noise figure by help of simple circuit. A new theoretical approach to the analysis of the reflection amplifier is applied, resulting conditions of the amplification mode for OPTA and the physical connection between transmission coefficient and noise figure. Calculated and experimental data are presented to illustrate the amplifier operation at L band.  

 

 

 

 

 

 

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