Title :
Analysis and design of microwave linearized amplifiers using active feedback
Author :
Ballesteros, Eduardo ; Perez, Felix ; Perez, Jorge
Author_Institution :
Dept. de Microondas, ETSI de Telecommun., Univ. Politecnico de Madrid, Spain
fDate :
3/1/1988 12:00:00 AM
Abstract :
Intermodulations distortion of active feedback amplifier systems has been analyzed using a simple method. Starting from the amplitude characteristic of both amplifiers-the main and the auxiliary-it is possible to calculate the intermodulation distortion of the complete system. Analytical results show that third-order intermodulation products can be considerably reduced when active feedback with correct amplitude and phase is used. Experimental measurements that confirm the theoretical analysis have been made on a one-stage bipolar transistor amplifier
Keywords :
bipolar transistor circuits; feedback; intermodulation; linear network analysis; linear network synthesis; microwave amplifiers; solid-state microwave circuits; active feedback; intermodulation distortion; linear network analysis; microwave linearized amplifiers; one-stage bipolar transistor amplifier; third-order intermodulation products; Bipolar transistors; Distortion measurement; Feedback; Feedback amplifiers; Frequency; High power amplifiers; Intermodulation distortion; Microwave amplifiers; Narrowband; Nonlinear distortion; Power amplifiers; Power generation; TV;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
