Title :
An MMAC C-band FET feedback power amplifier
Author :
Ezzeddine, Amin K. ; Hung, Hing-Loi A. ; Huang, Ho C.
Author_Institution :
COMSAT Lab., Clarksburg, MD, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
A feedback power amplifier using miniaturized microwave active circuit (MMAC) technology was developed for satellite C-band applications. This design demonstrates that a strong negative feedback can be implemented in the microwave frequencies to improve amplifier linearity and output power over a 750 MHz bandwidth. The amplifier provides a third-order intermodulation distortion improvement of 7 to 9 dB across the band at backoff, compared to results obtained using the conventional approach without feedback. The theory, proof-of-concept experiment, design, and MMAC implementation of the feedback amplifier are presented
Keywords :
feedback; hybrid integrated circuits; microwave amplifiers; microwave integrated circuits; power amplifiers; thin film circuits; 750 MHz; FET feedback power amplifier; IMD improvement; MIC; MMAC technology; miniaturized microwave active circuit; negative feedback; satellite C-band applications; thin film process; third-order intermodulation distortion; Active circuits; Bandwidth; Linearity; Microwave amplifiers; Microwave frequencies; Microwave technology; Negative feedback; Power amplifiers; Power generation; Satellites;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
