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

Volume

38

Issue

4

fYear

1990

fDate

4/1/1990 12:00:00 AM

Firstpage

350

Lastpage

357

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.52574

Filename

52574