An MMAC C-band FET feedback power amplifier |
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| Authors: | Ezzeddine A.K. Hung H.-L.A. Huang H.C. |
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| Affiliation: | COMSAT Lab., Clarksburg, MD; |
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| 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 |
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