Efficiency enhancement for MMIC amplifiers

Details Efficiency enhancement for MMIC amplifiers Efficiency enhancement for MMIC amplifiers

2005-11-29

2005-11-29

Mottola, Steven J. (Department: 2817)

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

C330S295000, C330S296000, C330S302000

Reexamination Certificate

active

06970039

ABSTRACT:
The present innovation is directed to a single-chip integrated circuit power amplifier configured to employ the efficiency enhancement techniques utilized in Doherty amplifiers. The single-chip integrated circuit power amplifier may be implemented using uniquely designed biasing circuits as described herein. Also, the use of combined HBT/FET processes and a lumped quarter-wavelength transformer may be inherently well suited for the implementation of Doherty amplifiers in the single-chip techniques described herein.

REFERENCES:
patent: 5568086 (1996-10-01), Schuss et al.

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