Parallel power amplifier and associated methods

Details Parallel power amplifier and associated methods Parallel power amplifier and associated methods

2007-01-09

2007-01-09

Choe, Henry (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S251000

Reexamination Certificate

active

10880964

ABSTRACT:
A method and apparatus is provided for use in power amplifiers where multiple parallel power amplifiers provide various output power levels. By selectively enabling and disabling the parallel power amplifiers and combining their outputs, a desired output power can be realized, while choosing a combination of power amplifiers that provide a high efficiency.

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Aoki, Ichiro, “Distributed Active Transformer—A new Power-Combining and Impedance-Transformation Technique”, IEEE Transactions on Microwave Theory and Techniques, vol. 50, No. 1, Jan. 2002.

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