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US 7,248,109 B2Granted
Method and apparatus for an improved power amplifier
AssigneePelikan Technologies, Inc.
InventorsLawrence Burns, Chong Woo, David Sorensen
Life of this patent
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Abstract
A power amplifier has an input conditioning circuit. At least first and second amplifiers are in parallel with each other and have inputs and outputs. An input signal is coupled to the inputs of the first and second amplifiers. A multi-input power combiner is provided. The outputs of the first and second parallel amplifiers are combined by the multi-input power combiner to add signals of the outputs constructively.
Claims45
A power amplifier, comprising:
- an input conditioning circuit;
- at least first and second amplifiers in parallel with each other and having an input and an output, an input signal coupled to the inputs of the at least the first and second amplifiers;
- and
- a multi-input power combiner, wherein the outputs of the at least first and second parallel amplifiers are combined by the multi-input power combiner to add signals of the outputs constructively, wherein at least one of the amplifiers is an inverting amplifier that changes the polarity of at least some of the inputs or outputs.
1 more element
A power amplifier, comprising:
- an input conditioning circuit;
- at least first and second amplifiers in parallel with each other and having an input and an output, an input signal coupled to the inputs of the at least the first and second amplifiers;
- and
- a multi-input power combiner, wherein the outputs of the at least first and second parallel amplifiers are combined by the multi-input power combiner to add signals of the outputs constructively, wherein the amplifier includes multiple set of amplifiers, at least one of an amplifier being inverting in its signal polarity.
1 more element
Dependencies are inferred from the claim text.