Dual mode power amplifier
First Claim
1. An amplification module comprising:
- a power amplifier configured to operate in a first gain mode and a second gain mode;
said power amplifier comprising a first power amplifier input stage, said first power amplifier input stage having an input and an output;
said power amplifier further comprising a second power amplifier input stage, said second power amplifier input stage having an input and an output, said output of said second power amplifier input stage being coupled to said output of said first power amplifier input stage;
wherein said first power amplifier input stage is activated in response to a first bias voltage in said first gain mode and said second power amplifier input stage is activated in response to a second bias voltage in said second gain mode.
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Accused Products
Abstract
A power amplifier is configured to operate in a first gain mode and a second gain mode. A first power amplifier input stage has an input and an output. A second power amplifier input stage has an input and an output, where the output of the second power amplifier input stage is coupled to the output of the first power amplifier input stage. The first input stage is turned on in response to a first bias voltage in the first gain mode and the second input stage is turned on in response to a second bias voltage in the second gain mode. Alternatively, a first input stage and an intermediate stage can be switched off by turning off their respective bias voltages, and a second input stage can be switched on by turning on its respective bias voltage; the intermediate stage and the second input stage sharing a common output.
59 Citations
24 Claims
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1. An amplification module comprising:
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a power amplifier configured to operate in a first gain mode and a second gain mode;
said power amplifier comprising a first power amplifier input stage, said first power amplifier input stage having an input and an output;
said power amplifier further comprising a second power amplifier input stage, said second power amplifier input stage having an input and an output, said output of said second power amplifier input stage being coupled to said output of said first power amplifier input stage;
wherein said first power amplifier input stage is activated in response to a first bias voltage in said first gain mode and said second power amplifier input stage is activated in response to a second bias voltage in said second gain mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A power amplifier configured to operate in first and second gain modes, said power amplifier comprising:
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a first input stage being selectively turned on and turned off by a first bias voltage;
a second input stage being selectively turned on and turned off by a second bias voltage;
an intermediate stage driven by said first input stage, said intermediate stage being selectively turned on and turned off by a third bias voltage;
said intermediate stage and said second input stage sharing a common output;
wherein said first input stage and said intermediate stage are turned on and said second input stage is turned off in said first gain mode;
wherein said first input stage and said intermediate stage are turned off and said second input stage is turned on in said second gain mode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification