Transmitter including a composite amplifier
First Claim
Patent Images
1. A composite amplifier including:
- a main power amplifier and an auxiliary power amplifier, which are connected to a load over a Doherty output network; and
means for emulating and compensating for the non-linear behavior of the output current of said auxiliary power amplifier in the input signal to said main amplifier.
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Accused Products
Abstract
A composite amplifier includes a main power amplifier (10) and an auxiliary power amplifier (12), which are connected to a load (14) over a Doherty output network (16). A non-linear function (18) and a cross-coupling filter (22) emulate the non-linear behavior of the output current of the auxiliary power amplifier (12) and the resulting emulating signal is subtracted from the input signal to said main amplifier (10).
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Citations
24 Claims
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1. A composite amplifier including:
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a main power amplifier and an auxiliary power amplifier, which are connected to a load over a Doherty output network; and
means for emulating and compensating for the non-linear behavior of the output current of said auxiliary power amplifier in the input signal to said main amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 13, 14, 15, 16, 17, 18)
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7. A transmitter including:
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a composite amplifier with a main power amplifier and an auxiliary power amplifier, which are connected to a load over a Doherty output network; and
means for emulating and compensating for the non-linear behavior of the output current of said auxiliary power amplifier in the input signal to said main amplifier. - View Dependent Claims (8, 9, 10, 11, 12, 19, 20, 21, 22, 23, 24)
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Specification