Multimode amplifier for operation in linear and saturated modes
First Claim
1. A multimode power amplifier configured to receive an RF input signal and provide an RF output signal in linear and saturated operating modes, said multimode power amplifier comprising:
- an output stage configured to receive a fixed supply voltage and to provide said RF output signal;
at least one driver stage coupled to said output stage, said at least one driver stage configured to receive said RF input signal and an adjustable supply voltage;
wherein said adjustable supply voltage controls an RF output power of said RF output signal when said multimode power amplifier is in said saturated operating mode; and
wherein said adjustable supply voltage is controlled by a fixed control voltage when said multimode power amplifier is in said linear operating mode.
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Accused Products
Abstract
According to an exemplary embodiment, a multimode power amplifier configured to receive an RF input signal and provide an RF output signal in linear and saturated operating modes includes an output stage configured to receive a fixed supply voltage and to provide the RF output signal. The multimode power amplifier further includes at least one driver stage coupled to the output stage, where the at least one driver stage is configured to receive the RF input signal and an adjustable supply voltage. The adjustable supply voltage controls an RF output power of the RF output signal when the multimode power amplifier is in the saturated operating mode. The at least one driver and the output stage are each biased by a low impedance voltage in the linear and saturated operating modes. The adjustable supply voltage can be controlled by a fixed control voltage in the linear operating mode.
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Citations
18 Claims
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1. A multimode power amplifier configured to receive an RF input signal and provide an RF output signal in linear and saturated operating modes, said multimode power amplifier comprising:
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an output stage configured to receive a fixed supply voltage and to provide said RF output signal; at least one driver stage coupled to said output stage, said at least one driver stage configured to receive said RF input signal and an adjustable supply voltage; wherein said adjustable supply voltage controls an RF output power of said RF output signal when said multimode power amplifier is in said saturated operating mode; and wherein said adjustable supply voltage is controlled by a fixed control voltage when said multimode power amplifier is in said linear operating mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An amplification module comprising:
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a multimode power amplifier comprising at least one driver stage and an output stage, said output stage receiving a fixed supply voltage; said multimode power amplifier being configured to receive an RF input signal and provide an RF output signal in linear and saturated operating modes; a regulator providing an adjustable supply voltage to said at least one driver stage; wherein said adjustable supply voltage controls an RF output power of said RF output signal when said multimode power amplifier is in said saturated operating mode; and wherein said adjustable supply voltage is controlled by a fixed control voltage when said multimode power amplifier is in said linear operating mode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification