Abstract: Multi-mode power amplifier systems are described. In certain embodiments, a multi-mode power amplifier system includes a power amplifier having at least a first mode and a second mode. An output matching network is coupled to an output of the power amplifier with a first section. The output matching network having a second section that includes at least an inductor, a capacitor, and a switch. The switch configured to include the capacitor in an output matching impedance for the power amplifier in the first mode and to not include the capacitor in the output matching impedance for the power amplifier in the second mode.

Abstract: Multi-mode power amplifier systems are described. In certain embodiments, a multi-mode power amplifier system shares a power amplifier chain for different communication modes, where the power amplifier chain has a split output matching network with a first power amplifier transistor and a second power amplifier transistor. A bias circuit biases the power amplifier such that the first power amplifier transistor and the second power amplifier transistor are on in a first mode, and the first power amplifier transistor is on and the second power amplifier transistor is off in a second mode.

Abstract: Multi-mode power amplifier systems are described. In certain embodiments, a multi-mode power amplifier system shares a power amplifier chain for different communication modes. A power amplifier amplifies a radio frequency signal in at least a first mode and a second mode. An output matching network is coupled to an output of the power amplifier, and a bias circuit provides a reference current with a first reference current level to the power amplifier in the first mode and a second reference current level to the power amplifier in the second mode, the multi-mode power amplifier system configured to adjust a power amplifier signal path for the second mode relative to the first mode.

Abstract: A power amplifier module that includes a power amplifier having a plurality of amplifier gain stages, a memory device including a plurality of memory locations, and a controller to receive a control signal having at least one of a first state and a second state. The plurality of memory locations includes at least one first memory location to store a first set of configuration parameters for operation in a first mode, and at least one second memory location to store a second set of configuration parameters for operation in a second mode. The controller configures the power amplifier module in the first mode based on the first set of configuration parameters responsive to receiving the control signal having the first state and configures the power amplifier module in the second mode based on the second set of configuration parameters responsive to receiving the control signal having the second state.

Abstract: A power amplifier module that includes a power amplifier having a plurality of amplifier gain stages, a memory device including a plurality of memory locations, and a controller to receive a control signal having at least one of a first state and a second state. The plurality of memory locations includes at least one first memory location to store a first set of configuration parameters for operation in a first mode, and at least one second memory location to store a second set of configuration parameters for operation in a second mode. The controller configures the power amplifier module in the first mode based on the first set of configuration parameters responsive to receiving the control signal having the first state and configures the power amplifier module in the second mode based on the second set of configuration parameters responsive to receiving the control signal having the second state.