Apparatus and method for a tunable multi-mode multi-band power amplifier module

A method for amplifying a signal for use in a wireless network, the method comprising:

• outputting, by a power amplifier, the signal at an output power;
• identifying a desired value for the output power of the power amplifier;
• selecting a bias setting for the power amplifier from a plurality of bias settings based on the desired value for the output power of the power amplifier;
• controlling the output power of the power amplifier based on the bias setting for the power amplifier;
• setting a number of a plurality of immittance elements in a tunable matching network (TMN) operably connected the power amplifier based on the bias setting of the power amplifier;
• and
• causing, using a switch, when the switch is set, the signal to bypass the power amplifier.

A power amplifier module for amplifying a signal in a mobile station, the amplifier module comprising:

• a first power amplifier configured to amplify the signal;
• a second power amplifier configured to output the signal at an output power;
• a first tunable matching network (TMN) operably connected to an output of the first power amplifier and an input of the second power amplifier;
• a second TMN operably connected to an output of the second power amplifier;
• an envelope modulator configured to control a bias setting for the second power amplifier;
• a switch positioned on a path between the input and the output of the second power amplifier;
• a storage device configured to store a plurality of bias settings of the second power amplifier and a plurality of settings for the first TMN and the second TMN;
• and
• a controller operably connected to the envelope modulator, the first and second TMNs, the switch, and the storage device, wherein the controller is configured to identify a desired value for the output power of the second power amplifier, identify the bias setting and the settings for the first TMN and the second TMN from the storage device based on the desired value for the output power, control the output power of the second power amplifier by modifying the bias setting, and set a number of immittance elements in the first and second TMN based on the bias setting.