Dynamic Operating Bandwidth Configuration for an Envelope Tracker

A method comprising:

• in user equipment:
• transmitting first information according to a selected communication standard;
• determining a new transmit operating parameter for subsequently transmitting second information;
• in response to the new transmit operating parameter, determining a power supply configuration modification;
• and
• implementing the power supply configuration modification prior to transmitting the second information.

A system comprising:

• a baseband controller;
• a memory comprising a power supply configuration parameter library;
• an envelope tracking power supply operable to:
• receive envelope tracking signals;
• and
• output a power supply voltage signal that approximates the signal envelope;
• a power amplifier operable to receive the power supply voltage signal and drive an antenna with a transmit signal characterized by a current bandwidth;
• where:
• the baseband controller is operable to:
• receive through the antenna a bandwidth allocation message from a network controller;
• determine a new bandwidth at which to transmit through the antenna from the bandwidth allocation message;
• search the power supply configuration parameter library for a power supply configuration that increases efficiency at the new bandwidth;
• program the envelope tracking power supply with the power supply configuration;
• and
• transmit at the new bandwidth after programming the envelope tracking power supply.