Non-periodic digital envelope tracking for power amplifiers

An electronic device, comprising:

• a power amplifier;
• and
• a processor operably coupled to the power amplifier and configured to cause the electronic device to:
• set a default digital envelope tracking (DET) level in a DET level module of a Faster-than-Symbol Power Tracking (FSPT) module;
• receive in-phase and quadrature (IQ) baseband data in an input signal using the FSPT module;
• calculate an input signal amplitude using the DET level module of the FSPT module based on the received IQ baseband data;
• process the IQ baseband data using a low power search (LPS) module of the FSPT module to produce an LPS output;
• generate a DET signal using a DET decision module of the FSPT module based on the input signal amplitude and the LPS output, the DET decision module configured to use non-periodic DET to generate the DET signal;
• and
• provide the DET signal to a supply modulator to drive the power amplifier.

A non-transitory computer-readable medium comprising program code, that when executed by at least one processor of an electronic device, causes the electronic device to:

• set a default digital envelope tracking (DET) level in a DET level module of a Faster-than-Symbol Power Tracking (FSPT) module;
• receive in-phase and quadrature (IQ) baseband data in an input signal using the FSPT module;
• calculate an input signal amplitude using the DET level module of the FSPT module based on the received IQ baseband data;
• process the IQ baseband data using a low power search (LPS) module of the FSPT module to produce an LPS output;
• generate a DET signal using a DET decision module of the FSPT module based on the input signal amplitude and the LPS output, the DET decision module configured to use non-periodic DET to generate the DET signal;
• and
• provide the DET signal to a supply modulator to drive a power amplifier.