Patent ID: 11949384
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A supply modulator configured to be driven in a tracking mode and provide an output voltage to a power amplifier, the tracking mode being an average power tracking mode or a discrete level-envelope tracking mode, the supply modulator comprising:
a multiple output voltage regulator configured to output a plurality of voltages in the discrete level-envelope tracking mode, the plurality of voltages having different levels from each other, and the different levels respectively corresponding to a plurality of reference output voltage signals;
a switching regulator configured to output a switching regulator voltage, the output voltage being based on the switching regulator voltage and a selected voltage among the plurality of voltages in the discrete level-envelope tracking mode, the output voltage being based on the switching regulator voltage in the average power tracking mode;
a switching regulator controller configured to
sense an output current of the multiple output voltage regulator to obtain a sensing value, and
control the switching regulator based on the sensing value in the discrete level-envelope tracking mode;

a switch array comprising a plurality of switches respectively corresponding to the plurality of voltages, the switch array configured to selectively connect the selected voltage to the power amplifier by performing a switching operation;
a discrete-level controller configured to generate a level control signal based on a digital envelope signal;
a switch controller configured to control the switching operation of the switch array based on the level control signal; and
a main controller configured to
generate the plurality of reference output voltage signals,
determine the tracking mode from among the average power tracking mode and the discrete level-envelope tracking mode, and
control at least one of the multiple output voltage regulator, the switch controller, the switching regulator controller, or the discrete-level controller based on the tracking mode.