Patent ID: 11870397
Assignee: MEDIATEK INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 14:
15. A method of envelope tracking (ET) power supply in a device; the device comprising a radio frequency (RF) module, an envelope tracking module (ETM), a first power amplifier (PA) and a second PA; the RF module comprising a plurality of transmitters, an ET output and an ET multiplexer; each transmitter of the plurality of transmitters comprising an ET port; the ET multiplexer being coupled between the ET output and said ET ports of the plurality of transmitters; the ETM supplying power according to signal obtained from the ET output; the plurality of transmitters including a first transmitter and a second transmitter which comprise a first ET port and a second ET port respectively; and the method comprising:
during a first time interval, by the first transmitter, providing a first RF signal to the first PA to be amplified, and providing a first ET signal, which reflects an envelope of the first RF signal, to the first ET port; and, by the ET multiplexer, relaying the first ET port to the ET output to cause the ETM to supply the first PA according to the first ET signal; and
during a second time interval, by the second transmitter, providing a second RF signal to the second PA to be amplified.