Patent ID: 11864295
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 17:
18. A method of radio frequency signal transmission, the method comprising:
amplifying a radio frequency signal with a multi-mode power amplifier circuit in a first mode, the multi-mode power amplifier circuit including an input stage and a stacked output stage that is coupled to the input stage by way of an inter-stage matching network, the stacked output stage including a transistor stack of two or more transistors arranged in series with each other, and the transistor stack including a transistor biased in a linear mode of operation in the first mode;
biasing the transistor of the transistor stack to operate as a switch for a second mode such that the stacked output stage functions like there is at least one less transistor in the transistor stack in the second mode relative to the first mode;
amplifying the radio frequency signal with the multi-mode power amplifier circuit in the second mode; and
transmitting the radio frequency with an antenna of a packaged module, the antenna being positioned external to a radio frequency shielding structure of the packaged module, and the multi-mode power amplifier circuit being positioned in an interior of the radio frequency shielding structure of the packaged module.