08559907 is referenced by 33 patents and cites 554 patents.

A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering network, and an antenna switch to couple the conditioned PA signal to an antenna. An output signal sensor senses at least a voltage amplitude of the signal switched by the antenna switch, and signals a PA control circuit to limit PA output power in response to excessive values of sensed output. Stacks of multiple FETs in series to operate as a switching device may be used for implementation of the RF front end, and the method and apparatus of such stacks are claimed as subcombinations. An iClass PA architecture is described that dissipatively terminates unwanted harmonics of the PA output signal.

Title
Integrated RF front end with stacked transistor switch
Application Number
13/412463
Publication Number
8559907 (B2)
Application Date
March 5, 2012
Publication Date
October 15, 2013
Inventor
James S Cable
Del Mar
CA, US
Mark L Burgener
San Diego
CA, US
Agent
Martin J Jaquez Esq
Jaquez & Associates
Assignee
Peregrine Semiconductor Corporation
CA, US
IPC
H04B 1/28
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