09197194 is referenced by 19 patents and cites 491 patents.

Methods and apparatuses for use in tuning reactance are described. Open loop and closed loop control for tuning of reactances are also described. Tunable inductors and/or tunable capacitors may be used in filters, resonant circuits, matching networks, and phase shifters. Ability to control inductance and/or capacitance in a circuit leads to flexibility in operation of the circuit, since the circuit may be tuned to operate under a range of different operating frequencies.

Title
Methods and apparatuses for use in tuning reactance in a circuit device
Application Number
13/595893
Publication Number
9197194 (B2)
Application Date
August 27, 2012
Publication Date
November 24, 2015
Inventor
David Kovac
Arlington Heights
IL, US
Cheryl V Liss
Merrimack
NH, US
Tero Tapio Ranta
San Diego
CA, US
Dan William Nobbe
Crystal Lake
IL, US
Ronald Eugene Reedy
San Diego
CA, US
Agent
Alessandro Steinfl Esq
Martin J Jaquez Esq
Jaquez Land Richman
Assignee
Peregrine Semiconductor Corporation
CA, US
IPC
H01F 21/12
H03H 7/01
H03H 7/38
H03H 11/28
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