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1. (WO2018084889) MISMATCH DETECTION USING REPLICA CIRCUIT

Pub. No.:    WO/2018/084889    International Application No.:    PCT/US2017/016520
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Sat Feb 04 00:59:59 CET 2017
IPC: H03F 3/195
H03F 3/24
H03F 3/213
H03F 1/56
Applicants: PEREGRINE SEMICONDUCTOR CORPORATION
Inventors: NOBBE, Dan William
REEDY, Ronald Eugene
BACON, Peter
CABLE, James S.
Title: MISMATCH DETECTION USING REPLICA CIRCUIT
Abstract:
An apparatus for detecting difference in operating characteristics of a main circuit by using a replica circuit is presented. In one exemplary case, a sensed difference in operating characteristics of the two circuits is used to drive a tuning control loop to minimize the sensed difference. In another exemplary case, several replica circuits of the main circuit are used, where each is isolated from one or more operating variables that affect the operating characteristic of the main circuit. Each replica circuit can be used for sensing a different operating characteristic, or, two replica circuits can be combined to sense a same operating characteristic.