Patent · US Active

System and method for RF spur cancellation

US8817925B2 · kind B2 · utility

4Cited by

5References

20Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Paul J. Husted · San Jose, US
Michael Mack · San Diego, US
Srenik Mehta · San Francisco, US

Key dates

Filing date	Mar 16, 2012
Grant date	Aug 26, 2014
Priority date	—
Expiry date	Jul 10, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04B15/06
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

This disclosure is directed to a wireless device with a suppressor that couples to the aggressor signal of a frequency source to generate a cancelling signal for suppressing spurs resulting from operation of the frequency source. The amplitude and phase delay of the cancelling signal are adjusted to optimize the cancellation of the spur. Preferably, a calibration routine is performed to establish appropriate delay and amplitude values to cancel the spurs occurring at each device gain setting.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.