The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2013
Filed:
Apr. 30, 2010
Applicant:
Timothy John Ridgers, Bayeux, FR;
Inventor:
Timothy John Ridgers, Bayeux, FR;
Assignee:
ST-Ericsson SA, Plan-les-Ouates, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01); H03C 3/06 (2006.01); H03C 3/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for applying a modulation signal to a phase locked loop comprises filtering the modulation signal to provide a low frequency component and a high frequency for application to respectively the feedback and feedforward paths of a phase locked loop. The high frequency component is scaled by a gain factor before being applied to the feedforward path. The low frequency component is also scaled by a gain factor and applied to the feedforward path. The energy in a common low frequency range of the modulation signal and of the loop error signal is estimated, and the gain factors are modified dependent on the measured energy.