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:
Apr. 23, 2013
Filed:
Dec. 16, 2011
Geetha B. Nagaraj, Coral Springs, FL (US);
Nicholas G. Cafaro, Coconut Creek, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Sumit A. Talwalkar, Plantation, FL (US);
Geetha B. Nagaraj, Coral Springs, FL (US);
Nicholas G. Cafaro, Coconut Creek, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Sumit A. Talwalkar, Plantation, FL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A synthesizer comprises a first processing unit that receives digital information relating to a required final frequency of the synthesizer and determines a primary frequency value and a corresponding frequency multiplier mode. A primary synthesizer receives the primary frequency value and an external reference frequency signal to generate a signal of the primary frequency. The synthesizer further comprises a second processing unit that receives the primary frequency value, determines a pre-charge voltage value corresponding to the primary frequency value, and transmits the pre-charge voltage value to a delay locked loop in response to a change in the primary frequency value. The delay locked loop receives the signal of primary frequency and the pre-charge value. The DLL is pre-charged to the pre-charge voltage value for a predetermined time, by opening and closing the delay locked loop to obtain fast locking of the synthesizer.