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:
Dec. 26, 2006
Filed:
Nov. 02, 2001
Jui-kuo Juan, Coral Springs, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Frederick J. Martin, Plantation, FL (US);
David E. Bockelman, Dripping Springs, TX (US);
Jui-Kuo Juan, Coral Springs, FL (US);
Robert E. Stengel, Pompano Beach, FL (US);
Frederick J. Martin, Plantation, FL (US);
David E. Bockelman, Dripping Springs, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A delay locked loop frequency synthesizer in several embodiments uses a primary delay line element () and one or more secondary delay elements (). In one embodiment, a main delay line () is used to coarsely select a frequency output while a secondary delay element (), either passive or active, is used to increase the resolution of the primary delay line (). In the passive embodiment, a coarse and fine frequency selection is possible by selecting components from the output taps of the main delay line () as a driving signal for the passive secondary delay element () to provide the coarse adjustment and selecting an output from the secondary delay element () to provide the fine selection.