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:
Feb. 13, 1990
Filed:
May. 01, 1989
Barry W Herold, Boca Raton, FL (US);
Omid Tahernia, Coconut Creek, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A frequency synthesizer which includes at least one phase lock loop operative in a selected loop bandwidth state includes a dynamically programmable control circuit for setting the frequency range of its selected loop bandwidth state. In another aspect, the frequency synthesizer may include a plurality of phase lock loop circuits; and a common bias circuit programmably operative to generate at least one bias signal which is coupled commonly to the plurality of phase lock loop circuits for setting a common frequency range for the loop bandwidth states of all of the phase lock loop circuits. In still another aspect, the frequency synthesizer includes a phase lock loop circuit; and a bias circuit programmably operative to generate at least one bias signal which is coupled to the phase lock loop circuit for setting a reference frequency range of the loop bandwidth states thereof, the phase lock loop circuit being dynamically programmable to vary the frequency range settings of the loop bandwidth states in relation to the reference frequency range set by the bias circuit.