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. 16, 2003
Filed:
Jul. 20, 2000
Brian Creed, Batavia, IL (US);
David J. Smentek, Addison, IL (US);
William C. Hart, Huntley, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A loop filter and amplifier ( ) is configured to generate a control voltage (V ) by applying low gain to a correction voltage (V ) in response to an input signal (V ) indicating that the VCO ( ) is to operate at low frequencies and applying high gain to the correction voltage in response to the input signal indicating that the VCO is to operate at high frequencies. A loop filter and amplifier ( ) is configured to generate a control voltage (V ) by shifting the control voltage by an amount determined by an offset voltage (V ) and by adjusting the control voltage with a correction voltage (V ). An operational amplifier ( ) is configured to generate a difference between the amount determined by the offset voltage and the correction voltage.