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:
Mar. 09, 2010
Filed:
Jul. 29, 2005
Richard A. Johnson, Buda, TX (US);
James M. Nohrden, Lakeway, TX (US);
Scott T. Dupuie, Lakeway, TX (US);
Andrew W. Dornbusch, Austin, TX (US);
Richard A. Johnson, Buda, TX (US);
James M. Nohrden, Lakeway, TX (US);
Scott T. Dupuie, Lakeway, TX (US);
Andrew W. Dornbusch, Austin, TX (US);
Other;
Abstract
A receiver () includes a direct digital frequency synthesizer (), a mixer (), and a clock source (). The direct digital frequency synthesizer has an input terminal for receiving a first clock signal at a first frequency, and an output terminal for providing a digital local oscillator signal synchronously with the first clock signal. The mixer () has a first input terminal for receiving a radio frequency (RF) signal, a second input terminal coupled to the output terminal of the direct digital frequency synthesizer (), and an output terminal for providing an IF signal having a spectrum centered about a selectable one of a plurality of center frequencies. The clock source () has an output terminal for providing the first clock signal without using a harmonic frequency that overlaps the spectrum for the plurality of center frequencies.