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:
May. 15, 2001
Filed:
Apr. 04, 1997
Brian Todd Kelley, Delray Beach, FL (US);
Luis Augusto Bonet, Southlake, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A mixer (,) including a transformation circuit (,) is used for frequency converting a first digital signal (,), sampled at a first sampling rate and operating at a first frequency, to a second digital signal (,) operating at a desired frequency. The transformation circuit (,) is adapted to modify and filter the first digital signal (,) to eliminate unwanted frequencies in the first digital signal (,) and to alter the first sampling rate of the first digital signal (,) by a predetermined factor to generate a modified and filtered first digital signal (,) operating at a second sampling rate and the first frequency. The transformation circuit (,) is further adapted to mix the modified and filtered first digital signal (,) with a predetermined injection signal (,) to generate the second digital signal (,) operating at the desired frequency and the second sampling rate.