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:
Aug. 29, 2006
Filed:
Aug. 19, 2002
Steven M. Mollenkopf, San Diego, CA (US);
Steven M. Mollenkopf, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A transmitterconverts a complex baseband signalhaving I and Q quadrature signal componentsandfor transmission by an antennaAn intermediate frequency based complex-to-real up-converteruses subsampling to convert the complex baseband signalinto a real digital signalhaving digital signal representationsAn intermediate frequency based bandpass filtering digital-to-analog converteruses Delta-Sigma, bandpass techniques to convert the real digital signalinto a first analog signalhaving analog signal representationsA post-conversion bandpass filterisolates and boosts the signal-to-noise ratio of a selected analog signal representationto output a second analog signalhaving a post-filtered selected analog signal representationA tracking bandpass filterfurther bandpasses and up-converts the second analog signalto output a transmittable signalhaving a tracking-filtered selected analog signal representation