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. 30, 2014
Filed:
Aug. 12, 2011
Vajeed Nimran P a, Bangalore, IN;
Shabbir Amjhera Wala, Bangalore, IN;
Shagun Dusad, Bangalore, IN;
Sandeep Oswal, Bangalore, IN;
Visvesvaraya Appala Pentakota, Bangalore, IN;
Vajeed Nimran P A, Bangalore, IN;
Shabbir Amjhera Wala, Bangalore, IN;
Shagun Dusad, Bangalore, IN;
Sandeep Oswal, Bangalore, IN;
Visvesvaraya Appala Pentakota, Bangalore, IN;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A mixer circuit includes three square wave mixers and a combiner. A first square wave mixer in the circuit multiplies an input signal with a first square wave. A second square wave mixer and a third square wave mixer in the circuit each multiplies the input signal with a second square wave and a third square wave respectively. The second and third square waves have a same frequency as the first square wave, but phases that respectively lead and lag the phase of the first square wave by a first value. The combiner adds the outputs of the mixers. A low-pass filter external to the mixer circuit filters the sum generated by the combiner to generate a filtered output. In an embodiment, the first value equals forty five degrees, and the filtered output is rendered free of products generated by third and fifth harmonics of the first square wave square.