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. 01, 2009
Filed:
Aug. 30, 2006
Applicants:
Thomas Stoll, Hohenems, AT;
Peter Widerin, Hoerbranz, AT;
Inventors:
Thomas Stoll, Hohenems, AT;
Peter Widerin, Hoerbranz, AT;
Assignee:
Wipro Limited, Bangalore, Karnataka, IN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A signal downconverter having a pair of passive double sideband mixers for receiving quadrature RF signals and mixing the same with local oscillator driving signals to provide mixed differential signals. The mixed differential signals are fed to a differential difference feedback amplifier high frequency ripples are eliminated and finally providing a down converted output signal.