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. 26, 1997
Filed:
Sep. 08, 1995
Thomas B Manuel, Santa Cruz, CA (US);
Condor Systems, Inc., San Jose, CA (US);
Abstract
An apparatus and method of homodyne reception includes power divider circuitry for providing first and second signals from an input signal. Oscillator circuitry generates first and second oscillator signals. The first signal and second oscillator signal are mixed and the second signal and the second oscillator signal are mixed in first and second modulator circuitry, respectively, to provide first and second mixed signals which are further mixed together in image reject mixer circuitry. Amplifiers are used to amplify one of the signals before it is mixed with an oscillator signal and to amplify one of the mixed signals before it is mixed with the other mixed signal in the image reject mixer circuitry. In each of the mixing steps of the preferred embodiment is a filter which filters out spurs in the signals. Another embodiment of the homodyne receiver of the present invention is a multiple channel homodyne receiver comprising a plurality of RF channels, a common lower sideband conversion channel and a common offset oscillator assembly.