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:
Nov. 14, 1995
Filed:
Jul. 21, 1994
Grant H Watkins, Dunkirk, MD (US);
Stephen P Caldwell, Columbia, MD (US);
Westinghouse Electric Corp., Baltimore, MD (US);
Abstract
A large bandwidth communication system has a transmitter to transmit signals over a selectable frequency operating range and a receiver having a first mixer for mixing an LO1 signal with received transmit signals. The receiver has a first IF for processing signals received from the first mixer. A frequency synthesizer generates frequency signals for application to at least a transmit mixer in the transmitter and to at least the first mixer in the receiver. A computer system selects and applies a modified frequency value to at least one of plural frequencies used in the system that of the LO1 signal applied to the first mixer, that of a frequency signal applied to the transmit mixer, and an IF frequency of the first IF, with the modified frequency value selected as a function of the system operating frequency and stored spurious amplitude data so as to sidestep spurious signals in portions of the total system frequency operating bandwidth where spurious amplitudes are excessive and otherwise would interfere with quality reception.