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:
May. 22, 1984
Filed:
Jun. 12, 1979
Applicant:
Inventors:
Edwin C Lafferty, Lynchburg, VA (US);
James H Gibson, Lynchburg, VA (US);
Assignee:
General Electric Company, Lynchburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D / ; H03K / ;
U.S. Cl.
CPC ...
455214 ; 455337 ; 329134 ; 329137 ; 307513 ;
Abstract
A frequency modulation receiver uses a low intermediate frequency (IF) signal for good image frequency rejection. The intermediate frequency signal is discriminated (or demodulated) after amplitude limiting the intermediate frequency signal by doubling the limited signal and providing pulses whose average value represents the modulating information. The pulses are applied to a low pass filter which rejects the doubled frequency signal relatively easily.