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:
Jan. 03, 1978
Filed:
Mar. 30, 1976
Ramon P Chambers, Clearwater, FL (US);
David E Sanders, St. Petersburg, FL (US);
Robert S Gordy, Largo, FL (US);
E-Systems, Inc., Dallas, TX (US);
Abstract
A digitized automatic gain controlled amplifier and gain hysteresis circuit is disclosed for preserving a low frequency, low level modulation at the output of an AGC amplifier while also providing for rapid correction of amplifier gain for large variations in the amplifier input signal level. The described amplifier is particularly adapted to satellite communications systems in which ionospheric changes produce rapid power fades and wherein satellite tracking is accomplished by dithering a high-gain antenna on the satellite to produce a low-frequency power amplitude control signal at the input to the AGC amplifier, which control signal is allowed to pass through to a control system while the larger input signal variations are gain-controlled out.