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:
Sep. 12, 1995
Filed:
Jun. 01, 1994
Norihito Kinoshita, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An automatic gain control apparatus includes a variable gain amplifier 5 to amplify a signal with an amplification factor and a gain controller 6 to control the amplification factor of the variable gain amplifier 5. A gain limiter 7 is provided for restricting the magnitude of the amplification factor within a predetermined range. The amplification factor therefore does not vary largely, even immediately after the input signal level is suddenly changed due to a switching of a transmitter antenna or a carrier frequency. Thus, it is possible to quickly respond to the change of input signal without requiring a large dynamic range in the circuit following the automatic gain control apparatus.