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. 03, 1987
Filed:
Oct. 01, 1984
Applicant:
Inventors:
Rinaldo Graziadei, Monza, IT;
Michaelango Lorusso, Carbonara, IT;
Assignee:
SGS Microelettronica S.p.A., Agrate, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455253 ; 455249 ; 455326 ; 455332 ; 455333 ; 330254 ; 330284 ; 332 / ;
Abstract
The input stage of a radio receiver incudes a differential amplifier circuit, whose gain is adjusted by a voltage generated by an AGC circuit, and a mixer circuit. An attenuator stage with a predetermined attenuation coefficient is coupled between the input terminal of differential circuit and the input terminal of the mixer circuit. When the level of the input signal increases beyond a given value, the differential amplifier circuit is deactivated and the signal reaches the mixer circuit through the attenuator stage.