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:
Oct. 30, 1984
Filed:
Sep. 10, 1982
Applicant:
Inventors:
Rinaldo Graziadei, Monza, IT;
Michelangelo Lorusso, Carbonara, IT;
Assignee:
SGS-ATES Componenti Elettronici S.p.A., Brianza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455333 ; 455253 ; 455332 ; 332 / ;
Abstract
A transistor mixer and amplifier input stage which includes a mixer and a differential amplifier whose gain is controlled by a voltage generated by an AGC circuit. Two transistors, each having a resistor connected in series with its emitter, are connected between the inputs of the differential amplifier and the mixer. When the level of the input signal increases beyond a given level, the two transistors begin to conduct, thereby shunting the differential amplifier.