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:
Apr. 01, 1986
Filed:
Jun. 22, 1984
Applicant:
Inventor:
Michael F Tompsett, Summit, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330-9 ; 330 51 ; 330107 ;
Abstract
In a semiconductor integrated circuit comprising an amplifier for detecting the presence of a carrier on an incoming wave signal, in order to suppress dc offset in the incoming wave and at the same time minimize any inherent input amplifier offset, the amplifier is supplied with a switched capacitor input network connected between a first input terminal of the amplifier and a circuit input terminal for receiving an incoming signal, and with a switched capacitor feedback network connected between an output terminal of the amplifier and a second (opposite polarity) input terminal of the amplifier.