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. 18, 2001
Filed:
Oct. 29, 1999
Applicant:
Inventors:
Jiening Ao, Suwanne, GA (US);
Herman A. Kruse, Winder, GA (US);
Assignee:
Scientific-Atlanta, Inc., Lawrenceville, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 ;
U.S. Cl.
CPC ...
H03G 3/20 ;
Abstract
A communication system (,) includes amplifiers (,) having an improved thermal response. The amplifiers (,) include a Bode circuit (,) for attenuating the signals and a thermal compensation circuit (,) for adjusting the gain in response to changes in temperature. The thermal compensation unit (,) provides a non-linear impedance to offset for the non-linear performance of the amplifiers gain versus control current. The thermal compensation unit (,) has circuit paths that are selectively turned on to provide the non-linear relationship of impedance versus input control voltage.