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:
Mar. 16, 1982
Filed:
Apr. 10, 1980
Applicant:
Inventors:
Stephen H Kelley, Austin, TX (US);
Henry Wurzburg, Tempe, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
375 26 ; 375 34 ; 375 60 ; 328162 ;
Abstract
A sampled data system having improved (sin X)/X correction is provided. A modified switched capacitor filter is used as a receive filter. The switched capacitor filter is modified in a manner to provide a charge gain thereby avoiding the increase in thermal noise normally associated with voltage gain amplification. The modified switched capacitor filter does not impair the dynamic range of the system and can be made duty cycle independent by providing additional controllable switches to the filter.