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, 1979
Filed:
Jan. 12, 1978
Applicant:
Inventor:
Paul R Gray, Orinda, CA (US);
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
3072 / ; 333214 ; 328167 ;
Abstract
An active filter employing a plurality of integrators which may be fabricated as a metal-oxide-semiconductor (MOS) integrated circuit is described. S-plane zeros are obtained without additional active devices when compared to prior art filters without such zeros. The zeros result from resistive coupling between the integrators. Resistance ratios and capacitance ratios primarily determine the filter's characteristics rather than the absolute value of these elements. This permits the filter to be readily fabricated with existing MOS technology.