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:
May. 04, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventors:
Gary K Montress, Glastonbury, CT (US);
Thomas W Grudkowski, Glastonbury, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ;
U.S. Cl.
CPC ...
333154 ; 333166 ; 333196 ;
Abstract
A SAW signal processor (20) includes a plurality of FET taps (30-32) having individually programmable source-drain bias (42-44) which controls both the amplitude and phase of the mixing efficiency of internal product mixing of the waves passing beneath the tap, in dependence upon the amplitude and polarity of the bias, the sources (34) of the taps may be interconnected so as to provide a summation of correlation at the output (40). The gates (35) of each of the taps are ohmically isolated, thereby to mitigate intertap interaction. The invention is a direct improvement over U.S. Pat. No. 4,207,546.