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:
Jan. 27, 1987
Filed:
Nov. 20, 1985
Applicant:
Inventors:
Gary Baldwin, Palo Alto, CA (US);
Robert B Hallgren, Ithica, NY (US);
Thomas Hornak, Portola Valley, CA (US);
Fred H Ives, Veradale, WA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307352 ; 307572 ; 307577 ;
Abstract
A low distortion differential sampler circuit implemented in GaAs is provided. The sampler circuit constitutes an on/off switching circuit rather than a sample and hold circuit. Elimination of the holding capacitor results in shorter switching times and reduced error. The sampler implements a differential, balanced architecture which compensates for clock signal feed through. The sampler circuit includes a three-stage, AC coupled GaAs pre-amplifier which provides a complementary clock signal to drive the sampler and sets the DC levels.