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. 05, 1991
Filed:
Oct. 25, 1988
Applicant:
Inventors:
Eric W Strid, Portland, OR (US);
Bernard W Leake, Beaverton, OR (US);
Assignee:
Cascade Microtech, Inc., Beaverton, OR (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324613 ; 324612 ;
Abstract
Method and apparatus for simultaneously measuring noise power of a two-port device under test (DUT) using a one-port tuner, a low-noise amplifier, a power divider with a plurality of outputs, and a plurality of noise meters. The noise meters are configured to measure available noise power in different frequency ranges which are closely spaced around a selected central frequency, thereby yielding the noise parameters of the DUT at the central frequency.