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:
Feb. 04, 1997
Filed:
Sep. 26, 1994
Applicant:
Inventor:
Stephen P Hubbell, Gig Harbor, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
324248 ; 324244 ; 324260 ; 505846 ;
Abstract
A magnetic field sensor which can be used as an active antenna is disclosed that is capable of small size, ultrawideband operation, and high efficiency. The sensor includes a multiplicity of magnetic field transducers, e.g., superconducting quantum interference devices (SQUIDs) that are electrically coupled in a serial array. Dummy SQUIDs may be used about the perimeter of the array, and electrically coupled to the active SQUIDs for eliminating the edge effects on the active SQUIDs. A magnetic flux transformer may be used in combination with a feedback assembly for increasing the sensitivity and linear dynamic range of the active antenna.