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:
Oct. 15, 1991
Filed:
May. 30, 1989
Applicant:
Inventors:
William J Rankin, Burnsville, MN (US);
Reed E Holaday, Tuscon, AZ (US);
Assignee:
Holaday Industries, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; H01Q / ; H01Q / ; H04B / ;
U.S. Cl.
CPC ...
343703 ; 343725 ; 343739 ; 324 725 ; 3241 / ; 455 67 ;
Abstract
A broadband frequency meter probe utilizes a high frequency antenna and a low frequency antenna to sense wideband electromagnetic energy wherein the different frequency band antennas are closely based monopole and disk antennas. A three-dimensional probe is disclosed having three mutually orthogonal antenna pairs. Damping is provided to decouple resonance which would otherwise occur between the monopole and disk antenna. Self-checking for sensing operation of associated electronics and for providing an indication of normal and abnormal operating conditions is included.