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. 05, 1985
Filed:
Feb. 10, 1983
Applicant:
Inventor:
Sheldon S Sandler, Lexington, MA (US);
Assignee:
Geo-Centers, Inc., Newton Upper Falls, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343807 ; 343740 ; 343873 ;
Abstract
A broad band dipole antenna of short length is formed by two tubular linear radiators which are spaced apart at their adjacent inner ends. Each of the radiators is encased in an electrically insulative sleeve and the antenna is liquid loaded along its length by a jacket of conductive fluid disposed between the insulative sleeve and an insulative tubular housing surrounding the radiators. The dipole is center-fed and each of the radiators, at its outer end, terminates in a connection to one end of a lumped resistive load whose other end is connected to a conductive disk that is in contact with the conductive liquid.