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.

Date of Patent:
Jul. 23, 2002

Filed:

Jun. 29, 2000
Applicant:
Inventors:

Ronald H. Johnston, Calgary, CA;

Tin Chau Choi, Hong Kong, HK;

Edwin Tung, Calgary, CA;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/312 ; H01Q 2/100 ;
U.S. Cl.
CPC ...
H01Q 1/312 ; H01Q 2/100 ;
Abstract

A broadband compact antenna comprises an electric dipole or monopole coupled or connected in parallel to a slot antenna. The slot antenna is composed of a flat, square or rectangular conducting sheet with a slot having a variety of possible shapes including a bow-tie or rectangle. The slot is then fed at the center by a coaxial transmission line with its outer conductor bonded to the sheet. To obtain broadband characteristics and compactness, a dipole or monopole, formed using either wire, flat strips or shapes formed in sheets of metal, is located in close proximity to the center of the slot.


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