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. 17, 2004
Filed:
Dec. 29, 1998
Martin Stevens Smith, Chelmsford, GB;
Anton Keith Bush, Cambridge, GB;
Nortel Networks Limited, St. Laurent, CA;
Abstract
The present invention relates to a communications antenna structure. The communications antenna structure comprises first and second antennas each having an axis about which a mode of electrical field vector polarisation can be generated. In a first orientation, with an axis associated with the structure vertical, the first antenna operates in a horizontal mode of electrical field vector polarisation and the second antenna operates in a vertical mode of electrical field vector polarisation; and, in a second orientation, with said structure axis horizontal, the first antenna operates in a vertical mode of electrical field vector polarisation and the second antenna operates in a horizontal mode of electrical field vector polarisation.