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:
May. 29, 2001
Filed:
Dec. 02, 1996
Adrian David Smith, Paignton, GB;
Paul Clark, Paignton, GB;
Nortel Networks Limited, Quebec, CA;
Abstract
The present invention relates to antennas. One of the problems which arises during operation of antenna arrangements is that spurious signals are emitted from mounting apertures and other surface features associated with a rearwardly facing ground plane, for instance, mounting bolts which couple some of the radiated energy, and through coaxial cable connector ports. The effect of all these unwanted signals is that they will couple with other radiating elements to form intermodulation products. In receive mode these intermodulation signals can severely impair the received signal quality. The present invention provides an antenna assembly comprising a support frame,and individually mounted layered antennas,, wherein an insulator-conductor sheet such as a metallized plastics film,is interposed between the antennas and the support frame. There is also provided a method of manufacturing such a layered antenna and of receiving and transmitting signals by means of a layered antenna of this construction.