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:
Apr. 28, 2009
Filed:
Jun. 20, 2005
Ping Hui, Richmond, CA;
Jari Van Wonterghem, Vancouver, CA;
Ping Hui, Richmond, CA;
Jari Van Wonterghem, Vancouver, CA;
Nokia Corporation, Espoo, FI;
Abstract
This invention describes a method for improving isolation between the main antenna (e.g., a GSM antenna) and at least one further antenna (e.g., a BLUETOOTH/WLAN antenna, a diversity antenna, etc.) in an electronic communication device by a floating parasitic element placed between these two antennas for providing an isolation from electro-magnetically coupled currents between these two antennas in a ground plane, wherein the antennas are connected to the ground plane and the parasitic element is floating and electrically isolated from the ground plane. The advantages of the present invention include but are not limited to a more compact placement of antennas and a reduced cost and better reliability compared to an approach involving grounded parasitic elements.