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:
Mar. 02, 2010
Filed:
Apr. 23, 2004
Anders Thornell-pers, Stadigvarande bostad, SE;
Torsten Östervall, Stadigvarande bostad, SE;
Anders Thornell-Pers, Stadigvarande bostad, SE;
Torsten Östervall, Stadigvarande bostad, SE;
Laird Technologies, AB, Kista, SE;
Abstract
A multi-band antenna device for a portable radio communication device has first and second radiating elements (). A controllable switch () is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter () that blocks radio frequency signals is arranged between the feeding portion and the control voltage input. A DC blocking arrangement () is arranged between a grounding portion () on the first radiating element and ground wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.