Invention Grant
US07671815B2 Antenna device and portable radio communication device comprising such an antenna device
有权
包括这种天线装置的天线装置和便携式无线电通信装置
- Patent Title: Antenna device and portable radio communication device comprising such an antenna device
- Patent Title (中): 包括这种天线装置的天线装置和便携式无线电通信装置
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Application No.: US10553899Application Date: 2004-04-23
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Publication No.: US07671815B2Publication Date: 2010-03-02
- Inventor: Anders Thornell-Pers , Torsten Östervall
- Applicant: Anders Thornell-Pers , Torsten Östervall
- Applicant Address: SE Kista
- Assignee: Laird Technologies, AB
- Current Assignee: Laird Technologies, AB
- Current Assignee Address: SE Kista
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: SE0301200 20030424
- International Application: PCT/SE2004/000629 WO 20040423
- International Announcement: WO2004/095633 WO 20041104
- Main IPC: H01Q1/24
- IPC: H01Q1/24 ; H01Q5/00

Abstract:
A multi-band antenna device for a portable radio communication device has first and second radiating elements (10, 20). A controllable switch (30) 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 (40) that blocks radio frequency signals is arranged between the feeding portion and the control voltage input. A DC blocking arrangement (50) is arranged between a grounding portion (14) 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.
Public/Granted literature
- US20060262015A1 Antenna device and portable radio communication device comprising such an antenna device Public/Granted day:2006-11-23
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