Title:
NARROW WIDTH DUAL/TRI ISM BAND PIFA FOR WIRELESS APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2004034507
Kind Code:
A3
Abstract:
This invention presents new and alternative design techniques of single feed Dual/Tri ISM band PIFA for wireless system applications. To attain the advantages of and in accordance with the purposes of the present invention, dual and/or tri ISM band PIFA antennas are provided. In particular, an antenna comprises at least a ground plane (12), a radiating element (11). A short (14), and a feed tab (13). The short provides a connection between the ground plane and the radiating element. The feed tab connected to the radiating element provides initial impedance match. While the feed tab provides initial impedance match, additional impedance match and frequency control are obtained by the inclusion of one or more of parasitic element (15), a slot (17), tuning stubs (23,24,26), and capacitive elements.
Inventors:
KADAMBI GOVIND R
BATEMAN BLAINE R
VOLKMER MICHAEL G
CUMRO GARY A
HAUSSLER BRADLEY S
BATEMAN BLAINE R
VOLKMER MICHAEL G
CUMRO GARY A
HAUSSLER BRADLEY S
Application Number:
PCT/US2003/031627
Publication Date:
August 25, 2005
Filing Date:
October 06, 2003
Export Citation:
Assignee:
CENTURION WIRELESS TECH INC (US)
International Classes:
H01Q1/24; H01Q5/00; H01Q5/357; H01Q5/378; H01Q9/04; (IPC1-7): H01Q1/42; H01Q1/38; H01Q1/48; H01Q21/12
Foreign References:
| US5420596A | 1995-05-30 | |||
| US6421014B1 | 2002-07-16 | |||
| US6218991B1 | 2001-04-17 | |||
| US6456249B1 | 2002-09-24 |
Other References:
See also references of EP 1576694A4
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