Title:
開口型スロットPIFAアンテナ及び調整方法
Document Type and Number:
Japanese Patent JP2006525691
Kind Code:
A
Abstract:
A method of independently modifying the <1>/4 and/or the <3>/4 wavelength resonant frequency in an open-ended slotted PIFA antenna, an open-ended slotted PIFA antenna comprising an antenna feed (109, 110) and an antenna ground wherein the antenna ground is associated with the antenna short-circuit end, and an open-ended slot having an open-end associated with the antenna open-circuit end (108), and wherein the antenna ground and the slot (104) are mutually arranged to provide operational variations in the current density between the open and short circuit ends of the antenna and around the perimeter of the slot, and an operational mean current path length between the open and short circuit ends of the antenna and around the perimeter of the open-ended slot, the mean current path length determining the <1>/4 and <3>/4 wavelength resonant frequencies for the open-ended slotted PIFA antenna, the method comprising determining operational variations in current density around the perimeter of a pre-modified open-ended slotted PIFA antenna and modifying the mean current path length around the perimeter of the pre-modified open-ended slot in regions of comparatively high current density.
Inventors:
One Han Yang
Tsang Kin
Tsang Kin
Application Number:
JP2006500123A
Publication Date:
November 09, 2006
Filing Date:
April 23, 2004
Export Citation:
Assignee:
NOKIA CORPORATION
International Classes:
H01Q5/00; H01Q1/24; H01Q1/38; H01Q5/357; H01Q5/40; H01Q9/04; H01Q13/08; H01Q13/10; H01Q13/16
Attorney, Agent or Firm:
Kawamori Mitsunori