Title:
アンテナ構造およびそれを備えた無線通信機
Document Type and Number:
Japanese Patent JP3992077
Kind Code:
B2
Abstract:
A capacitive-power-feeding-type radiating electrode is provided on a dielectric substrate, and the dielectric substrate is provided in a non-ground region of a circuit board. In the non-ground region of the circuit board, a ground line electrically connecting the radiating electrode with a ground electrode of the circuit board is provided. The ground line is shaped so as to have at least one turnback portion. On the ground line, a resonant-frequency adjusting element is arranged so as to shortcut a portion of the ground line. The resonant-frequency adjusting element has a capacitance or inductance so as to adjust a resonant frequency of an antenna structure to a predetermined resonant frequency.
Inventors:
Satoru Hirano
Application Number:
JP2007505312A
Publication Date:
October 17, 2007
Filing Date:
July 08, 2005
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01Q9/14; H01Q1/38
Domestic Patent References:
| JP11312919A | ||||
| JP2005005985A | ||||
| JP2002330018A | ||||
| JP5299927A | ||||
| JP3022416U | ||||
| JP2001332924A | ||||
| JP4114205U | ||||
| JP8222916A |
Attorney, Agent or Firm:
Kiyoshi Igarashi