Title:
アンテナ装置および通信端末装置
Document Type and Number:
Japanese Patent JP5505581
Kind Code:
B1
Abstract:
A multiband-capable antenna device readily controlling frequency characteristics is provided. The antenna device includes a loop-shaped radiation element 11 having one end as a power feed end and the other end as a ground end; and a matching circuit configured to include a first inductance element L1 loaded at the power feed end and a second inductance element L2 loaded at the ground end and magnetic-field coupled to the first inductance element L1. The loop-shaped radiation element 11 is configured to resonate in a plurality of resonance modes including an even mode and an odd mode. The first inductance element L1 and the second inductance element L2 are wound and connected such that magnetic fields are mutually strengthened for one of the even mode and the odd mode, and that the magnetic fields are mutually weakened for the other of the even mode and the odd mode.
Inventors:
Kenichi Ishizuka
Hiroshi Nishida
Hiroshi Nishida
Application Number:
JP2013557695A
Publication Date:
May 28, 2014
Filing Date:
August 26, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01Q1/50; H01Q7/00; H01Q9/30
Domestic Patent References:
| JP2013207438A | 2013-10-07 | |||
| JP2003051705A | 2003-02-21 | |||
| JP2009206975A | 2009-09-10 |
Foreign References:
| WO2012153690A1 | 2012-11-15 | |||
| WO2010104179A1 | 2010-09-16 | |||
| WO2012099085A1 | 2012-07-26 |
Attorney, Agent or Firm:
Fukami patent office