Title:
チューニング可能な寄生共振器
Document Type and Number:
Japanese Patent JP4680905
Kind Code:
B2
Abstract:
A mobile terminal can include a printed circuit board with a reference voltage conductor, an antenna coupled to the first side of the printed circuit board, and a parasitic resonator coupled to the second side of the printed circuit board. More particularly, the parasitic resonator can be connected to the printed circuit board by first and second couplings, which provide first and second impedances, respectively, between the parasitic resonator and the reference voltage conductor. The impedances can be of different values, and can be provided by discrete impedance components. The resonant frequency of the parasitic resonator can be adjusted by altering the impedances of the first and second couplings.
Inventors:
Vance, Scott Elle.
Application Number:
JP2006522544A
Publication Date:
May 11, 2011
Filing Date:
May 20, 2004
Export Citation:
Assignee:
Sony Ericsson Mobile Communications, AB
International Classes:
H01Q1/38; H01P7/08; H01Q1/24; H01Q19/00
Domestic Patent References:
| JP11031909A | ||||
| JP9326632A | ||||
| JP2002158529A | ||||
| JP2001077611A | ||||
| JP2001308622A | ||||
| JP2003110329A | ||||
| JP2003198410A |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura