Title:
RADIO COMMUNICATION APPARATUS
Document Type and Number:
Japanese Patent JP2005086632
Kind Code:
A
Abstract:
To provide a radio communication apparatus in which the reliability of communication is enhanced by obtaining the optimum antenna gain.
A cellular phone 1 is equipped with circuit boards 4, 5 having ground parts 14, 15. An antenna 6 is provided and land patterns 41, 42 are formed on a non-ground part 11 of the circuit board 4. Then, coil components 21, 22 are connected between the ground part 14 and the land patterns 41, 42 and metal plates 31, 32 are connected between the land pattern 41, 42 and the ground part 15. At this time, the antenna gain is enhanced by differentiating inductance values of the coil components 21, 22 and appropriately setting them.
Inventors:
YAMAKI TOMONAO
Application Number:
JP2003318096A
Publication Date:
March 31, 2005
Filing Date:
September 10, 2003
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
H01Q1/48; H01Q1/24; H04B1/38; H04M1/02; (IPC1-7): H04B1/38; H01Q1/24; H01Q1/48; H04M1/02
Attorney, Agent or Firm:
Takakazu Tsukahara