Title:
移動体通信用ガラスアンテナシステム
Document Type and Number:
Japanese Patent JP2004507192
Kind Code:
A
Abstract:
The present invention provides a glass antenna device for mobile communication with suitable impedance matching for two different frequency bands. In this antenna device, the ends of a substantially straight first radiation antenna pattern and a second radiation antenna pattern are coupled by a coupling pattern that is substantially perpendicular to the first and second radiation antenna patterns. The longitudinal direction of the coupling pattern is arranged substantially in parallel to the ground. The length of the first radiation antenna pattern is different from the length of the second radiation antenna pattern. A rectangular grounding pattern is arranged below this U-shaped antenna pattern. A core conductor of a coaxial cable is connected to the U-shaped antenna pattern, and a braided conductor of the coaxial cable is connected to the grounding pattern. An impedance-adjusting pattern is provided on a lateral portion of the grounding pattern.
Inventors:
Hidetoshi Oka
Application Number:
JP2002521394A
Publication Date:
March 04, 2004
Filing Date:
August 20, 2001
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY,LIMITED
International Classes:
H01Q21/30; H01Q1/12; H01Q1/32; H01Q1/38; H01Q1/48; H01Q5/00; H01Q5/10; H01Q9/38; (IPC1-7): H01Q1/32; H01Q1/48; H01Q5/01; H01Q21/30
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners