Title:
PLANAR ANTENNA
Document Type and Number:
Japanese Patent JP2005136573
Kind Code:
A
Abstract:
To provide a planar antenna suitable for circular polarized wave communication.
The planar antenna is provided with a loop-like antenna filament 3, a first capacitive coupling filament 1 connected to the antenna filament 3 and extending to the inside of the antenna filament 3 which are provided on a dielectric substrate, and a second capacitive coupling filament 2 connected to the antenna filament 3 and extending to the inside of the antenna filament 3. In this antenna, a first opening end 1a and a second opening end 2a are capacitively coupled so as to be close, and the first and second opening ends 1a and 2a forms a closest part in that the first and second capacitive coupling filaments 1 and 2 are close to each other.
Inventors:
KAGAYA OSAMU
OSHIMA KIYOSHI
IGAWA KOJI
OSHIMA KIYOSHI
IGAWA KOJI
Application Number:
JP2003368701A
Publication Date:
May 26, 2005
Filing Date:
October 29, 2003
Export Citation:
Assignee:
ASAHI GLASS CO LTD
International Classes:
H01Q1/38; H01Q1/22; H01Q7/00; (IPC1-7): H01Q7/00; H01Q1/22; H01Q1/38