ANTENNA DEVICE

WIPO Patent Application WO/2005/117204

A1

An antennal device which is of small-sized planar construction, superior in productivity, and capable of forming a main beam tilted from vertical direction to horizontal direction. In this antenna device, an antenna (105) composed of two slot elements (109a, 109b) formed on the surface of a substrate (108) by cutting a copper foil and disposed in parallel, and microstrip lines (110a, 110b) formed of copper foil on the back of the substrate (108) are disposed on the inside bottom surface of a mirror case (103) at a distance (h) spaced from a mirror (104) made of metallic material. The slot elements (109a, 109b) are excited in that a phase difference is produced by microstrip lines (110a, 110b) constituting a T-branch circuit, so as to form a beam tilted from vertical direction to surface direction with respect to the substrate (108) surface under the influence of the mirror (104) operating as a reflecting plate.

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UNO HIROYUKI
SAITO YUTAKA
OTA GENICHIRO
KOYANAGI YOSHIO
EGAWA KIYOSHI

PCT/JP2005/008920

December 08, 2005

May 16, 2005

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MATSUSHITA ELECTRIC IND CO LTD (JP)
UNO HIROYUKI
SAITO YUTAKA
OTA GENICHIRO
KOYANAGI YOSHIO
EGAWA KIYOSHI

B60R21/00; H01Q1/32; H01Q3/24; H01Q3/30; H01Q13/10; H01Q19/10; H01Q21/06; B60R1/12; (IPC1-7): H01Q1/32; B60R21/00; H01Q3/24; H01Q3/30; H01Q13/10; H01Q19/10

JPH02266703A	1990-10-31
JPH11355030A	1999-12-24
JP2003023415A	2003-01-24
JPS623508A	1987-01-09

Washida, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, JP)

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