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Patent Searching and Data


Title:
PLANE ANTENNA
Document Type and Number:
Japanese Patent JPH04239207
Kind Code:
A
Abstract:

PURPOSE: To receive both the left-hand and the right-hand polarized waves.

CONSTITUTION: A radiation circuit board 1 and a power supply circuit board 2 are respectively laminated on a ground conductor board 3 through a special layer 4. On the radiation circuit board 1, plural aperture elements 5 for circular polarized wave are formed. The power is supplied while feeders 6 in power supply circuit boards 2 are electromagnetically coupled with the circular polarized wave aperture elements 5 respectively. Two aperture elements 5 for circular polarized wave adjacent each other in a constant direction are coupled. The direction of the respective aperture elements 5 for circular polarized wave is made different by 90°. The power is supplied from the feeders 6 to the above- mentioned two aperture elements 5 for circular polarized wave while providing a 90° phase difference with the aperture elements 5 for circular polarized wave. The radiation circuit board 1 is slided by the space of the aperture elements 5 for circular polarized wave in the above-mentioned constant direction by means of a solenoid 7. Thus, the aperture elements 5 for circular polarized wave to be coupled are changed as well as the direction of the polarized wave is switched while changing the power supply.


Inventors:
OKUNO KANAME
UJIYAMA IWAKUNI
TSUKAMOTO KATSUYA
ABIKO TOSHIO
Application Number:
JP238291A
Publication Date:
August 27, 1992
Filing Date:
January 14, 1991
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H01P1/10; H01Q3/00; H01Q13/16; H01Q21/06; H01Q21/22; H01Q21/24; (IPC1-7): H01P1/10; H01Q3/00; H01Q13/16; H01Q21/06; H01Q21/22; H01Q21/24