Title:
RECEPTION ANTENNA
Document Type and Number:
Japanese Patent JP2618143
Kind Code:
B2
Abstract:
PURPOSE: To obtain the reception antenna in a preferable form from the standpoint of the scenery of a house and its balance with less factor of a reception interference such as wind pressure, snow deposition or stacked dust or the like.
CONSTITUTION: The antenna is provided with a couple of metallic plates 16, 17 and lots of balls 19 each having a reception coil 20 in its inside, the lots of the balls are inserted between a couple of the metallic plates 16, 17 and one plate 17 of the metallic plates is moved freely in the plate face direction with respect to the other metallic plate 16 so that the direction of the reception coil 20 of each ball 19 is adjusted variably by making each ball in rolling contact between the metallic plates 16 and 17. Plural fixed coils 31 tilted toward the outside are provided over the entire circumference around the metallic plates 16, 17, and the antenna is provided with a metallic plate movement means moving the one metallic plate 17 in the direction of a fixed coil 31 with a maximum reception gain among the fixed coils 31 till the reception gain of the reception coil 20 is maximized.
Inventors:
Hiroshi Takera
Application Number:
JP30505191A
Publication Date:
June 11, 1997
Filing Date:
November 20, 1991
Export Citation:
Assignee:
Kubota Corporation
International Classes:
H01Q1/42; H01Q3/00; H01Q11/02; H01Q21/06; (IPC1-7): H01Q3/00; H01Q1/42; H01Q11/02; H01Q21/06
Domestic Patent References:
| JP538546A | ||||
| JP2130114U | ||||
| JP6454404U |
Attorney, Agent or Firm:
Toshio Yasuda
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