Title:
ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP3290475
Kind Code:
B2
Abstract:
PURPOSE: To install two electric characteristics as antennas for base station while a state where a single characteristic is used in a conventional case is held, to reduce a wind-receiving area and to miniaturize/lighten a device.
CONSTITUTION: In the antenna device consisting of radiation elements formed at dielectric substrates and of a reflector, the reflector 11 consists of a central reflector 13, reflected end plates 15a and 15b and rear reflected end plates 16a and 16b, which have opening angles symmetrical to the central reflector 13 in right and left by about 60 degrees. Dielectric substrates where the radiation elements 3a and 3b are formed are erected at the central reflector 13 at the opening angle of about 60 degrees, and they are installed in a cylindrical dome 21. Reflecting rods 31, 32 and 33 are arranged at the outer side of the dome by a fitting means.
Inventors:
Yuko Kato
Norihiko Shimada
Kazuhiro Kosaka
Norihiko Shimada
Kazuhiro Kosaka
Application Number:
JP27831192A
Publication Date:
June 10, 2002
Filing Date:
October 16, 1992
Export Citation:
Assignee:
Denki Kogyo Co., Ltd.
International Classes:
H01Q1/42; H01Q15/18; H01Q19/06; (IPC1-7): H01Q19/06; H01Q1/42; H01Q15/18
Domestic Patent References:
| JP257003A | ||||
| JP1129512A | ||||
| JP6291005A | ||||
| JP2113706A | ||||
| JP46906A | ||||
| JP5259733A | ||||
| JP328811U | ||||
| JP59101510U | ||||
| JP1115316U | ||||
| JP5757617U | ||||
| JP6316707U | ||||
| JP593118U | ||||
| JP33825U |
Attorney, Agent or Firm:
Nao Okuyama (4 outside)