Antenna device

Abstract

Abstract PURPOSE:To obtain an antenna device of a simple structure which can be installed easily in an ordinary household with a facilitated control of directivity, by giving an inclination to a reflector of a coupling device or a surface abutting to a setting device to the center axis line and varying the direction of the reflector and the setting position of a radiator by changing the relative position between the coupling device and the setting device. CONSTITUTION:A radiator 14 has an offset type constitution and is set with a deviation to the center axis line of a reflector 11. A coupling device 13 contains a cylindrical main body part 16 having a bottom and a flange part 17. The surfaces at both ends of the part 16 have an inclination to each other centering on the axis line. Both device 13 and reflector 11 abut to the part 17 and the back side of the reflector and are fixed in a body. As a result, it is possible to vary freely the setting angle of the reflector 11 or the setting position of the radiator 14 by means of the surface inclined to the axis line of the device 13 or a setting device 12 which is due to a change of the coupled and fixed position between the reflector 11 and the device 13 or between the devices 12 and 13.

Inventors

• 👤 Shinji Nagaoka
• 👤 永岡　新治

Bibliographic Details