Antenna device and antenna device control method

Patent metadata

Field	Value
Publication number	US-2016352009-A1
Application number	US-201515115062-A
Country	US
Kind code	A1
Filing date	Jan 30, 2015
Priority date	Feb 17, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

An antenna device ( 100 ) according to the present invention includes a primary radiation means ( 10 ) for guiding and emitting radio waves at transmission, and guiding radio waves at reception, an antenna member ( 20 ) for reflecting radio waves emitted by the primary radiation means ( 10 ) and forming a transmission beam at transmission, and reflecting received waves on the primary radiation means ( 10 ) at reception, an angle adjustment means ( 40 ) for changing a relative angle between the primary radiation means ( 10 ) and the antenna member ( 20 ), an angle calculation means ( 81 ) for calculating the relative angle to be formed between the primary radiation means ( 10 ) and the antenna member ( 20 ) for displacement of an azimuth occurring in the primary radiation means ( 10 ), and a control means ( 82 ) for controlling the angle adjustment means based on the calculated relative angle.

First claim

1 . An antenna device comprising:
a primary radiator for guiding and emitting radio waves at transmission, and guiding radio waves at reception; an antenna member for reflecting radio waves emitted by the primary radiator and forming a transmission beam at transmission, and reflecting received waves on the primary radiator at reception; an angle adjuster for changing a relative angle between the primary radiator and the antenna member; an angle calculator for calculating the relative angle to be formed between the primary radiator and the antenna member for displacement of an azimuth occurring in the primary radiator; and a controller for controlling the angle adjuster based on the calculated relative angle.

2 . The antenna device according to claim 1 , further comprising:
an acceleration detector for detecting acceleration occurring in a housing on which the angle adjuster is mounted, wherein the angle calculator calculates the displacement of the azimuth based on the detected acceleration.

3 . The antenna device according to claim 2 , wherein the acceleration detector is mounted on the housing.

4 . The antenna device according to claim 2 , wherein the angle adjuster rotates the antenna member to change the relative angle to the primary radiator.

5 . The antenna device according to claim 2 , wherein the angle adjuster rotates the primary radiator to change the relative angle to the antenna member.

6 . The antenna device according to claim 2 , wherein the angle calculator calculates the relative angle when the detected acceleration is equal to or greater than a specified threshold.

7 . The antenna device according to claim 2 , wherein the angle calculator samples the detected acceleration for a certain period of time, and calculates an offset value of a zero point of a tilt angle of the housing.

8 . A control method of an antenna device including a primary radiator for guiding and emitting radio waves at transmission, and guiding radio waves at reception, an antenna member for reflecting radio waves emitted by the primary radiator and forming a transmission beam at transmission, and reflecting received waves on the primary radiator at reception, an angle adjuster for changing a relative angle between the primary radiator and the antenna member, an angle calculation means for calculating the relative angle to be formed between the primary radiator and the antenna member for displacement of an azimuth occurring in the primary radiator, and a controller for controlling the angle adjuster based on the calculated relative angle, the method comprising:
calculating the relative angle to be formed between the primary radiator and the antenna member for displacement of an azimuth occurring in the primary radiator; and controlling the angle adjuster based on the calculated relative angle.

9 . The control method of the antenna device according to claim 8 , the antenna device further including an acceleration detector for detecting acceleration occurring in a housing on which the angle adjuster is mounted, the method comprising:
calculating the displacement of the azimuth based on the detected acceleration.

10 . The control method of the antenna device according to claim 9 , wherein the detected acceleration is acceleration occurring in the housing.

Assignees

• Nec Corp

Inventors

• Tanaka Nobuyuki

Classifications

• H01Q19/13

  the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination (H01Q19/15 takes precedence) · CPC title

• H01Q15/16

  curved in two dimensions [2D], e.g. paraboloidal · CPC title

• H01Q3/20 Primary

  wherein the primary active element is fixed and the reflecting device is movable · CPC title

• H01Q1/1257

  using the received signal strength · CPC title

• H04W88/08

  Access point devices · CPC title