ANTENNA DEVICE AND METHOD FOR ATTACHING THE SAME

• US 20150138022A1
• Filed: 01/09/2013
• Published: 05/21/2015
• Est. Priority Date: 05/08/2012
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Takahashi, Yoshihide
• Granted Patent: US 9,484,617 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/1228 on a boom
• CPC Class Codes: H01Q 1/1242 Rigid masts specially adapted for supporting an aerial
• CPC Class Codes: H01Q 1/22 by structural association with other equipment or articles
• CPC Class Codes: H01Q 1/526 Electromagnetic shields
• CPC Class Codes: H01Q 19/13 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination H01Q19/15 takes precedence
• CPC Class Codes: H01Q 19/132 Horn reflector antennas; Off-set feeding
• CPC Class Codes: Y10T 29/49018 with other electrical component

Abstract

An antenna device includes: a radio device for radio wave transmission; a primary radiator that has a function to radiates radio waves generated by the radio device; a parabolic reflector that reflects the radio waves radiated from the primary radiator; a shroud that shields against unnecessary radiation radio waves among the radio waves radiated from the primary radiator and reflected by the parabolic reflector; and an antenna mounting mechanism that fits the parabolic reflector to an antenna attachment pole. The shroud is arranged so as to cover at least a right and left of the parabolic reflector, the radio device and the primary radiator are arranged inside the shroud, and the antenna mounting mechanism fits the parabolic reflector to the antenna attachment pole so that the antenna attachment pole is located at a lateral center position of the parabolic reflector.

Claims

1. An antenna device comprising:

a radio device for radio wave transmission;

a primary radiator that has a function to radiate radio waves generated by the radio device;

a parabolic reflector that reflects the radio waves radiated from the primary radiator;

a shroud that shields against unnecessary radiation radio waves among the radio waves radiated from the primary radiator and reflected by the parabolic reflector; and

an antenna mounting mechanism that fits the parabolic reflector to an antenna attachment pole, wherein

the shroud is arranged so as to cover at least a right and left of the parabolic reflector,

the radio device and the primary radiator are arranged inside the shroud, and

the antenna mounting mechanism fits the parabolic reflector to the antenna attachment pole so that the antenna attachment pole is located at a lateral center position of the parabolic reflector.

2. The antenna device according to claim 1, wherein

the radio device and the primary radiator are directly coupled to each other, and

the radio device is arranged at a lower inside of the shroud.

3. The antenna device according to claim 2, further comprising a support member that supports the radio device,

wherein the support member is arranged inside the shroud, and thereby the radio device supported by the support member is arranged inside the shroud.

4. The antenna device according to claim 3, wherein the radio device is fixed to the support member, and thereby a waveguide part of the primary radiator directly coupled to the radio device is directed to the parabolic reflector without being twisted.

5. The antenna device according to claim 3, wherein

the antenna mounting mechanism further includes a connection mechanism that is connected to the support member, and

the support member is supported by an inside of the shroud by being connected to the connection mechanism.

6. The antenna device according to claim 1, wherein the parabolic reflector is an offset parabolic reflector.

7. The antenna device according to claim 6, wherein a shape of the offset parabolic reflector is a circle.

8. The antenna device according to claim 6, wherein a shape of the offset parabolic reflector is an ellipse.

9. (canceled)

10. A method for attaching an antenna device, wherein

a shroud is provided so as to cover at least a right and left of a parabolic reflector that reflects radio waves, a radio device for radio wave transmission or for radio wave reception is provided inside the shroud, and a primary radiator that has a function to radiate radio waves generated by the radio device or a function to feed received radio waves to the radio device is provided inside the shroud so that the parabolic reflector reflects the radio waves radiated from the primary radiator to an outside of the antenna device or reflects radio waves from an outside of the antenna device so that the primary radiator receives the radio waves, and

an antenna mounting mechanism that fits the parabolic reflector to an antenna attachment pole is provided in order for the parabolic reflector to be fitted to the antenna attachment pole so that the antenna attachment pole is located at a lateral center position of the parabolic reflector.

11. An antenna device comprising:

a radio device for radio wave reception;

a primary radiator that has a function to feed received radio waves to the radio device;

a parabolic reflector that makes the primary radiator receive radio waves by reflecting the radio waves;

a shroud that shields against radio waves requiring no reception so that the radio waves requiring no reception are not reflected by the parabolic reflector and are not received by the primary radiator; and

an antenna mounting mechanism that fits the parabolic reflector to an antenna attachment pole, wherein

the shroud is arranged so as to cover at least a right and left of the parabolic reflector,

the radio device and the primary radiator are arranged inside the shroud, and

the antenna mounting mechanism fits the parabolic reflector to the antenna attachment pole so that the antenna attachment pole is located at a lateral center position of the parabolic reflector.