Enclosure for radio, parabolic dish antenna, and side lobe shields

• US 10,186,786 B2
• Filed: 11/10/2017
• Issued: 01/22/2019
• Est. Priority Date: 03/06/2013
• Status: Active Grant

• Current Assignee: Mimosa Networks, Inc. (Airspan Networks Inc.)
• Original Assignee: Mimosa Networks, Inc. (Airspan Networks Inc.)
• Inventors: Hinman, Brian L., Miller, Wayne, Ramos, Carlos
• Primary Examiner(s): Williams, Howard
• Application Number:
  US15/809,942
• Publication Number:
  US 20180083365A1
• Time in Patent Office: 438 Days
• Field of Search: None
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• 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 19/19 comprising one main concave reflecting surface associated with an auxiliary reflecting surface
• CPC Class Codes: H01Q 19/191 wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds
• CPC Class Codes: H01Q 21/00 Antenna arrays or systems arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00

Abstract

Enclosures for radios, parabolic dish antennas, and side lobe shields are provided herein. A dish antenna includes a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, and a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity.

Claims

1. A dish antenna, comprising:

a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, the side lobe shield being configured to reduce transmission of side lobe radiation, as well as reduce receipt of side lobe radiation emitted by adjacent radiation generating devices; and

a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity.

2. The dish antenna according to claim 1, wherein the dish antenna is manufactured as a monolithic structure.

3. The dish antenna according to claim 1, further comprising a radio associated with the dish antenna.

4. The dish antenna according to claim 1, further comprising a printed circuit board assembly that generates signals that are directed through a wave guide that is disposed in a center of the dish antenna, wherein the printed circuit board assembly is disposed in the rear cavity in such a way that the printed circuit board assembly and the wave guide are placed in close proximity to the parabolic circular reflector.

5. The dish antenna according to claim 4, wherein the parabolic circular reflector includes an annular mounting ring and the wave guide is received within the annular mounting ring.

6. The dish antenna according to claim 5, wherein the wave guide is tubular and extends along the longitudinal axis of the dish.

7. The dish antenna according to claim 6, further comprising a circular dielectric plate configured to mate with the wave guide in such a way that the dielectric plate is spaced apart from an upper surface of the dish antenna.

8. The dish antenna according to claim 7, further comprising a reflector dish that is disposed on top of the dielectric plate.

9. The dish antenna according to claim 8, further comprising a radome cover that encloses the reflector dish, dielectric plate, and wave guide within a front cavity of the dish antenna formed by the upper surface of the dish antenna and the side lobe shield, wherein the radome cover mates with the side lobe shield.

10. The dish antenna according to claim 1, wherein the dish antenna comprises the rear cavity that receives a printed circuit board assembly, the printed circuit board assembly comprising the radio.

11. The dish antenna according to claim 10, further comprising a back cover that encloses the printed circuit board assembly within the rear cavity.

12. The dish antenna according to claim 11, further comprising a heat spreader that is coupled to the printed circuit board assembly.

13. The dish antenna according to claim 1, wherein the front cavity is provided with a metallic coating.

14. The dish antenna according to claim 1, further comprising a microwave absorbing material that coats an inner surface of the side lobe shield.

15. The dish antenna according to claim 1, further comprising a series of fins that extend upwardly from the sidewall of the rear cavity along an underside of the parabolic circular reflector.

16. A dish antenna, consisting of:

a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, the side lobe shield being configured to reduce transmission of side lobe radiation, as well as reduce receipt of side lobe radiation emitted by adjacent radiation generating devices; and

a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity, all manufactured as a monolithic structure.