Communication device

• US 10,270,176 B2
• Filed: 08/16/2016
• Issued: 04/23/2019
• Est. Priority Date: 05/10/2016
• Status: Active Grant

• Current Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Original Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Inventors: Hsu, Chieh-Sheng, Jan, Cheng-Geng
• Primary Examiner(s): Levi, Dameon E
• Assistant Examiner(s): Alkassim, Jr., Ab Salam
• Application Number:
  US15/237,964
• Publication Number:
  US 20170331194A1
• Time in Patent Office: 980 Days
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 11/14 with parts bent, folded, shaped or screened or with phasing impedances, to obtain desired phase relation of radiation from selected sections of the antenna or to obtain desired polarisation effect H01Q11/20 takes precedence
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H01Q 19/106 using two or more intersecting plane surfaces, e.g. corner reflector antennas
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00
• CPC Class Codes: H01Q 9/44 with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions combinations of two or more active elements H01Q21/00; turnstile antennas H01Q21/26

Abstract

A communication device includes an antenna system, a metal base, and a metal elevating pillar. The antenna system at least includes a dual-polarized antenna and a reflector. The reflector is configured to reflect radiation energy from the dual-polarized antenna. The metal elevating pillar is coupled between the antenna system and the metal base, and is configured to support the antenna system.

Claims

1. A communication device, comprising:

an antenna system, comprising a first dual-polarized antenna and a first reflector, wherein the first reflector is configured to reflect radiation energy from the first dual-polarized antenna;

a metal base; and

a metal elevating pillar, coupled between the antenna system and the metal base, and configured to support the antenna system;

wherein a distance between the first reflector and the first dual-polarized antenna is slightly longer than 0.25 wavelength of an operation frequency band,

wherein a bottom surface of the antenna system has a circumscribed circle with a first radius, the metal base has a circular shape with a second radius, and a height of the metal elevating pillar is linearly related to a ratio of the second radius to the first radius;

wherein the height of the metal elevating pillar is calculated according to the following equation;

2. The communication device as claimed in claim 1, wherein the first reflector has a pyramidal shape with a wide top opening and a narrow bottom plate, and the wide top opening of the first reflector faces the first dual-polarized antenna.

3. The communication device as claimed in claim 2, wherein the wide top opening of the first reflector has a relatively large square shape, and the narrow bottom plate of the first reflector has a relatively small square shape.

4. The communication device as claimed in claim 1, wherein the first dual-polarized antenna comprises a first dipole antenna element and a second dipole antenna element, and the first dipole antenna element and the second dipole antenna element are perpendicular to each other.

5. The communication device as claimed in claim 4, wherein the first dipole antenna element and the second dipole antenna element are diamond-shaped dipole antenna elements.

6. The communication device as claimed in claim 1, wherein the first dual-polarized antenna covers the operation frequency band from 1850 MHz to 2690 MHz.

7. The communication device as claimed in claim 4, wherein the antenna system further comprises a first metal plate for balancing radiation gain of the first dipole antenna element and the second dipole antenna element, and the first dual-polarized antenna is positioned between the first metal plate and the first reflector.

8. The communication device as claimed in claim 7, wherein the first metal plate has a square shape, a circular shape, or an equilateral triangular shape.

9. The communication device as claimed in claim 7, wherein a length or a width of the first metal plate is shorter than 0.5 wavelength of an operation frequency band of the first dual-polarized antenna.

10. The communication device as claimed in claim 1, wherein the antenna system further comprises a second dual-polarized antenna and a second reflector, the second reflector is configured to reflect radiation energy from the second dual-polarized antenna, and the second dual-polarized antenna is disposed opposite to or adjacent to the first dual-polarized antenna.

11. The communication device as claimed in claim 10, wherein the antenna system further comprises a second metal plate, and the second dual-polarized antenna is positioned between the second metal plate and the second reflector.

12. The communication device as claimed in claim 10, wherein the antenna system further comprises a third dual-polarized antenna, a fourth dual-polarized antenna, a third reflector, and a fourth reflector, the third reflector is configured to reflect radiation energy from the third dual-polarized antenna, and the fourth reflector is configured to reflect radiation energy from the fourth dual-polarized antenna.

13. The communication device as claimed in claim 12, wherein the antenna system further comprises a third metal plate and a fourth metal plate, the third dual-polarized antenna is positioned between the third metal plate and the third reflector, and the fourth dual-polarized antenna is positioned between the fourth metal plate and the fourth reflector.

14. The communication device as claimed in claim 12, wherein the first dual-polarized antenna, the second dual-polarized antenna, the third dual-polarized antenna, and the fourth dual-polarized antenna are arranged symmetrically with respect to their central point, and each of them covers a 90-degree spatial angle.

15. The communication device as claimed in claim 12, wherein the antenna system is a beam switching antenna assembly for selectively using one of the first dual-polarized antenna, the second dual-polarized antenna, the third dual-polarized antenna, and the fourth dual-polarized antenna to perform signal reception and transmission.

16. The communication device as claimed in claim 1, wherein a top area of the metal elevating pillar is the same as a bottom area of the antenna system.