Multi-frequency array antenna

• US 10,243,278 B2
• Filed: 06/22/2016
• Issued: 03/26/2019
• Est. Priority Date: 12/23/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Xiao, Weihong, Wang, Naibiao, Xie, Guoqing
• Primary Examiner(s): Dinh, Trinh
• Application Number:
  US15/189,883
• Publication Number:
  US 20160301144A1
• Time in Patent Office: 1,007 Days
• Field of Search: None
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/061 Two dimensional planar arrays
• 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 5/42 using two or more imbricated arrays H01Q5/49 takes precedence
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

The present application provides a multi-frequency array antenna. The multi-frequency array antenna includes at least one dual-polarized low frequency subarray (21) and at least one dual-polarized high frequency subarray (22), where the dual-polarized low frequency subarray (21) and the dual-polarized high frequency subarray (22) are arranged, within a same radome (23), in parallel along an axial direction (24) of the multi-frequency array antenna, the dual-polarized low frequency subarray includes at least two types of dual-polarized low frequency radiation unit pairs (211), and each of the dual-polarized low frequency radiation unit pairs includes at least four low frequency radiation units. In this structure, effective working regions of the multiple low frequency radiation units in each dual-polarized low frequency radiation unit pair cover a larger area, and therefore diameter utilization of the dual-polarized low frequency radiation unit pair is higher, and a gain of the low frequency subarray is higher.

Claims

1. A multi-frequency array antenna, comprising:

a radome;

at least one dual-polarized high frequency subarray within the radome and arranged in parallel along an axial direction of the multi-frequency array antenna; and

at least one dual-polarized low frequency subarray within the radome, arranged in parallel along the axial direction of the multi-frequency array antenna, and comprising at least two different types of dual-polarized low frequency radiation unit pairs;

wherein each of the dual-polarized low frequency radiation unit pairs comprises at least four low frequency radiation units, and the at least two different types of dual-polarized low frequency radiation unit pairs comprise;

(a) a first type, where a unit pair has two C-shaped structures facing away from each other; and

(b) a second type, where a unit pair has two C-shaped structures facing towards each other.

2. The multi-frequency array antenna according to claim 1, wherein the low frequency radiation units in the at least two different types of dual-polarized low frequency radiation unit pairs are arranged in different alignments.

3. The multi-frequency array antenna according to claim 2, wherein the at least two different types of dual-polarized low frequency radiation unit pairs are alternately arranged along the axial direction of the multi-frequency array antenna.

4. The multi-frequency array antenna according to claim 1, wherein the dual-polarized low frequency radiation unit pair comprises four L-shaped low frequency radiation units.

5. The multi-frequency array antenna according to claim 1, wherein a quantity of the dual-polarized high frequency subarrays is two.

6. The multi-frequency array antenna according to claim 5, wherein the dual-polarized high frequency subarrays are symmetric about an axis of the multi-frequency array antenna.

7. The multi-frequency array antenna according to claim 1, wherein a quantity of the dual-polarized high frequency subarrays is three.

8. The multi-frequency array antenna according to claim 1, wherein a quantity of the dual-polarized high frequency subarrays is four.

9. The multi-frequency array antenna according to claim 8, wherein the dual-polarized high frequency subarrays are symmetric about an axis of the multi-frequency array antenna.