Radiating unit and broadband high-intermodulation omni-directional ceiling antenna

A technology of radiation unit and ceiling antenna, applied in the field of wireless communication, can solve problems such as high cost and low intermodulation, and achieve the effects of low cost, high intermodulation requirements and simple processing

Inactive Publication Date: 2013-04-24
FOSHAN CITY EAHISON COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a radiation unit to overcome the shortcomings of low intermodulation and high cost of conventional radiators, and also provides a broadband high intermodulation omnidirectional ceiling antenna using the radiation unit to realize the height of the omnidirectional ceiling antenna. Intermodulation performance

Method used

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  • Radiating unit and broadband high-intermodulation omni-directional ceiling antenna
  • Radiating unit and broadband high-intermodulation omni-directional ceiling antenna
  • Radiating unit and broadband high-intermodulation omni-directional ceiling antenna

Examples

Experimental program
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Embodiment 1

[0024] Such as figure 1 , figure 2 , image 3 As shown, the radiation unit 1 of this embodiment is a rotating casing integrally made of metal material. The rotating housing is sequentially composed of an arc portion 11 , a cylindrical portion 12 and a conical portion 13 . The taper of the conical part 13 is 4:1, and the diameter D of the bottom surface is 95 mm. The height h of the cylindrical portion 12 was 25 mm. The curvature radius r of the arc portion 11 is 21 mm.

[0025] In this embodiment, at the top end of the conical portion 13, a connecting portion 14 protruding slightly outward is provided, such as figure 2 As shown, a connecting hole 15 is provided in the center of the connecting portion 14 for electrical conduction between the radiation unit 1 and the feeding connector.

Embodiment 2

[0027] Such as Figure 4 As shown, the broadband high intermodulation omnidirectional ceiling antenna of this embodiment includes: a housing 2 , a radiation unit 1 , a reflector 3 , a connection piece 4 and a feed connection piece 5 .

[0028] Wherein, the radiation unit 1 adopts the structure of the first embodiment. The top end of the conical portion 13 of the radiating unit 1 conducts with the inner conductor of the feeding connector 5 . One end of the connecting piece 4 is mechanically connected and conducted with the cylindrical portion 12 of the radiation unit 1 , and the other end of the connecting piece 4 is mechanically connected and conducted with the reflector 3 . Such as Figure 5 As shown, the distance d between the radiation unit 1 and the reflection plate 3 in this embodiment is 5mm.

[0029] The feed connector 5 of this embodiment is composed of a feed screw 51, a feed nut 52, a coaxial cable outer lead 53 and a coaxial cable connection terminal 54 connected...

Embodiment 3

[0031] The difference between this embodiment and Embodiment 2 lies in the structure of the feed connector. Such as Image 6 As shown, the feed connector of this embodiment includes: a connector body 6, the connector body 6 is made of metal, and a flange portion 61 and a coaxial connection portion 62 are arranged on the connector body 6; 6 is provided with an inner conductor 63, and there is an insulating layer 64 between the inner conductor 63 and the connector body 6; one end of the inner conductor 63 protrudes from the flange portion 61; Communicate with the outside world.

[0032] After being assembled on the reflector, the end of the inner conductor 63 protruding from the flange portion 61 will reach the top of the conical portion 13 of the radiating unit 1 , so that the inner conductor 63 can communicate with the radiating unit 1 .

[0033] Tests have shown that the electrical performance indicators of the broadband high-third-order intermodulation omnidirectional ceil...

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PUM

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Abstract

The invention provides a radiating unit which is used for overcoming the defects that a common radiating body is low in intermodulation and high in cost and further provides a broadband high-intermodulation omni-directional ceiling antenna with the radiating unit, and the high-intermodulation performance of the omni-directional ceiling antenna is achieved. The radiating unit is a rotary shell body which is formed by metal materials in an integrated mode. The rotary shell body is sequentially composed of an arc part, a cylinder part and a cone part. The conical degree of the cone part is 4:1-2:1, the diameter of the bottom face is 80mm-130mm, the height of the cylinder part is 25mm-75mm, and the radius of curvature of the arc part is 15mm-35mm. The radiating unit has the advantages of being easy to process, low in cost and capable of achieving the high-intermodulation requirement and the like. The broadband high-intermodulation omni-directional ceiling antenna has the advantages of being wide in a frequency band, low in a standing wave, large in half radiation lobe width, high in gain and the like. The requirement for the long term evolution (LTE) by indoor broadband covering is met, and the purpose of mass production is achieved.

Description

technical field [0001] The invention relates to a radiation unit in the field of wireless communication and a broadband high intermodulation omnidirectional ceiling antenna. Background technique [0002] With the development of antenna technology, antennas have higher and higher requirements for third-order intermodulation. When two or more interference signals are applied to the receiver at the same time, due to the nonlinear effect, the combined frequency of the two interferences sometimes happens to be equal to or close to the frequency of the useful signal and passes through the receiver smoothly, among which the third-order intermodulation is the most serious . At present, the conventional indoor omnidirectional ceiling antenna generally consists of two or more pieces of materials. In practical applications, more materials are used, the production process is cumbersome, and the production efficiency is low; Negative impact, and multi-piece materials need to be solved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q19/10
Inventor 孙耀志曾凡林杨雨泉
Owner FOSHAN CITY EAHISON COMM
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