Antenna unit with high cross polarization ratio, antenna and communication base station

An antenna unit, communication base station technology, applied in the direction of antenna, resonant antenna, electrical short antenna, etc.

Pending Publication Date: 2021-08-06
苏州硕贝德创新技术研究有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a high cross-polarization ratio antenna unit, antenna and communication base station to solve the problem of how to increase the cross-polarization ratio of the antenna in a limited space without increasing additional costs

Method used

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  • Antenna unit with high cross polarization ratio, antenna and communication base station
  • Antenna unit with high cross polarization ratio, antenna and communication base station
  • Antenna unit with high cross polarization ratio, antenna and communication base station

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Embodiment Construction

[0030] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The embodiment of the present application is described by taking a patch antenna as an example, mainly because the patch antenna (patch antenna) has a simple structure, low cost, and small loss. Therefore, it is favored in many application scenarios. However, since the radiation mode of the patch antenna belongs to the slot mode, when dual-polarized feeding is performed, its polarization is impure, resulting in relatively poor cross-polarization of this type of antenna.

[0032] In order to better understand the cross-polarization ratio of the antenna, we first study how the cross-polarization ratio is measured and calculated when the antenna is placed at ±45°. Due to the 45° position of the ante...

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Abstract

The invention discloses an antenna unit with a high cross polarization ratio, an antenna and a communication base station. The antenna unit with the high cross polarization ratio comprises an upper radiation sheet, a lower radiation sheet and a feed network; the upper radiation sheet is arranged right above the upper radiation sheet in parallel; the output end of the feed network is connected with the lower radiation sheet; the lower radiation sheet is coupled with the upper radiation sheet through air; the upper radiation sheet and the lower radiation sheet are rectangular, circular and polygonal; the sizes of the upper radiation sheet and the lower radiation sheet are set according to the size of the antenna; extending patches are symmetrically arranged at the two ends of the upper radiation sheet, the shapes of the extending patches are set according to the application scene of the antenna, the sizes of the extending patches are set according to the frequency band of the antenna, and the extending patches are used for improving the cross polarization ratio in the axial direction. By adopting the scheme, the cross polarization ratio of the antenna is effectively improved by improving the current distribution, the structure is simple, and the cost is lower.

Description

technical field [0001] The present application relates to the technical field of mobile communication antennas, in particular to an antenna unit with a high cross-polarization ratio, an antenna and a communication base station. Background technique [0002] With the rapid development of wireless communication, the requirements for communication systems continue to increase, resulting in continuous shortage of communication resources. Studies have shown that designing communication systems using the orthogonal polarization characteristics of electromagnetic waves can enable dual-polarization systems to obtain higher communication system capacity. In order to increase the communication system capacity and reduce the impact of multipath fading, diversity technology is widely used. Diversity technology is a powerful receiving technology in communication base station antennas that can greatly improve the performance of wireless links with a relatively low-cost investment. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/42H01Q9/04H01Q1/24
CPCH01Q1/246H01Q1/38H01Q1/42H01Q9/0428
Inventor 汤小俊俞斌谭冠南张凯
Owner 苏州硕贝德创新技术研究有限公司
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