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Electromagnetic metasurface-loaded narrow wave beam WLAN AP antenna

An electromagnetic ultra-narrow beam technology, which is applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., can solve the problems of large coverage and beam width, and achieve the effect of narrow beam width, narrow beam width, and increase bandwidth

Active Publication Date: 2018-04-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a broadband dual-polarization narrow-beam WLAN AP antenna by using electromagnetic metasurface loading, so as to overcome the shortcomings of common WLAN AP antenna beam width and excessive coverage in high-density user scenarios

Method used

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  • Electromagnetic metasurface-loaded narrow wave beam WLAN AP antenna

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Embodiment Construction

[0031] The invention provides a WLAN AP antenna with simple structure, small volume, low cost and easy processing, which includes: a dual-polarization prototype WLAN AP antenna, a broadband electromagnetic supersurface coating, a 50Ω coaxial line feed structure and an insulating medium pillar. According to the characteristic that the refractive index of the square ring is proportional to its length within a specific frequency band, the present invention uses square rings of different lengths to form a broadband electromagnetic metasurface cladding, and through the design of the gradient distribution of the refractive index along the center to both sides, it can achieve different propagation The correction of the path electromagnetic wave phase transforms the spherical wave into a plane wave, thereby improving the directivity of the antenna and narrowing the antenna beam width.

[0032] The present invention will be described in further detail below in conjunction with the acco...

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Abstract

The invention discloses an electromagnetic metasurface-loaded narrow wave beam WLAN AP antenna. A circular parasitic patch is loaded above a square radiation patch; the square radiation patch and thecircular parasitic patch are fixed above an antenna grounding plate through an insulating medium supporting column to form an original type WLAN AP antenna; the original type WLAN AP antenna performsfeeding in different positions of the square radiation patch by adopting a 50-<ohm> coaxial line for realizing dual polarization; the WLAN AP antenna disclosed in the invention has the working frequency band of 5.15-5.95GHz and supports the dual polarization working mode; compared with the original type WLANAP antenna, the antenna disclosed in the invention has relatively narrow 3dB wave beam width and relatively high directivity, and the antenna is a dual-polarized narrow wave beam WLAN AP antenna capable of satisfying the use standard of IEEE802.11a / n; and the antenna can be widely applied to WLAN network coverage with indoor high-density user scenario requirement.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an electromagnetic metasurface-loaded narrow-beam WLAN AP antenna. Background technique [0002] At present, for WLAN network coverage in various occasions, a WLAN wireless access point (Access Point: AP) is a key device for wireless access, and has been widely used. In high-density user scenarios such as airport waiting halls and large conference centers, to meet the wireless access requirements of a large number of users, it is usually necessary to deploy a large number of WLAN APs to provide sufficient network capacity. Due to the wide radiation beam of the ordinary WLAN AP antenna, the coverage of a single AP is too wide, and when the two antennas are close to each other, the mutual interference will seriously affect the number of user access and data transmission rate, often resulting in network congestion, user Access is difficult or even impossible, which greatly reduces...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q15/00H01Q15/02H01Q19/06
CPCH01Q1/38H01Q1/50H01Q15/0093H01Q15/02H01Q19/06Y02D30/70
Inventor 黄斌科强启文倪中非
Owner XI AN JIAOTONG UNIV
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