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Dual-polarization broadband high-isolation microstrip antenna

A high-isolation, microstrip antenna technology, applied in antenna unit combinations with different polarization directions, antennas, antenna coupling, etc., can solve the problems of high gain, small size, low sidelobe, etc., and achieve simple structure and wide frequency band Wide, the effect of increasing the isolation

Active Publication Date: 2015-04-15
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, dual-polarized antennas in the wireless LAN frequency band can achieve high isolation, low sidelobes, high gain and small size at the same time.

Method used

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  • Dual-polarization broadband high-isolation microstrip antenna
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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] see figure 1 , the antenna of the present invention has a three-layer structure, the bottom is the ground plate 1, the top of the ground plate 1 is the lower dielectric plate 2 and the upper dielectric plate 3, and the lower dielectric plate 2 and the upper dielectric plate 3 are FR4 dielectric substrates. The distance between the ground plate 1 and the lower dielectric board 2 is 2 mm, the distance between the upper and lower dielectric boards is 2 mm, and the thickness of the dielectric board is 0.5 mm. Among them, there are two horn-shaped guide structures 14 with ridges arranged symmetrically in the middle of the two-layer dielectric board. The horn-shaped guide structures 14 with ridges are composed of horizontal and vertical ridges 15. There are two additional longitudinal ridges on the exterior.

[0030] see figure 2 , the size of the antenn...

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Abstract

The invention relates to a dual-polarization broadband high-isolation microstrip antenna. The microstrip antenna comprises an earth plate, a lower medium plate and an upper medium plate which are arranged at intervals in a parallel manner, wherein the earth plate and the lower medium plate are connected with each other through a coaxial feed inner conductor probe; two lower radiation patches are arranged in parallel on the upper surface of the lower medium plate, and are connected with each other through a 180-degree phase-shifting microstrip line; a microstrip line is led out upwards from the 180-degree phase-shifting microstrip line to be connected with an upper feed port; a lower feed port is formed, below the 180-degree phase-shifting microstrip line, in the surface of the lower medium plate; the lower feed port is connected with corner cutting microstrip connecting lines led out from the lower parts of the two lower radiation patches through an impedance transformer; the upper medium plate comprises upper radiation patches arranged in correspondence with the two lower radiation patches; a ridge trumpet-shaped guiding structure with an upward opening is arranged among the lower radiation patches and the upper radiation patches. The microstrip antenna has the advantages of being dual-polarization, broad in band and high in isolation.

Description

technical field [0001] The invention relates to a dual-polarization microstrip antenna, in particular to a dual-polarization wide-band high-isolation microstrip antenna, which is especially suitable for 5.2GHz wireless local area network. Background technique [0002] The IEEE802.11a standard corresponds to the wireless local area network (WLAN) with a frequency range of 5.15-5.825GHz, because its data transmission rate (72Mbps) is much higher than the data transmission rate (11Mbps) corresponding to the IEEE802.11b standard with a frequency range of 2.4-2.4835GHz Therefore, there is a potential broad demand for research and development of wireless LAN antennas working in the 5.15-5.825GHz frequency band. [0003] Microstrip antennas are widely used for their small size, simple structure, and easy integration. Dual-polarized antenna is a new type of antenna technology, which mainly uses polarization diversity technology, which can effectively deal with multipath attenuation...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q19/02H01Q21/24
Inventor 周宇香鄢泽洪樊芳芳张天龄费冬亮范彬彬朱战发杨晓强王金辉
Owner XIDIAN UNIV
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