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Low-profile unidirectional radiation microstrip slot antenna array

A technology of microstrip slots and antenna arrays, which is applied in the direction of separately energized antenna arrays, antenna arrays, linear waveguide feeding arrays, etc., can solve the problems of low gain, large influence of material selection, narrow impedance bandwidth, etc.

Pending Publication Date: 2021-06-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has several disadvantages: the impedance bandwidth is very narrow, usually only a few percent; the performance is greatly affected by the material selection of the dielectric substrate; the gain is low, etc.

Method used

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Embodiment Construction

[0039] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] figure 1 It is the overall structure diagram of the present invention. The invention has a three-layer structure, wherein the bottom layer is a reflective surface, the middle layer is a dielectric substrate, and the upper layer is an antenna structure.

[0041] A low-profile unidirectional radiation microstrip slot antenna array, comprising a dielectric substrate, an antenna structure disposed on the upper surface of the dielectric substrate, and a reflective surface covering the lower surface of the dielectric substrate, the dimensions of the dielectric substrate and the reflective surface are consistent;

[0042] The antenna structure is composed of eight antenna array elements connected in parallel in a 2×4 layout;

[0043] The antenna array element is a geometrically symmetrical rectangular microstrip slot antenna, which is compose...

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Abstract

The invention discloses a low-profile unidirectional radiation microstrip slot antenna array which comprises a dielectric substrate, an antenna structure arranged on the upper surface of the dielectric substrate and a reflecting surface covering the lower surface of the dielectric substrate, wherein the dielectric substrate and the reflecting surface are consistent in size; the antenna structure is formed by connecting eight antenna array elements in parallel in a 2 * 4 layout; the antenna array element is a geometrically symmetrical rectangular microstrip slot antenna and is composed of two rectangular metal patches with slots in specific geometrical shapes; each slot is formed by connecting three rectangular slots which are perpendicular to one another end to end; and the geometric shapes of the slots are completely the same and are symmetrical in the antenna array element. According to the invention, in a 5.8 GHz high frequency band, the antenna obtains a unidirectional radiation characteristic and a higher gain in an arraying mode so as to prolong the propagation distance of the antenna; the microstrip slot antenna is used as an array element, so that the antenna has the characteristics of low profile and miniaturization.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a low-profile unidirectional radiation microstrip slot antenna array. Background technique [0002] The ISM frequency band is free and open to use. Because of its openness and freedom, many products and equipment work in this frequency band. Among them, the 5.8GHz frequency band has attracted widespread attention because its performance is significantly better than that of the 2.4GHz frequency band. At present, 5.8GHz can be used for WLAN, Bluetooth, ZigBee, vehicle wireless automatic identification, etc., and has a very wide range of application scenarios. However, due to the high frequency of the 5.8GHz frequency band, its wavelength is relatively short and its diffraction ability is poor, which limits its propagation distance. In order to compensate for the poor propagation capability caused by the wavelength, the antenna working in this frequency b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q21/06H01Q1/00
CPCH01Q21/0037H01Q21/064H01Q1/002
Inventor 杨凌升刘鸿葛小芬翟念宇倪韫姿
Owner NANJING UNIV OF INFORMATION SCI & TECH
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