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High-gain and low-profile ring slot antenna based on artificial electromagnetic material

A technology of artificial electromagnetic material and loop-slot antenna, which is applied in the field of antennas, can solve the problems of long distance between the antenna and the reflector, high antenna profile, and difficult carrier conformality, etc., and achieves the effects of improving gain, high gain, and widening bandwidth.

Active Publication Date: 2017-02-01
XIDIAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the distance between the antenna and the reflector is relatively long, resulting in a high profile of the antenna, which is not easy to conform to the carrier, and it is difficult to be directly applied to the airborne conformal antenna array.

Method used

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  • High-gain and low-profile ring slot antenna based on artificial electromagnetic material
  • High-gain and low-profile ring slot antenna based on artificial electromagnetic material
  • High-gain and low-profile ring slot antenna based on artificial electromagnetic material

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Embodiment Construction

[0020] The antenna of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 and figure 2 , the present invention includes a radiation unit 1 , an upper dielectric board 2 , a balun 3 , a patch layer 4 , a lower dielectric board 5 and a metal floor 6 . Among them, the upper dielectric plate 2 is a rectangular dielectric material with a dielectric constant of 4.4, a thickness of h0, a long side of L0, and a short side of W0; the radiation unit 1 is located on the upper surface of the upper dielectric plate 2, and the balun 3 is located on the upper dielectric On the lower surface of the plate 2; the lower dielectric plate 5 is a rectangular dielectric material with a dielectric constant of 4.4, a thickness of h00, a long side of L00, and a short side of W00; the patch layer 4 is located on the upper surface of the lower dielectric plate 5, The metal floor 6 is located on the low...

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Abstract

The invention proposes a high-gain and low-profile ring slot antenna based on an artificial electromagnetic material, which is mainly used to solve the problem that the traditional ring slot antenna has a high profile and is not easy to be conformal with a carrier. The antenna comprises a radiation unit (1), an upper medium plate (2), a Balun (Balance-Unbalance) (3), a lower medium plate (5), and a metal floor (6). The radiation unit and the Balun are arranged on the upper and lower surfaces of the upper medium plate respectively. The metal floor is arranged on the lower surface of the lower medium plate. The radiation unit (1) is a rectangular metal plate and is provided with symmetrical open ring structures, and the two open ring structures are connected by a rectangular slot. The upper surface of the lower medium plate is provided with evenly-arranged m*n square units, which form a patch layer (4). The antenna has the advantages of wide band, high gain and low profile, and can be used in a radar system under an airborne platform.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a high-gain and low-profile annular slot antenna, which is suitable for radar systems that need to conform to a carrier. Background technique [0002] In an airborne radar system, in order not to affect the aerodynamic and stealth characteristics of the carrier platform itself, the antenna needs to be conformal to the carrier platform, which requires the antenna to have a low profile height. On the other hand, in order to increase the detection distance of the radar, the antenna unit used must have the characteristic of high gain. The ring slot antenna can be applied to the radar system because of its wide frequency band and high gain. However, the traditional ring slot antenna is bidirectional radiation, and a reflector must be added to realize its directional radiation. The reflector of the traditional ring slot antenna is mostly a flat metal reflector. When the ...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50
Inventor 张立翁子彬崔超弈杜若楠焦永昌
Owner XIDIAN UNIV
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