Integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna

A circularly polarized antenna and integrated substrate technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of leakage, low gain, narrow bandwidth of millimeter wave antenna, etc. , the effect of improving energy transmission characteristics

Pending Publication Date: 2019-08-23
YUNNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to: aim at the above existing problems, provide an integrated substrate gap waveguide feeding slot coupling metasurface circularly polarized antenna, which solves the problems of narrow bandwidth, low gain and serious leakage of existing millimeter wave antennas , and this antenna can be applied to the 5G millimeter wave frequency band

Method used

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  • Integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna
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  • Integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna

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Embodiment 1

[0029] Such as figure 1 As shown, the present invention includes a first medium plate 1, a second medium plate 2, a third medium plate 3, and a fourth medium plate 4; the first medium plate 1, the second medium plate 2, the third medium plate 3, The fourth medium plate 4 is pressed together to form a whole. ISGW is the abbreviation of Substrate Integrated Gap Waveguide (SIGW).

[0030] The upper surface of the first dielectric board 1 has periodically arranged corner-cut patches 5 as a radiation structure, and the upper surface of the second dielectric board 2 has a first copper clad layer 7 as an antenna ground.

[0031] Such as figure 2 As shown, the corner-cut patch 5 is formed by symmetrically cutting off two corners on the diagonal on the basis of the square patch, and the cut-off corners are isosceles triangles. The corner-cut patch 5 is obtained by cutting off the same isosceles right-angled triangles on opposite corners of the square patch, and the circular polariz...

Embodiment 2

[0041] As described in Embodiment 1 above, the first dielectric plate 1, the second dielectric plate 2, and the third dielectric plate 3 are made of materials with a dielectric constant of 2.2 and a loss tangent of 0.0009; the fourth dielectric plate 4 is made of a dielectric constant Made of a material with a loss tangent of 4.4 and a loss tangent of 0.02. The overall size of the antenna is 12mm*12mm*0.1.362mm.

[0042] attached image 3 The shown return loss, gain and axial ratio simulation results show that the center frequency of the integrated substrate gap waveguide feeding slot coupling metasurface circularly polarized antenna of the present invention is 28.08GHz, and the -10dB impedance bandwidth is 25.34GHz-30.81GHz, and the absolute bandwidth 5.47GHz, the relative bandwidth is 19.5%, the 3dB axial ratio bandwidth is 28.15GHz-32.28GHz, the absolute bandwidth is 4.13GHz, the relative bandwidth is 14.7%, and the impedance bandwidth in-band gain reaches 8.9dBi-10.35dBi....

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Abstract

The invention discloses an integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna which is composed of four layers of dielectric plates. The upper surface of the first dielectric plate is provided with periodically arranged tangential patches so as to form a radiation structure. The upper surface of the second dielectric plate is provide with a first copperclad layer, and the lower surface is provided with a microstrip feed line in a printing way so as to form a waveguide-like structure to transmit energy. The energy is coupled to the tangential patchesthrough a rectangular slot etched on the first copper clad layer. The third dielectric plate is a blank dielectric plate and used for separating the second dielectric plate from the fourth dielectricplate. Circular patches are printed on the upper surface of the fourth dielectric plate and metal via holes are arranged on the upper surface of the fourth dielectric plate, and the lower surface isprovided with a second copper clad layer so as to form a mushroom-shaped electromagnetic band gap structure together and increase the shielding property of the circuit. The integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna has the characteristics of low profile, wide bandwidth, high gain, easy processing and the like and can be used as a 5G millimeter wave antenna.

Description

technical field [0001] The invention relates to a wireless communication millimeter wave antenna, in particular to an integrated substrate gap waveguide feeding slot coupling metasurface circularly polarized antenna. Background technique [0002] With the development of communication systems, people's requirements for the frequency of devices in the microwave and millimeter wave bands continue to increase. When the traditional microstrip line structure is applied to higher frequencies, greater loss and leakage will occur. [0003] The integrated substrate gap waveguide can better solve the above problems. The structure is based on multi-layer PCB technology, and the microstrip line is encapsulated in the electromagnetic bandgap structure to improve the shielding of the feed network. [0004] In recent years, metasurface structures have been used in antenna design, which can improve the performance of antennas in various aspects, such as expanding bandwidth, increasing gain,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q15/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q15/0086
Inventor 申东娅周养浩袁洪
Owner YUNNAN UNIV
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