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Broadband millimeter wave metasurface antenna

A millimeter wave, metasurface technology, applied in antennas, slot antennas, antenna arrays, etc., can solve the problem of less metasurface antennas, and achieve the effect of satisfying high gain and easy expansion

Pending Publication Date: 2021-11-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few inventions of metasurface antennas suitable for millimeter wave communication.
and its impedance bandwidth is often less than 40%

Method used

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  • Broadband millimeter wave metasurface antenna
  • Broadband millimeter wave metasurface antenna
  • Broadband millimeter wave metasurface antenna

Examples

Experimental program
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Embodiment

[0033] Such as figure 1 As shown, the present invention is mainly composed of a substrate-integrated waveguide feeding structure, a coupling slot, and a metasurface antenna; wherein the substrate-integrated waveguide feeding structure is composed of a first dielectric substrate 1 and a first substrate printed on the bottom of the first dielectric substrate 1. The metal structure 4, the second metal structure 5 printed on the top of the first dielectric substrate 1, and the metal through holes 6 distributed on the first dielectric substrate 1 are composed; the metasurface antenna is composed of the prepreg 2, the second dielectric substrate 3, printed on the The third metal structure 8 on the top of the second dielectric substrate 3 is formed. After the energy is fed by the substrate-integrated waveguide, the metasurface antenna is coupled and fed through the slot. The reflection coefficient and gain obtained by the simulation of the broadband millimeter wave metasurface anten...

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Abstract

The invention discloses a broadband millimeter wave metasurface antenna. The antenna comprises a first dielectric substrate, a prepreg, a second dielectric substrate, a first metal structure printed at the bottom of the first dielectric substrate, a second metal structure printed at the top of the first dielectric substrate, a third metal structure printed at the top of the second dielectric substrate, and metal through holes distributed in the first dielectric substrate. A gap groove is etched on the second metal structure, and the center of the gap groove is aligned with the third metal structure; the third metal structure is composed of M*N metal cuboids, and a gap is formed between every two adjacent metal cuboids. According to the invention, from 18.5 GHz to 42.9 GHz, the S11 is less than -10dB, and the corresponding impedance bandwidth is 79%; in a target frequency band, the gain change range of the broadband millimeter wave metasurface antenna is 5.7 dBi to 7.9 dBi.

Description

technical field [0001] The invention relates to the field of electromagnetic metasurface applications, in particular to a broadband millimeter wave metasurface antenna. Background technique [0002] An electromagnetic metasurface is an artificially constructed two-dimensional structure, which is usually composed of periodic arrangements of subwavelength structures. Its subwavelength structure can often bring about different electromagnetic properties than traditional designs. Based on this, more and more progresses on electromagnetic metasurfaces have been reported in recent years. Among them, metasurface antennas are an important branch of electromagnetic metasurface applications. [0003] The most attractive feature of metasurface antennas is their broadband property, which is attributed to the simultaneous excitation of multiple modes such as TM10 mode and antiphase TM20 mode; or TE mode and TM mode. Cooperating with multiple modes, metasurface antennas usually achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/28H01Q5/50H01Q13/10H01Q21/00
CPCH01Q21/0025H01Q5/50H01Q5/28H01Q13/10
Inventor 连继伟丁大志陈如山
Owner NANJING UNIV OF SCI & TECH