Broadband multi-resonant metasurface antenna based on aperiodic square ring structure

A metasurface, non-periodic technology, applied in antennas, slot antennas, antenna grounding devices, etc., can solve the problems of low gain, large volume, high profile, etc., and achieve high gain, stable gain, and improved aperture efficiency

Active Publication Date: 2019-06-14
NANJING UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the application of these traditional technologies for expanding bandwidth is greatly limited due to the disadvantages of high profile and large volume.
Later, Ying Liu et al. proposed a slot-coupled patch antenna. By using two patch antennas of different sizes, multiple resonance points were introduced, so that the bandwidth can be increased to 30%. However, due to the area of ​​the patch antenna Very small, so the gain is very low, only 8dBi under the aperture of 1.5 wavelengths

Method used

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  • Broadband multi-resonant metasurface antenna based on aperiodic square ring structure
  • Broadband multi-resonant metasurface antenna based on aperiodic square ring structure
  • Broadband multi-resonant metasurface antenna based on aperiodic square ring structure

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Embodiment 1

[0031] combine figure 1 , the aperiodic square ring metasurface structure 1 is divided into 16 independent metal square ring metasurface units 2, the calibers of these metasurface units 2 are the same, but the width of the square rings is different; the independent The arrangement of the square ring metasurface units 2 is symmetrical along the horizontal axis and the vertical axis. The square ring metasurface units 2 at different positions have different ring widths, so as to provide different resonant frequency points, thereby Achieve broadband.

[0032] combine image 3 , the square ring width Wr of the square ring metasurface unit 2 is Wr from inside to outside 1 、Wr 2 、Wr 3 , Wr 4 , and Wr 1 2 3 4 . The structural size W of the square ring metasurface unit 2 is 0.03λ, 0.30λ, the range of the ring width Wr is 0.001λ, 0.30λ, and the width g of the narrow slit 8 is 0.001λ, 0.015λ, where λ is a free space wavelength. The dielectric constant ε of the upper dielectric s...

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Abstract

The invention provides a broadband multi-resonant metasurface antenna based on an aperiodic square ring structure. The antenna is composed of dielectric substrates which are arranged in a two-layer stacking mode. The antenna comprises the aperiodic square ring metasurface structure printed on the upper surface of the upper-layer dielectric substrate, a metal floor which is printed on the lower surface of the upper-layer dielectric substrate and provided with a gap, and a feed network printed on the lower surface of the lower-layer dielectric substrate, wherein the metasurface structure is divided into a plurality of metasurface units for mounting of metal square rings, all the metasurface units are arranged in centrosymmetry, narrow gaps are formed between the adjacent metasurface units, and the metasurface units are identical in aperture size but not completely identical in width.

Description

technical field [0001] The invention relates to a broadband multi-resonance antenna technology, in particular to a broadband multi-resonance metasurface antenna based on an aperiodic square ring structure. Background technique [0002] With the development of information technology, wireless communication systems have higher and higher requirements for broadband antennas. Microstrip patch antennas are widely used because of their small size, light weight, low profile, and easy integration, but they have some disadvantages, such as narrow bandwidth and low gain. Therefore, some traditional methods to extend the bandwidth of microstrip antennas have been proposed, such as loading capacitive gap compensation probe feeding, L-shaped probe feeding or stacking patch antennas, etc. However, the application of these traditional technologies for expanding bandwidth is greatly limited due to the disadvantages of high profile and large volume. Later, Ying Liu et al. proposed a slot-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q13/10H01Q15/00
Inventor 陈东旭杨琬琛车文荃周晨昱谷礼政张迎琪
Owner NANJING UNIV OF SCI & TECH
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