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A Solid-State Plasma-Based Electromagnetic Metasurface Polarization Converter

A plasma and electromagnetic super technology, applied in the field of ion practical technology and microwave devices, can solve the problems of unfavorable integration and chip integrated manufacturing, complex control circuits, etc., and achieve the effect of flexible design, diverse control methods, and wide frequency band coverage

Active Publication Date: 2021-03-16
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But for most cases, once the metasurface structure is fixed, it is difficult to change the working range. In order to obtain a tunable wide circular polarization working range, a large number of lumped components have to be introduced. The control circuit is complicated and is not conducive to integration and chips. Integrated manufacturing

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  • A Solid-State Plasma-Based Electromagnetic Metasurface Polarization Converter
  • A Solid-State Plasma-Based Electromagnetic Metasurface Polarization Converter
  • A Solid-State Plasma-Based Electromagnetic Metasurface Polarization Converter

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Embodiment Construction

[0035]The technical scheme of the present invention is further elaborated below in conjunction with the accompanying drawings and specific embodiments:

[0036] The present invention is based on a solid-state plasma-based electromagnetic metasurface polarization converter. The polarization converter is formed by periodic arrangement of unit structures, and has the following three states. Substrate 10, second layer dielectric substrate 11, top layer metal patch 1, such as figure 1 In the second state, the structural unit includes the bottom metal reflector 12, the first layer of dielectric substrate 10, the second layer of dielectric substrate 11, the top layer of metal patch 1 and the excited solid-state plasma resonance units 2, 3, 4, 5 ,like figure 2 In the third state, its structural unit includes the bottom metal reflector 12, the first layer of dielectric substrate 10, the second layer of dielectric substrate 11, the top layer of metal patch 1, and the vanadium dioxide ...

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Abstract

The invention discloses an electromagnetic super-surface polarization converter based on solid state plasma. The electromagnetic super-surface polarization converter comprises a second dielectric substrate, a first dielectric substrate and an underlying metal reflector plate which are laminated from top to bottom in sequence; and a resonance unit, capable of realizing linear-circular polarizationconversion in an ultra wide band range, consisting of a metal patch, a solid state plasma resonance unit and a vanadium dioxide resonance unit is laminated above the second dielectric substrate. The excited state of the resonance unit composed of the solid state plasma is controlled through an external logic array program, and the phase-change state of a vanadium dioxide area is controlled throughtemperature, so that the linear-circular polarization conversion of the polarization converter in different frequency domain ranges is realized, and the frequency band dynamic control range of circular polarization can stretch over four wave bands such as X wave band, Ku wave band, K wave band and Ka wave band through reasonable parameter optimization.

Description

technical field [0001] The invention relates to the field of solid-state plasma practical technology and microwave device technology, in particular to a controllable ultra-broadband polarization converter based on solid-state plasma and vanadium dioxide. Background technique [0002] Today, it is more and more difficult for online polarized antennas to meet strict requirements. Circularly polarized antennas and polarized converters are used in satellite communication systems, wireless remote sensing systems, WLAN (Wireless Local Area Network), WPAN (Wireless Personal Area Network), GPS (Global Positioning) system) has been rapidly developed in a series of systems. Due to the many advantages of circularly polarized waves, such as reducing the energy loss caused by polarization inconsistency, reducing the interference of rain and fog weather and buildings, etc., the linear-circular polarization conversion technology has been widely used in many military and civilian fields. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/24
CPCH01Q15/244
Inventor 章海锋曾立刘国标黄通
Owner NANJING UNIV OF POSTS & TELECOMM
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