Frequency selective surface electromagnetic wave transmission amplitude modulator on basis of graphene

A frequency selective surface and amplitude modulation technology, applied to electrical components, antennas, etc., can solve the problems of regulation effect and practical impact

Active Publication Date: 2019-02-12
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] It can be seen from the above that the existing graphene-based electromagnetic wave amplitude modulation devices are all reflection control, and require electromagne

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  • Frequency selective surface electromagnetic wave transmission amplitude modulator on basis of graphene
  • Frequency selective surface electromagnetic wave transmission amplitude modulator on basis of graphene
  • Frequency selective surface electromagnetic wave transmission amplitude modulator on basis of graphene

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] The invention combines the frequency selective surface with the graphene sandwich structure to realize the dynamic control of the electromagnetic performance of the frequency selective surface electromagnetic wave amplitude modulator, and the voltage used for modulation is very low.

[0021] see figure 1 and figure 2 , is a schematic structural diagram of an embodiment of a graphene-based frequency selective surface electromagnetic wave transmission amplitude modulator of the present inv...

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Abstract

The invention discloses a frequency selective surface electromagnetic wave transmission amplitude modulator on the basis of graphene. The frequency selective surface electromagnetic wave transmissionamplitude modulator comprises a frequency selective surface, a dielectric layer and a graphene sandwich layer. The frequency selective surface, the dielectric layer and the graphene sandwich layer aresequentially arranged in a stacked manner, the graphene sandwich layer comprises an upper graphene thin film layer, a lower graphene thin film layer and an ionic liquid layer, the ionic liquid layeris arranged between the upper graphene thin film layer and the lower graphene thin film layer, and contact electrodes are arranged on the upper graphene thin film layer and the lower graphene thin film layer and are connected with a positive electrode and a negative electrode of a power source. The frequency selective surface electromagnetic wave transmission amplitude modulator has the advantagesthat the frequency selective surface and graphene sandwich structures are combined with one another, accordingly, the electromagnetic properties of the frequency selective surface can be dynamicallyregulated and controlled, and voltages required during regulation and control can be lowered.

Description

technical field [0001] The invention relates to the technical field of target microwave electromagnetic feature regulation and radar stealth, mainly relates to electromagnetic wave space filtering and regulation of transmission amplitude, in particular to a frequency selective surface electromagnetic wave transmission amplitude modulator based on graphene. Background technique [0002] The frequency selective surface is composed of a series of metal structural units arranged periodically, and its shape is various, which can be roughly divided into central connection type, ring type, solid type and composite unit structure. When the frequency of the incident electromagnetic wave is the resonant frequency of the frequency selective surface, it will show a transmission characteristic of total reflection or total transmission, which allows the frequency selective surface to act as a spatial filter to modulate the incident electromagnetic wave. [0003] At present, in order to ac...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0026
Inventor 胡承刚张恒史浩飞邵丽杨俊
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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