A graphene-based amplitude modulator for frequency-selective surface electromagnetic wave transmission
A frequency selective surface, amplitude modulation technology, applied in electrical components, antennas and other directions, can solve problems such as control effect and practical impact
Active Publication Date: 2021-03-12
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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 electromagnetic coupling between the metal base plate and the frequency selective surface to achieve frequency selection, and its control effect and practicability are greatly affected.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| width | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a graphene-based frequency selective surface electromagnetic wave transmission amplitude modulator, which comprises a frequency selective surface, a dielectric layer and a graphene sandwich layer arranged sequentially from top to bottom, wherein the graphene sandwich layer includes An upper graphene film layer and a lower graphene film layer, and an ionic liquid layer arranged between the upper graphene film layer and the lower graphene film layer, and the upper graphene film layer and the lower graphene film layer Contact electrodes are respectively arranged on the layers, and the contact electrodes on the upper graphene film layer and the lower graphene film layer are respectively connected to the positive pole and the negative pole of the power supply. By combining the frequency selective surface with the graphene sandwich structure, the present invention not only realizes the dynamic control of the electromagnetic properties of the frequency selective surface, but also reduces the voltage required for the control.
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
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