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Metasurface-based random waveform generator and setting method

A metasurface, arbitrary waveform technology, applied in the microwave field, can solve the problem of ignoring the modulation of amplitude, and achieve the effect of reducing occlusion

Pending Publication Date: 2019-07-26
AIR FORCE UNIV PLA
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Problems solved by technology

However, the above metasurfaces only realize the modulation of the phase of the electromagnetic wave, ignoring the modulation of its amplitude

Method used

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  • Metasurface-based random waveform generator and setting method
  • Metasurface-based random waveform generator and setting method

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Embodiment Construction

[0033] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It can be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0034] Step 101, setting a metasurface unit capable of simultaneously adjusting the amplitude and phase of electromagnetic waves.

[0035] refer to figure 1 , shows a flow chart 100 of an embodiment of a method for setting a metasurface-based arbitrary waveform generator according to the present application. The setting method of described arbitrary waveform generator comprises the following steps:

[0036] Step 101, setting a metasurface unit capable of simultaneously regulating the amplitude and phase of electromagnetic w...

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Abstract

Disclosed are a metasurface-based random waveform generator and a setting method. A metasurface unit with simultaneous amplitude and phase regulation capability is set, wherein the amplitude regulation depends on adjustment of the rotation angle of a unit, while the phase modulation depends on change of the size of the unit; the phase and amplitude distribution of the metasurface is optimized through a genetic algorithm, so that a target directional diagram is formed in a far field; a Vivaldi antenna is used for irradiating the metasurface, and the amplitude and phase distribution interceptedon the surface are combined, and the amplitude and phase distribution required to be compensated for generating the target far-field directional diagram are calculated; and according to the above steps, a sector-shaped wave generator is arranged. The analysis result shows that a display device can form a very high sector-shaped far-field directional diagram in the range of 9.5 to 10.5GHz.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a metasurface-based arbitrary waveform generator and a setting method. Background technique [0002] Metasurface (Metasurface, MS) can flexibly control the phase, amplitude, and polarization of electromagnetic waves, and it has the advantages of low loss, easy processing, low cost, and simple structure. It has become a research topic in the field of metamaterials. Hotspots and Frontiers. A metasurface is essentially a two-dimensional form of metamaterial, which mainly realizes the regulation of electromagnetic waves by rationally arranging some subwavelength quasi-periodic units on the surface of the medium. In recent years, metasurfaces have been widely used to set singular transmittance / reflectors, beam splitters, low RCS (radar cross section) surfaces, and SPP couplers, etc. However, the above-mentioned metasurfaces only realize the modulation of the electromagnetic wave ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/28H01Q3/30H01Q15/00H01Q21/00
CPCH01Q15/0086H01Q3/28H01Q3/30H01Q21/00H01Q21/0087
Inventor 李海鹏王光明侯海生蔡通
Owner AIR FORCE UNIV PLA
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