A Mechanically Adjustable Electromagnetic Deflector and Its Method for Regulating the Reflection Angle of Electromagnetic Waves
A deflector and electromagnetic wave technology, applied in the field of electromagnetic fields and microwaves, can solve the problems of difficult transplantation and complex structure, and achieve the effect of small geometric size and simple structure
Active Publication Date: 2021-09-07
NANJING UNIV
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Problems solved by technology
The disadvantage of this kind of electric field deflector is that the structure is more complex and it is difficult to transplant to the optical band
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[0023] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art all fall into the appended claims of the present application to the amendments of various equivalent forms of the present invention limited range.
[0024] The electromagnetic deflector of the present invention includes a dielectric column array, a parallel plate waveguide and a wave-absorbing material, wherein the dielectric column array is a quasi-two-dimensional structure composed of a square lattice of dielectric columns, and one side of the dielectric column array is an electromagnetic wave incident plane. The other three sides are provided with wave-absorbing materials; both the dielectric column array and the wave-abso...
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The invention discloses a mechanically adjustable electromagnetic deflector and a method for controlling the electromagnetic wave reflection angle thereof. The deflector includes a dielectric column array, a parallel plate waveguide and a wave-absorbing material, wherein the dielectric column array is a square lattice of dielectric columns. In the quasi-two-dimensional structure, one side of the dielectric column array is the incident plane of electromagnetic waves, and the other three sides are provided with wave-absorbing materials; both the dielectric column array and the wave-absorbing material are arranged between two parallel plate waveguides. The electromagnetic deflector does not need to change the lattice structure and resonance frequency of the periodically arranged dielectric pillars and the geometric dimensions of the entire structure, but is realized by the displacement of the dielectric pillars and the cutting of the outermost dielectric pillars to form a linear phase gradient surface Properties of electromagnetic deflection. The electromagnetic deflector of the present invention has the advantages of mechanical adjustment, simple structure, less electromagnetic loss, small geometric size, and can be transplanted to the optical band by changing the geometric size through scale invariance.
Description
technical field [0001] The invention relates to electromagnetic field and microwave technology, relates to a photonic crystal periodic array structure on a linear phase gradient surface, and specifically relates to a mechanically adjustable electromagnetic deflector structure, which can realize the control of the reflection angle of electromagnetic waves. Background technique [0002] It is one of the research hotspots in recent years to adjust the electromagnetic wave reflection by adjusting the phase of the electromagnetic wave. Current electromagnetic deflectors are usually realized by metasurfaces, and the regulation of electromagnetic wave beams is realized by changing the resonant frequency or metasurface structure. The disadvantage of this electric field deflector is that the structure is more complicated and it is difficult to transplant to the optical band. The electromagnetic deflector using the periodic structure of the linear phase gradient surface photonic crys...
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IPC IPC(8): H01Q15/02H01Q15/14H01Q15/23
CPCH01Q15/02H01Q15/14H01Q15/23
Inventor 蒲殷张潇李飞飞陶秀锋
Owner NANJING UNIV