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Tunable all-dielectric unidirectional electromagnetic wave stealth device

An electromagnetic wave and all-dielectric technology, applied in the direction of electrical components, antennas, etc., can solve the problem of non-adjustable working frequency, achieve the effect of simple and easy implementation, and improve applicability

Active Publication Date: 2017-05-17
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the current optical stealth devices are generally small in size and use metamaterial structural units to achieve specific electromagnetic parameters. Once the structure is determined, the working frequency band is also determined, and the working frequency cannot be adjusted.

Method used

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  • Tunable all-dielectric unidirectional electromagnetic wave stealth device
  • Tunable all-dielectric unidirectional electromagnetic wave stealth device
  • Tunable all-dielectric unidirectional electromagnetic wave stealth device

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] First, a tunable all-dielectric one-way electromagnetic wave cloaking device proposed according to an embodiment of the present invention is described.

[0028] Specifically, the tunable all-dielectric one-way electromagnetic wave cloaking device includes: a dielectric particle array with a high dielectric constant and a temperature control system.

[0029] Wherein, the high dielectric constant dielectric particle array includes a plurality of rectangular parallelepiped unit lattices with the same geometric size, wherein e...

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Abstract

The invention discloses a tunable all-dielectric unidirectional electromagnetic wave stealth device, comprising a dielectric particle array with a high dielectric constant and a temperature control system, wherein the dielectric particle array with the high dielectric constant comprises a plurality of cuboid unit lattices with the same geometrical size, and cuboid dielectric particles are arranged in each lattice of the plurality of cuboid unit lattices; and the temperature control system is used for controlling the ambient temperature of the environment in which the stealth device is located so as to change the dielectric constant of the dielectric particles, and thus the frequency characteristic curve of the stealth device can be moved. According to the tunable all-dielectric unidirectional electromagnetic wave stealth device disclosed by the invention, the frequency characteristic curve of the device can be moved by adjusting the temperature, the stealth of the electromagnetic waves at different frequency bands can be achieved, and the applicability of the device can be improved; and the device is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave control, in particular to a tunable all-dielectric one-way electromagnetic wave stealth device. Background technique [0002] Stealth has always been the goal that people yearn for from ancient times to the present. Scientists cover the surface of the aircraft with absorbing materials, and through the design of the shape and geometric dimensions of the aircraft, the radar waves are absorbed after being irradiated on the aircraft, reducing the reflection of the aircraft on the radar waves, and realizing the stealth fighter. However, with the development of radar technology and the widespread use of ground-to-air radar, the stealth method by absorbing incident waves has gradually revealed its shortcomings, and it is no longer possible to achieve "stealth". [0003] In related technologies, a non-absorbing stealth method based on transformation optics is gradually emerging. The principl...

Claims

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Application Information

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IPC IPC(8): H01Q15/08
CPCH01Q15/08
Inventor 刘井泉赵乾彭瑞光肖宗祺孟永钢
Owner TSINGHUA UNIV
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