Wave absorber and frequency selection function reconfigurable device regulated and controlled by gravity field

Abstract

The invention discloses a wave absorber and frequency selection function reconfigurable device regulated and controlled by a gravity field. The device comprises a bottom metal reflecting plate and a dielectric structure above the metal plate. The surface, the interior and the bottom layer of the dielectric structure are provided with three layers of metal resonance structures, and a communicationpart is arranged between the surface and the interior and allows mercury to flow. The surface metal resonance structures are connected through resistors, and a layer of glass dielectric covers the surface of the dielectric structure. Through special design, the position of mercury is changed under the action of a gravity field by rotating the device, so that the device is fundamentally changed indevice attribute and is converted between an ultra-wideband wave absorber and frequency selection. According to the invention, a simple operation means is used, and the purpose of convenient regulation and control is realized only by rotating the device. The materials of the device are easy to obtain, and the device is small, exquisite, flexible in design and wide in application range.

Description

technical field [0001] The invention relates to a device, specifically a gravity field regulated wave absorber and a reconfigurable device with a frequency selection function, belonging to the fields of radio communication and microwave devices. Background technique [0002] As an emerging periodic material based on artificial synthesis, metamaterials have many novel properties, such as negative reflectivity, negative refractive index, etc., which can produce many incredible physical phenomena, so they are often used for perfect imaging or manufacturing Absorber, frequency selection, etc. Metamaterial wave absorbers are usually composed of periodically arranged units, and have a small physical size. They can absorb electromagnetic waves of specific frequency bands in the form of electrical resonance and magnetic resonance. Recently, they have been further developed to prevent electromagnetic interference and electromagnetic stealth. And other civil and military fields. As ...

AI Technical Summary

Problems solved by technology

As a metamaterial device, single-frequency and narrow-band absorption and selection can no longer meet the needs of current development, so the demand for ultra-wideband devices has arisen. At the same time, current devices lack efficient frequency control methods, using temperature or centralized components. There are many inconveniences in the regulation, which greatly limits the practical application range of this type of device. The gravity field regulation does not need other means, and has a great advantage in the convenience of regulation.

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