Wave absorbing device with adjustable frequency
A technology of frequency and metamaterials, applied in the field of frequency-adjustable absorbing devices, to achieve the effect of wide absorbing frequency band and high absorbing efficiency
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[0025] Absorbing material refers to the material that can absorb the electromagnetic wave energy incident on its surface, and convert the electromagnetic wave energy into heat energy or other forms of energy through the dielectric loss of the material. The basic design idea of the absorbing material is: when the electromagnetic wave is incident on the absorbing material, it can enter the material as much as possible without reflecting as much as possible, that is, the absorbing material is required to meet the impedance matching characteristics; the electromagnetic wave entering the material can be affected by the medium Loss and rapidly attenuated, that is, the absorbing material is required to meet the attenuation matching characteristics. It is the goal pursued by various absorbing materials to satisfy both the impedance matching characteristic and the attenuation characteristic as large as possible.
[0026] At present, there are many absorbing materials researched and a...
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