A metamaterial wave-absorbing structure based on a magnetic wave-absorbing material and multiple layers of resistive films
A technology of magnetic wave absorption and resistive film, applied in the direction of magnetic/electric field shielding, electrical components, antennas, etc., to achieve good wave absorption effect, thin thickness, and high strength
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[0022] A specific embodiment of the present invention is given below:
[0023] figure 1 The length and width of the metamaterial wave-absorbing structural unit shown in are 3.8mm, and the total thickness is about 6.5mm. The four layers of PMI foam 1 all use XK110 with a thickness of 1.2mm and a relative dielectric constant of 1.15; the five-layer PET dielectric substrate 2 has a thickness of 0.125mm and a relative dielectric constant of 3.1; resistance film 3(1)-3 (4) The specific resistance film shape is as figure 2 As shown, the resistance values of the resistive films 3(1)-3(4) are 150Ω, 220Ω, 350Ω and 60Ω in sequence; the magnetic absorbing material is WAT_1mm with a thickness of 1mm, and its absorbing characteristics are as follows image 3 As shown, it can be seen that the main operating frequency band of the magnetic material is 1.5GHz-6GHz.
[0024] The reflectivity curve of this embodiment is as Figure 4 Shown by the solid line. Replace the magnetic material with PM...
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