A bandwidth expanding microwave absorber based on cavity resonance and lumped elements
A technology of lumped components and wave absorbers, applied to electrical components, antennas, etc., can solve problems such as narrow working frequency band, easy to be limited, easy to generate frequency deviation, etc., and achieve the effect of popular structure, strong functionality and flexible design
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[0032] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0033] The present invention is a wave absorber based on cavity resonance and bandwidth expansion of lumped elements, such as Figures 1 to 7 As shown, its structure is composed of a bottom reflection plate, a dielectric substrate, an air column, a solid-state plasma resonance unit and a plasma excitation source controlled by a programmable logic array. The bottom reflection plate is provided with a dielectric substrate, and the dielectric substrate has For FR-4 with a large loss tangent, periodically arranged air columns are inserted into the interior of the dielectric substrate, and a solid-state plasma resonance unit is provided on the upper surface of the dielectric substrate. The solid-state plasma unit on the surface of the medium is composed of four discrete split rings, the four rings are respectively connected by solid-state plasma rods, a...
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