The invention discloses an adjustable
narrowband wave-absorbing device based on a
plasma meta-material. The adjustable
narrowband wave-absorbing device comprises a bottom
metal reflecting plate, a
dielectric substrate and
solid-state
plasma resonator units, the
dielectric substrate and the
solid-state
plasma resonator units are arranged on the
metal reflecting plate,
solid-state plasma is implemented by an array composed of PIN units, the PIN units are isolated from one another through isolation
layers, and the PIN unit array is controlled and excited through a
programmable logic array loadedon two ends of the PIN unit array to obtain the solid-state plasma. Each solid-state plasma
resonator unit has two kinds of working states including the
excited state and the unexcited state. the wave-absorbing device has a good
absorption effect on TE polarized
waves, the excitation region of each resonator unit formed by the solid-state plasma is controlled in a
programming mode, excitation of different resonator units can be achieved, and therefore the aim of maintaining the
high absorption rate of the wave-absorbing device in a
high frequency band and dynamically controlling progressive optimization of the
absorption rate in a
low frequency band is achieved, and the working frequency of the wave-absorbing device can efficiently cover the whole
X wave band when the excitation region isselected appropriately.