The invention belongs to the technical field of electromagnetic switches, and discloses a
dielectric array switch. The switch comprises a pedestal, a medium array composed of M*N
dielectric cylindersand arranged on the pedestal and heating components arranged at two sides of the
dielectric array; the portion among the dielectric cylinders of the dielectric array is filled with a substance with alow
melting point and strong liquidity after melting; when the dielectric array switch works, an
incident wave is emitted from the direction parallel to the pedestal to heat the filler; when a heatingtemperature reaches the
melting point of the filler, the filler is melted, the filler among the dielectric cylinders is environmental gas, so that dielectric constants of cylinder bodies of the dielectric cylinders are changed, transmissivity of the dielectric array switch to a electromagnetic wave of a certain
wave band is changed, and the switch functions that the electromagnetic wave is allowed to pass through or is
cut off are achieved; the dielectric array switch can prevent external electromagnetic
waves from passing through, cannot be affected by external
electromagnetic wave interference, and has good anti-interference performance, is applicable to communication wave bands and
infrared wave bands, is extremely wide in application
wavelength coverage, has significant switch performance, and is high in stability.