Light-controlled polarization reconfigurable frequency selective surface unit structure and radar communication radome

Abstract

The invention belongs to the technical field of spatial filtering and discloses a light-controlled polarization reconfigurable frequency selective surface unit structure and a radar communication radome. The light-controlled polarization reconfigurable frequency selective surface unit structure comprises an intermediate three-layer dielectric substrate, two layers of patches with different structures on the upper and lower sides of the dielectric substrate, two light-controlled microwave switches on a lower layer patch, and a metal pillar which is connected to the upper and lower layer patchesand passes through the dielectric substrate, wherein an I-shaped slit is formed at the right side of a metal layer according to an upper layer patch structure, two mutual perpendicular T-shaped slitsare formed in the metal layer, two light-controlled microwave switches are loaded to the two T-shaped slits, and the ON and OFF of the light-controlled microwave switches are controlled by introducing laser with fibers. According to the invention, on one hand, the effect of spatial filtering can be achieved, and on the other hand, the 0-degree and 90-degree polarization reconfigurable functions of the antenna can be achieved.

Description

technical field [0001] The invention belongs to the technical field of space filtering, and in particular relates to an optically controlled polarization reconfigurable frequency selective surface unit structure and a radar communication radome. Background technique [0002] At present, the closest existing technology: in modern high-tech warfare, both the enemy and us will be equipped with a variety of electromagnetic wave detection devices and electromagnetic wave interference devices to seize the information resources needed by Party B and prevent the enemy from obtaining correct information. With the development of electromagnetic interference technology With the development, the electromagnetic environment for radar work is becoming more and more complex, so the research on communication and radar system anti-jamming is becoming more and more important. The traditional anti-jamming methods mainly include frequency-domain anti-jamming and air-space anti-jamming, but with...

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Problems solved by technology

[0006] (1) At present, the reconfigurable frequency selective surface is realized by controlling the DC bias voltage of the electronically controlled microwave switch to realize the reconfigurability of the frequency selective surface. The electronically controlled microwave switch will have slow response speed, high driving bias voltage and long service life. Disadvantages such as short; the presence of electronically controlled microwave switch bias circuits will affect the performance of the frequency selective surface

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