Band-pass wide-stopband reconfigurable frequency selective surface (FSS)

Abstract

The invention discloses a band-pass wide-stopband reconfigurable frequency selective surface (FSS). The FSS comprises a diode switch structure, and a mixed cycle surface structure (4), wherein the diode switch structure comprises a first dielectric layer (2); a first metal strip array (1) is arranged on the upper surface of the first dielectric layer (2); and a second metal strip array (3) is arranged on the lower surface of the first dielectric layer (2), and is fixed with the upper surface of the mixed cycle surface structure (4). The band-pass wide-stopband reconfigurable FSS has the advantages that through on / off control on PIN diodes in the first metal strip array (1) and the second metal strip array (3), switching between a transmission status and a cutoff status of the FSS can be achieved; when an antenna works, energy radiated by the antenna can pass through the FSS with lower loss; when the antenna does not work, the FSS totally reflects external electromagnetic waves; and therefore, compared with the traditional band-pass FSS, the band-pass wide-stopband reconfigurable FSS is more practical and controllable.

Description

technical field [0001] The invention relates to the field of frequency selective surface design in periodic structures, in particular to a band-pass wide stopband reconfigurable frequency selective surface. Background technique [0002] With the rapid development of modern radar and communication systems, wireless electronic systems are widely used. As a necessary part of the wireless transceiver system, the antenna can transmit and receive the required signals, so it plays an important role in communication, radar and aircraft. For the actual working antenna, it is often expected that the antenna only receives signals within the working frequency range, and has no response to incoming waves outside the working frequency band, that is, it has a certain anti-interference ability. In order to achieve this requirement, the frequency selective surface in the periodic structure is usually used to make a radome with a certain shape and installed in front of the antenna; through p...

AI Technical Summary

Problems solved by technology

At present, the FSS radome technology mainly studies the insertion loss of radiated electromagnetic waves in the antenna working frequency band and the reflectivity of the incoming wave irradiation outside the antenna working frequency band. The bandwidth of the FSS transmission frequency band and reflection frequency band are both narrow.

In addition, in the current research, there are few reports on the realization of reconfigurable FSS by controlling the transmission and cut-off states of FSS.

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