A switchable frequency selective surface with polarization selectivity in microwave based on the rotatable magnet

Abstract

In this letter, a switchable frequency selective surface (FSS) based on the rotatable magnet is first proposed for polarization selector. The unit cell of the switchable FSS is composed of a rotatable cuboid-magnet and a F4B substrate. The cuboid-magnet is inserted into the substrate which controlled by the orthogonal dual-U-shaped electromagnetic control system. The FSS has a characteristic of polarization selectivity at 8.66 GHz by rotating the cuboid-magnet.To confirm the simulation results, a prototype of the proposed FSS is fabricated and measured. The measured result shows that the switchable FSS can selective the passband in transverse-electric polarization or transverse-magnetic polarization.

Frequency selective rasorber based on cross bend resonators for wideband transmission and absorption

“…In addition, there are some excellent results on active dynamic regulation, they are switchable or active [32][33][34], mechanically reconfigurable [35], and material properties adjustable [36]. However, the bandwidth performance of the unit is often limited by the terminal voltage of the active device, achieving broadband absorption and transmission, the pursuit of high-performance FSR remains a challenging task in the field.…”

Design of broadband dual‐polarised reconfigurable frequency selective surface based on dual‐branch parallel circuit model

“…The RFSSs are mainly altered by external excitations. Comparing with several approaches for realising RFSSs, such as mechanical adjustment [10,11], microelectromechanical systems (MEMS) [12,13], magnetically tunable ferrite [14], liquid crystals [15,16], and active devices [17][18][19][20][21][22][23][24][25][26][27][28][29] such as PIN diodes or varactor diodes, are widely utilised owing to their low cost, compact size, simple fabrication and fast switching speed. The electrically controlled RFSSs can be divided into two categories.…”

“…One is tunable RFSS [17][18][19]; the operating frequencies can shift within a certain frequency range. The other is switchable RFSS [20][21][22][23][24][25][26][27][28][29]. It can change the operating responses among the transmission, reflection and absorption modes in the same frequency band.…”