Design of a wideband and reconfigurable polarization converter using a manipulable metasurface

A Novel Reconfigurable Metasurface with Coincident and Ultra-Wideband LTL and LTC Polarization Conversion Functions

“…Based on our previous studies [26], [30], we found that by loading switching device in the strong induced current part, two kinds of current loops and polarization reconfiguration can be realized. The proposed NRM is based on an ultra-wideband single polarization converter [15].…”

“…In order to facilitate simulation, it is simplified into a metal bridge structure. According to the literature [30], [34], this method is feasible. When the switch is on, MEMS switch is simplified into a metal bridge, as shown in Fig.…”

“…The implementation of the existing reconfigurable polarization converters can be divided into two methods. One method is to change the dielectric materials [16][17][18][19][20][21], the other is to change effective metal structure by using electronic devices [22][23][24][25][26][27][28][29][30][31][32][33]. The former method uses materials such as liquid crystals [16], graphene [17], [18], metal fluid [19], [20], vanadium oxide (VO 2 ) film [21] to replace the traditional metal and dielectric materials, this method has the characteristics of high frequency band and difficult fabrication.…”

“…The former method uses materials such as liquid crystals [16], graphene [17], [18], metal fluid [19], [20], vanadium oxide (VO 2 ) film [21] to replace the traditional metal and dielectric materials, this method has the characteristics of high frequency band and difficult fabrication. In contrast, the latter method uses PIN diodes [22][23][24][25][26][27], varactor diode [28], [29] and MEMS switch [30], [31] which have the characteristics of easy fabrication, good electronic control performance, flexible structure and high efficiency. For example, an active metasurface has been proposed in [29], which could convert linear polarization waves into orthogonal polarization waves and circular polarization waves.…”

“…For example, an active metasurface has been proposed in [29], which could convert linear polarization waves into orthogonal polarization waves and circular polarization waves. In our previous work [30], the proposed reconfigurable polarization converter could reflect the x-polarization waves to y-polarization waves and circular polarization waves from 8.07 GHz to 10.77 GHz. Performance comparison of reconfigurable polarization converters is given in Tab.…”