Design of a Multifunctional Reconfigurable Metasurface for Polarization and Propagation Manipulation

Abstract

In this paper, a multifunctional reconfigurable polarization conversion metasurface (MRPCM) is designed for controlling both the propagation and the polarization of electromagnetic wave. The proposed metasurface contains two-layered structures separated by the air layer. The top layer is composed of two back-to-back C-shaped metallic resonators, which is used to convert the polarization. The bottom layer is consisted of two orthogonal metal gratings, which works as the patterned ground. The PIN diodes are embedded on both the upper and lower layer of the patterned ground and controlled through two independent sets of external DC bias network to achieve the multi-function. The gratings serve as both the resonant structure and the PIN diode biasing lines. Therefore, no additional feeding lines are introduced, which can decrease the impact on the performance of the MRPCM. When the PIN diodes of the two layers are turned on, the MRPCM will reflect and convert the incident wave into cross-polarization. When the PIN diodes of the two layers are turned off, the dual-polarization incident waves are transmitted through the MRPCM without conversion. If the PIN diodes of the two layers are in different state, the x-(OFF-ON) and y-polarized (ON-OFF) incident waves are transmitted and their E-field are rotated by 90 • , respectively. Both numerical simulations and experimental results show good reconfigurable performance of the MRPCM

Electrically reconfigurable microwave metasurfaces [Invited]

“…(b) Single active metasurface to achieve reconfigurable EM-wave transmissions and reflections and simultaneously cross-linearized polarization conversions [134] . (c) Design of a multifunctional reconfigurable metasurface for polarization and propagation manipulation [135] . (d) Electrically tunable metasurface absorber based on dissipating behavior of embedded varactors [72] .…”

Electrically Reconfigurable Microwave Metasurfaces With Active Lumped Elements: A Mini Review

“…By switching the status of PIN diodes embeded in each unit cell, the metadevice can not only switch its EM properties between the reflection and transmission mode, but also realize cross linearized polarization conversion. Very recently, Li Y. et al (2019) demonstrated a multi-functional reconfigurable metasurface, which can control both the propagation and the polarization of EM wave. By controlling the bias voltage, it can switch its function among the reflectiontype converter, the transmission-type converter and the transparent structure (Figure 1B).…”

Design of Reconfigurable Micro fluidic Met surface with Different Semiconductor Alloys

“…The wavefronts of the EM wavs are altered using either passive or active components to depicts the switching operation of the reconfigurable metasurface. This could be achieved by adding various active components such as diodes, liquid crystals and MEMS based switches in the structure [1,2,6,7,[9][10][11]). Researchers also demonstrated the variations in impedance characteristics by using alloys and fluid metals as in [12], [13] [14].…”