Active anisotropic polarization conversion meta-surface for 6G communication bandgap in the reflection mode

Jalal, Abdul; Qasim, Muhammad; Qureshi, Ubaid Ur Rahman; Hu, Bin

doi:10.1088/1402-4896/acff95

Cited by 7 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With this, in this work, we simulate a CDRA with NMP feeding compared with a CDRA with NMP and a graphene layer for 3.30 THz center frequency. Recently, Abdul Jalal et al (2023) [20] investigated a single-layered active anisotropic meta-surface design capable of achieving high polarization conversion efficiency in the 6 G communication band gap. Their proposed design can be tuned from a half-wave plate (HWP) or linear polarization converter to a quarter-wave plate (QWP) or circular polarization converter using the chemical potential of graphene.…”

Section: Introductionmentioning

confidence: 99%

Dielectric resonator antenna with graphene layer and NMP structure for THz applications

Miranda,

Santos,

Souza

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Antennas with high performance and technological materials are relevant for several application on THz band. In this work, we investigate the cylindrical dielectric resonator antenna (CDRA) with non-resonant microstrip patch (NMP) feed combined with a thin layer of graphene on the top of the Dielectric Resonator (DR) designed for 3.30 THz. The NMP structure provides high order HEM12δ mode with great advantages in gain values and radiation efficiency. The graphene layer associated with the NMP structure provided improvements in gain and return loss, as well as, tuning characteristics by changing the chemical potential. The antenna was simulated in Ansys HFSS, and the results obtained with NMP radius of 12.7 µm are S11=-37.98 and 7.9 dB gain. Besides, the bandwidth increased 6.6% to 20%. These results corroborate the effectiveness and enhancement of the antenna parameters providing a great alternative for Terahertz band applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Dielectric resonator antenna with graphene layer and NMP structure for THz applications

Miranda,

Santos,

Souza

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…The primary objectives of the researchers involve the development of metamaterials that exhibit high efficiency, tuneability, and wide bandwidth. To achieve this, researchers have conducted investigations on metamaterials that possess many layers and adjustable functionalities [6][7][8][9][10][11]. Switchable metamaterials based on phase transition materials have garnered significant interest from the scientific community due to their ability to give a programmable degree of freedom in light-matter interaction and information processing [12].…”

Section: Introductionmentioning

confidence: 99%

Ultra-broadband and thin switchable multifunctional metamaterial for terahertz wave

Jalal,

Khan,

Qasim

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

An ultra-broadband thin multi-functional and switchable optical metamaterial is examined in the terahertz (THz) regime. The proposed design achieved high polarization conversion efficiency and can be switched from a polarization converter to an absorber using the phase change transitioning of vanadium dioxide (VO2). The linear polarization conversion is achieved from 6.0 THz to 15.0 THz, achieving a bandwidth of 9.0 THz, and the absorption is realized from 5.0 THz to 16.0 THz with a bandwidth of 11.0 THz. These broadband characteristics were achieved by a simple metamaterial design incorporating a few layers. The relative bandwidth was 85% for the polarization conversion and 105% for the absorption. Moreover, the angular stability of the designed structure is impressive for various incident angles from 00 to 450. The proposed switchable design has the potential to contribute to the development of tunable polarization rotating devices, on/off switching LPC devices, which have wide application potentials in THz detection, sensing, and communications.

show abstract

Ultrathin Bi‐Switchable Vanadium Dioxide‐Based Multifunctional Metamaterial for Terahertz Polarization Modulation

Jalal,

Qasim,

Qurashi

2024

Advcd Theory and Sims

Self Cite

View full text Add to dashboard Cite

A broadband multi‐functional bi‐switchable ultrathin optical metamaterial design is investigated, which can achieve a high polarization conversion efficiency over a wide band of frequencies in the terahertz (THz) regime. The proposed design switches from a linear and circular polarization converter (LPC/CPC) to an efficient absorber by using the phase change property of a functional material, vanadium dioxide (VO2). The proposed design shows switching from an absorber to a reflector using the mechanical configuration of the functional material, and therefore the design can be used as a bi‐switchable device. The first type of switching is accomplished by changing the conductivity of the functional material, while the second type of switching is achieved with the help of the mechanical configuration of the functional material. Moreover, the structure is responsive to wide incident angles. The proposed switchable design has the potential to contribute to the development of tunable polarization rotating devices and on/off switching LPC devices, which have wide applications in detection, sensing, and communications.

show abstract

Active anisotropic polarization conversion meta-surface for 6G communication bandgap in the reflection mode

Cited by 7 publications

References 37 publications

Dielectric resonator antenna with graphene layer and NMP structure for THz applications

Dielectric resonator antenna with graphene layer and NMP structure for THz applications

Ultra-broadband and thin switchable multifunctional metamaterial for terahertz wave

Ultrathin Bi‐Switchable Vanadium Dioxide‐Based Multifunctional Metamaterial for Terahertz Polarization Modulation

Contact Info

Product

Resources

About