Article
Engineering, Electrical & Electronic
Lin-Xiao Wu, Na Zhang, Kai Qu, Ke Chen, Tian Jiang, Junming Zhao, Yijun Feng
Summary: In this article, a single-sheet metasurface (MS) is proposed for independently manipulating the transmissive phase and amplitude of linearly polarized electromagnetic (EM) wave. By integrating the proposed MS, a low-profile metalens antenna operating at 12.2 GHz is designed, fabricated, and validated. The results show that the proposed metalens antenna achieves high gain and low sidelobe level, making it a promising candidate for wireless and satellite system applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Physics, Applied
Qiang Xiao, Qian Ma, Liang Wei Wu, Yue Gou, Jia Wei Wang, Wei Han Li, Rui Zhe Jiang, Xiang Wan, Tie Jun Cui
Summary: This paper presents a 3-bit reflective digital coding metasurface for broadband holography, which is demonstrated through simulations and experiments, showing good performance and potential applications in microwave imaging, information processing, and holographic data storage.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Pengfei Zhang, Wenmei Zhang, Xinwei Chen, Guorui Han, Jinrong Su, Rongcao Yang
Summary: This method proposes a design for low-sidelobe dual-beam antennas based on metasurfaces with independently regulated amplitude/phase. By modeling the antenna, employing phase compensation technology, and controlling the reflection amplitude of the metasurface, the sidelobe level of the antenna is successfully reduced.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Physics, Applied
Yuan Li, He Ma, Yu Wang, Jun Ding, Limei Qi, Yulan Fu, Ran Ning, Lu Rong, Dayong Wang, Xinping Zhang
Summary: With the growing need for broadband wireless communication, high-resolution radar, security inspection, and biological analysis, terahertz (THz) technology has made significant progress in recent years. This progress has been possible due to the development of various THz functional devices, with metasurface being widely applied in these devices. However, constructing flexible THz metasurface devices remains a challenge due to the lack of flexibility in traditional semiconductor and metal materials. In this study, a two-dimensional material called MXene was used to create flexible metasurfaces with frequency filtering and polarization functions. These metasurfaces, combined with vanadium dioxide, showed excellent amplitude modulation performance under electrical stimulation. The flexibility and high integration of this active metasurface make it useful in THz imaging and sensing systems.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Ziyue Wang, Qikun Liu, Mengyao Yan, Jie Liang, Dongfang Zhou
Summary: This study proposes a double-layer metasurface capable of independent amplitude and phase modulation for x-polarized waves under y-polarized incidence. The cross-polarized transmission achieves complete phase and amplitude coverage with a wideband characteristic. The proposed metalens antenna realizes a significant improvement in sidelobe level suppression compared to phase-only modulation metalens antenna.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Analytical
Kleiverg Encino, Marco A. Panduro, Alberto Reyna, David H. Covarrubias
Summary: This paper presents novel design techniques for the Fermat spiral, with a focus on reducing side lobe level (SLL). The array system is based on a Fermat spiral configuration and considers both uniform and non-uniform amplitude excitations. Genetic algorithms (GA) are used to optimize the design parameters. The design cases are validated using electromagnetic simulation, taking into account mutual coupling and antenna element pattern effects.
Article
Engineering, Electrical & Electronic
Changfei Zhou, Shanshan Yuan, Hui Li, Bo Wang, Hang Wong
Summary: A dual-polarized dual-band antenna design utilizing a simple bifunctional metasurface (MS) is proposed, achieving a wide bandwidth in the lower frequency band and enhanced gain in the higher frequency band. By integrating the antenna with the MS, dual bands and dual polarizations are obtained.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Hai Lin Wang, Yan Kai Zhang, Tai Yi Zhang, Hui Feng Ma, Tie Jun Cui
Summary: This paper proposes a broadband and programmable amplitude-phase-jointcoding (APJC) information metasurface. By adjusting the bias voltage of the PIN diode integrated in the metaatom, the phase and amplitude of reflected electromagnetic waves can be independently controlled. The metasurface has the ability to independently control the energy allocation and wavefront tailoring of electromagnetic waves, and can be reprogrammed in real-time within a certain frequency range.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Fang Yuan, Qiang Chen, Yuejun Zheng, Weipeng Wan, Liang Ding, Zhanshan Sun, Yunqi Fu
Summary: We report a deterministic approach to decouple the phase and amplitude of reflected waves based on a single-layer metasurface. This approach allows for the generation of 1-bit phase meta-atoms with a natural 180-degree phase difference and controllable amplitude. These phase meta-atoms have potential in wavefront manipulation and radar applications.
MATERIALS & DESIGN
(2023)
Article
Physics, Multidisciplinary
Shuai Wang, Shun Wen, Zi-Lan Deng, Xiangping Li, Yuanmu Yang
Summary: This study proposes metasurface-based polarizers that can filter unpolarized light into light with any prescribed state of polarization (SOP) and degree of polarization (DOP). The metasurface's Jones matrix elements are designed using the adjoint method. Experimental demonstrations of the metasurface-based polarizers in the near-infrared frequencies show the conversion of unpolarized light into linear, elliptical, or circular polarizations with varying DOPs. This research introduces a new degree of freedom for metasurface polarization optics and has potential applications in polarization calibration and quantum state tomography.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Zhitong Sun, Jiahao Zhi, Yuanlu Chen, Bijun Xu, Zhifang Qiu, Xiaogang Wang, Xinning Yu
Summary: Unlike other methods that only modify the phase of cross-polarization components, this paper presents a novel concept for multifunctional manipulation of a metasurface through full-phase modulation. This method allows for simultaneous and independent amplitude and phase control of both co- and cross-polarization components of circularly polarized waves. Experimental results at 980nm wavelength demonstrate the feasibility of this complex amplitude control method for circularly polarized light (left or right circularly polarized).
RESULTS IN PHYSICS
(2023)
Article
Optics
Lucy L. Hale, C. Thomas Harris, Ting Shan Luk, Sadhvikas J. Addamane, John L. Reno, Igal Brener, Oleg Mitrofanov
Summary: Using an ultra-thin perfectly absorbing low-temperature grown GaAs metasurface as the photoconductive channel significantly improves the efficiency of THz PCA detectors, allowing for sensitive THz detection with much lower optical gate powers.
Article
Engineering, Multidisciplinary
Vinod P. Kumar, Basudeb Ghosh
Summary: This paper presents a study on reducing the side-lobe level (SLL) using transmission type metasurface (MTS) and non-uniform array technique. The SLL is controlled by controlling the amplitude and phase distribution, and various amplitude distribution functions are introduced to further reduce the SLL. Optimization of the standard deviation (sigma) is used to minimize the SLL.
ENGINEERING RESEARCH EXPRESS
(2022)
Article
Engineering, Electrical & Electronic
Yi Yuan, Chao Huang, Jun Ding, Chenjiang Guo
Summary: In this letter, a low-profile low-sidelobe beam steering metasurface lens (metalens) is presented. The proposed metalens achieves asymmetric polarization conversion using only a single layer with a low profile. A modified Taylor synthesis method for amplitude modulation is proposed for the metalens, reducing the sidelobe level (SLL) while the beam is tilted. Experimental results are in good agreement with simulations.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Physics, Applied
Jianfeng Yang, Juan Chen, Lei Quan, Xiaoming Chen, Hongyu Shi, Yajun Liu, Wei Xue
Summary: This study proposes a strategy combining active transmission amplitude control with phase coding to dynamically tailor the transmitted field patterns in the microwave regime. Manipulation of the radiated EM waves is achieved through phase coding and active amplitude control.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
