Reconfigurable Intelligent Surfaces: Design, Implementation, and Practical Demonstration
Yijun Feng, Qi Hu, Kai Qu et al. · 1 Jun 2023
Metasurfaces, ultrathin two-dimensional version of metamaterials, have attracted tremendous attention due to their exotic capabilities to freely manipulate electromagnetic waves. By incorporating various tunable materials or elements into metasurface designs, reconfigurable metasurfaces and related metadevices with functionalities controlled by external stimuli can be realized, opening a new avenue to achieving dynamic manipulation of electromagnetic waves.…
Wideband Microstrip Antenna in Small Volume Without Using Fundamental Mode
Yongjian Zhang, Yue Li · 1 Jun 2023
Microstrip antennas are of significant interest and extensively utilized in communication systems because of their unique low profile. However, the general difficulty in microstrip antenna design lies in its wideband electromagnetic radiation within a low-profile structure. To enhance the bandwidth, superposing the fundamental mode and other high-order modes is the most common method, but this…
Reconfigurable Metasurface: A Systematic Categorization and Recent Advances
Changhao Liu, Fan Yang, Shenheng Xu et al. · 1 Dec 2023
Considering the rapid progress of theory, design, fabrication and applications, metasurfaces (MTSs) have become a new research frontier in microwave, terahertz and optical bands. Reconfigurable metasurfaces (R-MTSs) can dynamically modulate electromagnetic (EM) waves with unparalleled flexibility, which has led to a great surge of research in recent years. Numerous R-MTSs with powerful capabilities and various…
Electromagnetic Metamaterials: From Classical to Quantum
Jian Wei You, Qian Ma, Lei Zhang et al. · 1 Mar 2023
Electromagnetic (EM) metamaterials are artificially engineered materials with extraordinary EM properties beyond the limit of existing natural materials; thus, they have been widely used to manipulate the amplitude, phase, polarization, frequency, wave vector, waveform, and other degrees of freedom of EM waves in many practical applications. In this review, we will summarize recent advances in…
Electric Field Measurement and Application Based on Rydberg Atoms
Bang Liu, Lihua Zhang, Zong-Kai Liu et al. · 1 Jun 2023
Microwave sensing offers important applications in areas such as data communication and remote sensing. It has thus received much attention from academia, industry, and governments. Atomic wireless sensing uses the strong response of the large electric dipole moment of a Rydberg atom in response to an external field to achieve precise measurement of a radio…
