Results 21 to 30 of about 71,505 (298)

Solar science with the Atacama Large Millimeter/submillimeter Array - A new view of our Sun [PDF]

, 2015
The Atacama Large Millimeter/submillimeter Array (ALMA) is a new powerful tool for observing the Sun at high spatial, temporal, and spectral resolution.
Alissandrakis, C. E., Antolin, P., Ayres, T., Barta, M., Bastian, T., Benz, A. O., Black, J. H., Brajsa, R., De Pontieu, B., Doyle, J. G., Fleck, B., Fleishman, G., Gary, D., Gunar, S., Hauschildt, P., Heinzel, P., Hudson, H., Karlicky, M., Kato, Y., Kontar, E. P., Labrosse, N., Loukitcheva, M., Ludwig, H. -G., Nakariakov, V. M., Nindos, A., Perez, E., Scullion, E., Selhorst, C. L., Shimojo, M., Solanki, S. K., Soler, R., Tiwari, S. K., van der Voort, L. Rouppe, Van Doorsselaere, T., Wedemeyer, S., White, S. M., Yagoubov, P., Zaqarashvili, T.   +37 more
core   +2 more sources

Shaping electromagnetic waves using software-automatically-designed metasurfaces

Scientific Reports, 2017
We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer.
Qian Zhang, Xiang Wan, Shuo Liu, Jia Yuan Yin, Lei Zhang, Tie Jun Cui   +5 more
doaj   +1 more source

THz in biology and medicine: toward quantifying and understanding the interaction of millimeter- and submillimeter-waves with cells and cell processes [PDF]

, 2010
As the application and commercial use of millimeter- and submillimeter-wavelength radiation become more widespread, there is a growing need to understand and quantify both the coupling mechanisms and the impact of this long wavelength energy on ...
Pikov, Victor, Siegel, Peter H.
core   +1 more source

Substrate Optimization for Integrated Circuit Antennas [PDF]

, 1982
The reciprocity theorem and integral equation techniques are employed to determine the properties of integrated-circuit antennas. The effect of surface waves is considered for dipole and slot elements on substrates.
Alexopoulos, Nicolaos G., Katehi, Pisti B., Rutledge, David B.   +2 more
core   +2 more sources

Space-time-coding digital metasurfaces

Nature Communications, 2018
Current digital coding metasurfaces are only space-encoded. Here, the authors propose space-time modulated digital coding metasurfaces to obtain simultaneous manipulations of electromagnetic waves and present harmonic beam steering, beam shaping, and ...
Lei Zhang, Xiao Qing Chen, Shuo Liu, Qian Zhang, Jie Zhao, Jun Yan Dai, Guo Dong Bai, Xiang Wan, Qiang Cheng, Giuseppe Castaldi, Vincenzo Galdi, Tie Jun Cui   +11 more
doaj   +1 more source

Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics

Nanophotonics, 2020
Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless ...
Zhang Cheng, Yang Jin, Yang Liu Xi, Ke Jun Chen, Chen Ming Zheng, Cao Wen Kang, Chen Mao, Wu Zhan Hao, Chen Jian Feng, Cheng Qiang, Cui Tie Jun   +10 more
doaj   +1 more source

High‐Precision Direction‐of‐Arrival Estimations Using Digital Programmable Metasurface

Advanced Intelligent Systems, 2022
Commonly, phased array antennas are used to provide spatial resolution for direction of arrival (DOA) estimations. However, the phase‐array‐based DOA estimations usually require complicated system architecture and signal processing.
Jia Wei Wang, Zi Ai Huang, Qiang Xiao, Wei Han Li, Bai Yang Li, Xiang Wan, Tie Jun Cui   +6 more
doaj   +1 more source

A Low-Profile and Wide-Angle Scanning Planar Ultrawideband Modular Antenna With Ultra-Thin Loading Window

IEEE Access, 2022
Ultrawideband phased antenna array has been widely used in communications, radars and detection. However, the high profile and poor wide-angle scanning characteristics have always been the critical limitation for many available ultrawideband antenna ...
Xin Quan, Zhenxin Cao, Huaimin Zhou, Shengchi Zhu   +3 more
doaj   +1 more source

Millimeter Wave Communications [PDF]

Proceedings of the 15th ACM Workshop on Hot Topics in Networks, 2016
National Science Foundation (U.S.)
Hassanieh, Haitham, Salehi-Abari, Omid, Rodriguez, Michael, Katabi, Dina   +3 more
openaire   +4 more sources

Multi-layer transmission line of spoof surface plasmon polaritons

EPJ Applied Metamaterials, 2022
In modern microwave technology, multi-layer structure is widely adopted in compact circuit design. In a multi-layer microwave system, the transmission line (TL) plays an important role.
Lu Yuxi, Tang Wenxuan, Cui Tie Jun
doaj   +1 more source