Results 71 to 80 of about 314,572 (210)

Scattering characteristics of antennas in cyberspace

工程科学学报, 2020
5G network technology can meet the high requirements of cyberspace development in the performance of communication platforms. Massive MIMO (multiple-input multiple-output) antenna array is one of the core technologies of 5G. The mutual coupling effect of
Jian-zhong CHAI, Hang-yu CHEN, Hao-hui HONG, Xu CHAO, Jing-cheng ZHAO   +4 more
doaj   +1 more source

Design and Measurements of a Double Ridged Guide Horn Feed for P-Band Direct Path Measurements [PDF]

, 2013
This paper presents the design and realization of a compact Double Ridged Guide Horn (DRGH), developed to perform direct path measurements at low frequency in a compact test ...
Alicja, Kość, Di Maria, Alberto, Horn, Ralf, Reigber, Andreas, Limbach, Markus   +4 more
core  

Bicnical horn antennas for uniform coverage in indoor areas at mm-wave frequencies [PDF]

, 1994
A method is presented for designing and dimensioning biconical horn antennas in such way that the level of received power does not depend strongly on the separation distance between a centralized base station and a remote radio terminal within an indoor ...
Wagemans, A.G., Smulders, P.F.M.
core   +1 more source

Targeting Mitochondrial Redox Signaling Promotes Neuroregeneration and Functional Recovery in a Multiple Sclerosis Model

Advanced Science, EarlyView.
Modulation of mitochondrial redox signaling by furapyrrodole activates CYB5R3 and suppresses Notch signaling, unlocking the regenerative potential of endogenous neural progenitor cells. This approach promotes neurogenesis, oligodendrogenesis, and remyelination, thereby improving neuronal function in a mouse model of multiple sclerosis and identifying ...
Yuki Narushima, Joshua Saylor, Shun Saito, Jinyan Zhou, Haruka Kawano, Shehata Anwar, Haruki Oba, Rachel Huezo, Miyu Okano, Haruki Matsuda, Makoto Kawatani, Kaori Honda, Hiroyuki Osada, Yuta Kikuchi, Masahito Ohue, Masami Ishibashi, Takayoshi Arai, Makoto Inoue, Midori A. Arai   +18 more
wiley   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

220–325 GHz all-photopolymer Bragg horn antennas towards eco-friendly terahertz applications

Scientific Reports
This paper presents the development of the world’s first high-gain, all-photopolymer Bragg horn antennas explicitly designed for the WR-3.4 band (220–325 GHz), marking a groundbreaking advancement in terahertz (THz) antenna technology.
Nonchanutt Chudpooti, Binbin Hong, Rungrat Viratikul, Feaveya Kheawprae, Akkarat Boonpoonga, Panuwat Janpugdee, Weijia Zhang, Prayoot Akkaraekthalin, Joachim Oberhammer, Nutapong Somjit   +9 more
doaj   +1 more source

Millimetre-wave biconical horn antennas for near uniform coverage in indoor picocells

, 1992
\u3cp\u3eA method is presented for dimensioning biconical horn antennas which give a near uniform coverage within a picocell. This method is applied to the synthesis of a pair of millimetre-wave biconical horn antennas for operation in indoor picocells ...
Wagemans, A.G., Smulders, P.F.M.
core   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

Symmetrical pyramidal horn antennas based on EBG structures [PDF]

, 2011
This paper presents a novel pyramidal (EH) horn antenna based on Electromagnetic Band Gap structures (EBGs). The reported pyramidal woodpile-based horn antenna possesses a symmetrical radiation pattern and a wide operating frequency range.
Ederra, I., Gonzalo, R., Hon, de, B.P., Khromova, I.   +3 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source