Stretchable conductors based on three-dimensional microcoils for tunable radio-frequency antennas

2018 ◽  
Vol 6 (15) ◽  
pp. 4191-4200 ◽  
Author(s):  
Xinghao Li ◽  
Jun Cai ◽  
Xiaozhu Lu ◽  
Yingying Shi ◽  
De Gong ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Three Dimensional ◽  
Stretchable Conductors ◽  
Tunable Antennas

3D deformable metallic microcoils were aligned and nano-welded to fabricate stretchable conductors for flexible tunable antennas.

Three-dimensional radio-frequency transformers based on a self-rolled-up membrane platform

2018 ◽  
Vol 1 (5) ◽  
pp. 305-313 ◽  
Author(s):  
Wen Huang ◽  
Jingchao Zhou ◽  
Paul J. Froeter ◽  
Kathy Walsh ◽  
Siyu Liu ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Three Dimensional

scholarly journals Hygienic assessment of the impact of 5G/IMT-2020 communication networks on public health (literature review)

2021 ◽  
Vol 100 (9) ◽  
pp. 929-932
Author(s):  
Anna M. Egorova ◽  
Lydiya A. Lutsenko ◽  
Anna V. Sukhova ◽  
Vyacheslav V. Kolyuka ◽  
Rustam V. Turdyev
Keyword(s):  
Public Health ◽  
Radio Frequency ◽  
Electromagnetic Radiation ◽  
Communication Networks ◽  
Biological Effects ◽  
Three Dimensional ◽  
Cochrane Library ◽  
Pubmed Search ◽  
The Cochrane Library ◽  
The Impact

The program “Digital Economy of the Russian Federation” approved the Concept for the creation and development of 5G / IMT-2020 networks. The development of 5G communications will significantly impact the implementation of many innovative projects and initiatives: the Smart City project, Unmanned Transport, etc. Along with significant technical advantages compared to previous generations of communication (2G, 3G, 4G), 5G technology has completely different emitting characteristics: more emitting elements, signal modulation, three-dimensional beam, the ability to control the beam, SHF (ultra-high) and EHF (extremely high) radio frequency ranges and centimetre and millimetre wavelengths of electromagnetic radiation. Therefore, it is becoming an especially urgent problem to ensure exposure to the human body of non-ionizing electromagnetic fields of the radio frequency range (30 kHz-300 GHz). The authors searched the literature on the biological effects of 5G cellular communications and electromagnetic radiation in the centimetre and millimetre ranges using the appropriate keywords in PubMed search engines, Scopus, Web of Science, Medline, The Cochrane Library, EMBASE, Global Health, CyberLeninka, RSCI and others. There is currently tentative and conflicting evidence on the impact of 5G. The rapidly growing density of wireless devices and antennas (considering future 5G networks) increases the public health risk from exposure to RF EMFs as the penetration depth for 5G EHF radiation is only a few millimetres. At these wavelengths, resonance phenomena are possible at the cellular and molecular levels, particularly concerning stimulating SHF and EHF oxidative processes and damaging DNA. The influence of the millimetre range of RF-EMF is poorly understood; oncological and non-oncological (impact on the reproductive, immune systems, etc.) effects are possible. Using numerical simulation methods of EMF radiation resonances on insects, Thielens A et al., 2018, found a significant overall increase in the absorbed RF power at a frequency of 6 GHz and higher than a frequency below 6 GHz.

Three dimensional radio-frequency electromagnetic imaging of an in-bin grain conditioning process

2019 ◽  
Vol 167 ◽  
pp. 105059 ◽  
Author(s):  
Colin Gilmore ◽  
Mohammad Asefi ◽  
Kyle Nemez ◽  
Jitendra Paliwal ◽  
Joe LoVetri
Keyword(s):  
Radio Frequency ◽  
Three Dimensional ◽  
Electromagnetic Imaging ◽  
Conditioning Process

scholarly journals Three‐dimensional profiling of collimated radio‐frequency orbital angular momentum beams

2020 ◽  
Vol 14 (6) ◽  
pp. 547-550
Author(s):  
Joshua K. Hamilton ◽  
Simon J. Berry ◽  
Joseph H. Spencer ◽  
Christopher R. Lawrence ◽  
Francis C. Smith ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Radio Frequency ◽  
Orbital Angular Momentum ◽  
Three Dimensional

scholarly journals Three dimensional complex plasma structures in a combined radio frequency and direct current discharge

2013 ◽  
Vol 20 (4) ◽  
pp. 043701 ◽  
Author(s):  
S. Mitic ◽  
B. A. Klumov ◽  
S. A. Khrapak ◽  
G. E. Morfill
Keyword(s):  
Radio Frequency ◽  
Direct Current ◽  
Three Dimensional ◽  
Current Discharge ◽  
Complex Plasma ◽  
Direct Current Discharge

scholarly journals Three-dimensional effects for radio frequency antenna modeling

1993 ◽  
Author(s):  
M.D. Carter ◽  
D.B. Batchelor ◽  
D.C. Stallings
Keyword(s):  
Radio Frequency ◽  
Three Dimensional ◽  
Dimensional Effects
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