Model for Estimating Effects of Human Body Shadowing in High Frequency Bands

2015 ◽  
Vol E98.B (5) ◽  
pp. 773-782 ◽  
Author(s):  
Ngochao TRAN ◽  
Tetsuro IMAI ◽  
Yukihiko OKUMURA
Keyword(s):  
Human Body ◽  
High Frequency ◽  
Frequency Bands

Terahertz Radiators Based on Si~3C-SiC MQW IMPATT Diodes

2020 ◽  
Vol 10 (4) ◽  
pp. 501-506
Author(s):  
Monisha Ghosh ◽  
Arindam Biswas ◽  
Aritra Acharyya
Keyword(s):  
High Frequency ◽  
Multiple Quantum Well ◽  
Multiple Quantum ◽  
Noise Performance ◽  
Rf Power ◽  
Drift Diffusion ◽  
Frequency Bands ◽  
Atmospheric Window ◽  
Lower Noise ◽  
Impatt Diodes

Aims:: The potentiality of Multiple Quantum Well (MQW) Impacts Avalanche Transit Time (IMPATT) diodes based on Si~3C-SiC heterostructures as possible terahertz radiators have been explored in this paper. Objective:: The static, high frequency and noise performance of MQW devices operating at 94, 140, and 220 GHz atmospheric window frequencies, as well as 0.30 and 0.50 THz frequency bands, have been studied in this paper. Methods: The simulation methods based on a Self-Consistent Quantum Drift-Diffusion (SCQDD) model developed by the authors have been used for the above-mentioned studies. Results: Thus the noise performance of MQW DDRs will be obviously better as compared to the flat Si DDRs operating at different mm-wave and THz frequencies. Conclusion:: Simulation results show that Si~3C-SiC MQW IMPATT sources are capable of providing considerably higher RF power output with the significantly lower noise level at both millimeter-wave (mm-wave) and terahertz (THz) frequency bands as compared to conventional flat Si IMPATT sources.

scholarly journals Demonstration of space optical transmitter development for multiple high-frequency bands

2013 ◽  
Author(s):  
Hung Nguyen ◽  
Rainee Simons ◽  
Edwin Wintucky ◽  
Jon Freeman
Keyword(s):  
High Frequency ◽  
Frequency Bands ◽  
Optical Transmitter

On the thermal effect of high-frequency electromagnetic radiation on the human body

2021 ◽  
Vol 27 (4) ◽  
pp. 113-124
Author(s):  
V.V. Galanin ◽  
M.V. Golovkina ◽  
K.A. Adyshirine-Zade
Keyword(s):  
Electromagnetic Radiation ◽  
Thermal Effect ◽  
Human Body ◽  
High Frequency

scholarly journals The wireless energy transfer (WET) using ultra high frequency (UHF) for human body implant recharging

2018 ◽  
Vol 43 ◽  
pp. 01027
Author(s):  
Fahmy Rinanda Saputri ◽  
Sunarno ◽  
Memory Motivanisman Waruwu ◽  
Rony Wijaya
Keyword(s):  
Energy Transfer ◽  
Human Body ◽  
High Frequency ◽  
Wireless Energy Transfer ◽  
Ultra High Frequency ◽  
Size And Shape ◽  
Uhf Band

The wireless energy transfer (wet) is widely used in many fields. In particularly for medical, this technique can be implemented to an electronic human body implant recharging. The possible size and shape of the receiver antenna in the experiment before still become a problem. Using Yagi-Uda model antenna for the transmitter unit in ultra-high frequency (UHF) band, this paper refers to design a receiver antenna for implemented as a human implant recharging. The receiver antenna has successfully designed in minimal with its size and shape of the designed antenna is about 1.44 cm3.

Low PAPR DM-RS Design for 5G Systems Operating in High Frequency Bands

2019 ◽  
Author(s):  
Avik Sengupta ◽  
Alexei Davydov ◽  
Guotong Wang ◽  
Sameer Pawar ◽  
Gregory Morozov
Keyword(s):  
High Frequency ◽  
Frequency Bands ◽  
5G Systems
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