scholarly journals Tunable perfect magnetic mirrors and retroreflectors in terahertz band

2020 ◽  
Vol 28 (1) ◽  
pp. 753 ◽  
Author(s):  
Hao Song ◽  
Lei Sun ◽  
Guo Ping Wang
Keyword(s):  
Magnetic Mirrors ◽  
Terahertz Band

scholarly journals Estimation methods to extract complex permittivity from transmission coefficient in the terahertz band

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Chuang Yang ◽  
Jian Wang ◽  
Cheng Yang
Keyword(s):  
Transmission Coefficient ◽  
Iterative Algorithm ◽  
Complex Permittivity ◽  
Free Space ◽  
Estimation Methods ◽  
Extraction Technique ◽  
Initial Value ◽  
Terahertz Band ◽  
Terahertz Frequencies

AbstractIn this paper, the characteristics of the transmission coefficient (S$$_{21}$$ 21 ) measured in free-space at terahertz frequencies are analyzed. The analysis results are used to estimate the permittivity of the material under test, and the estimated permittivity is adopted as an initial-value for the iterative algorithm to extract the complex permittivity of the material from the S$$_{21}$$ 21 . The iterative extraction technique based on the estimation is efficient, while the iterative extraction technique without the estimation is inefficient. Various known materials in the literature are used to validate the technique in the terahertz band.

scholarly journals Spatial characterization of propagation channels for terahertz band

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Bilal Aghoutane ◽  
Mohammed El Ghzaoui ◽  
Hanan El Faylali
Keyword(s):  
Communication Systems ◽  
Indoor Environment ◽  
Channel Model ◽  
Path Loss ◽  
Propagation Loss ◽  
Terahertz Band ◽  
Indoor Scenarios ◽  
Transmission Windows ◽  
Sv Channel

AbstractThe aim of this work consists in characterizing the Terahertz (THz) propagation channel in an indoor environment, in order to propose a channel model for THz bands. We first described a propagation loss model by taking into account the attenuation of the channel as a function of distance and frequency. The impulse response of the channel is then described by a set of rays, characterized by their amplitude, their delay and their phase. Apart from the frequency selective nature, path loss in THz band is also an others issue associated with THz communication systems. This work based on the conventional Saleh-Valenzuela (SV) model which is intended for indoor scenarios. In this paper, we have introduced random variables as Line of sight (LOS) component, and then merging it with the SV channel model to adopt it to the THz context. From simulation, we noted an important effect when the distance between the transmitter and the receiver change. This effect produces variations in frequency loss. The simulations carried out from this model show that to enhance the performance of THz system it is recommended to transmit information over transmission windows instead over the whole band.

A polarization- and angle-insensitive broadband tunable metamaterial absorber using patterned graphene resonators in the terahertz band

2020 ◽  
Vol 132 ◽  
pp. 106513 ◽  
Author(s):  
Xuemei Du ◽  
Fengping Yan ◽  
Wei Wang ◽  
Siyu Tan ◽  
Luna Zhang ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Terahertz Band ◽  
Tunable Metamaterial

Optimizing Energy Consumption in Terahertz Band Nanonetworks

2014 ◽  
Vol 32 (12) ◽  
pp. 2432-2441 ◽  
Author(s):  
Shahram Mohrehkesh ◽  
Michele C. Weigle
Keyword(s):  
Energy Consumption ◽  
Terahertz Band

Multiband Frequency-Selective Surface With Five Resonance Peaks in Terahertz Band

2016 ◽  
Vol 6 (2) ◽  
pp. 292-299 ◽  
Author(s):  
Shen Qiao ◽  
Yaxin Zhang ◽  
Yuncheng Zhao ◽  
Yucong Zhou ◽  
Shixiong Liang ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Terahertz Band ◽  
Frequency Selective
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