Topic Editors

1. School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China
2. Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063099, China
School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China
Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
Dr. Suman Mukherjee
School of Chemical Engineering and Physical Sciences, Department of Physics, Lovely Professional University, Phagwara 144411, India

Emerging Terahertz Technologies for Integrated Sensing and Communication

Abstract submission deadline
30 April 2024
Manuscript submission deadline
31 July 2024
Viewed by
4542

Topic Information

Dear Colleagues,

The terahertz (THz) band is envisioned as one of the key technologies in supporting 6G smart lives in the future, where the biophysical world and digital world will be integrated with an intelligent connection between everything. Its characteristics, such as small device size, strong sensing ability, ultra-high data rate up to Tbit/s, and high security at the physical layer, demonstrate its potential for the integration of sensing and communication (ISAC). By unitizing software and/or hardware resources (waveform, spectrum, antenna, system, etc.), THz ISAC has shown its unique superiority in improving communication efficiency and perceptual sensitivity (positioning enhancement, posture recognition, etc.) with low resource consumption. This proposed Topic aims to capture the latest advances in terahertz techniques for the integration of sensing and communication. Review and original research articles on theoretical methods, applicative techniques, as well as new advanced methodologies for relevant scenarios, are very welcome. We hope that, by reading this Topic, that readers will understand how the terahertz band can be applied in sensing, communication and other fields.

The potential topics include, but are not limited to: Terahertz ISAC system designs; Transceivers and components for terahertz systems; New device technologies, architectures, and demonstrators for terahertz ISAC systems; Terahertz antenna systems and arrays; Ultra-massive MIMO architectures and control algorithms; Waveform design and beamforming for terahertz ISAC; THz imaging, positioning/localization, and THz spectroscopy; Ultra-broadband digital signal processing architectures and algorithms; Terahertz channel propagation and models; Health risks and evaluation for terahertz illumination; AI-assisted terahertz ISAC system design and application.

Prof. Dr. Jianjun Ma
Dr. Xiue Bao
Dr. Bin Li
Dr. Suman Mukherjee
Topic Editors

Keywords

  • ISAC system
  • transceiver and component
  • antenna and array
  • air-interface design
  • waveform design
  • massive mimo
  • system integration
  • digital signal processing
  • physical-layer security
  • channel modeling
  • machine learning

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Applied Sciences
applsci
2.7 4.5 2011 16.9 Days CHF 2400 Submit
Electronics
electronics
2.9 4.7 2012 15.6 Days CHF 2400 Submit
Photonics
photonics
2.4 2.3 2014 15.5 Days CHF 2400 Submit
Remote Sensing
remotesensing
5.0 7.9 2009 23 Days CHF 2700 Submit
Technologies
technologies
3.6 5.5 2013 19.7 Days CHF 1600 Submit

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Published Papers (5 papers)

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17 pages, 3600 KiB  
Article
Real Aperture Continuous Terahertz Imaging System and Spectral Refinement Method
Photonics 2023, 10(9), 1020; https://doi.org/10.3390/photonics10091020 - 06 Sep 2023
Viewed by 670
Abstract
In order to meet the increasing demand of non-destructive testing (NDT) in engineering practice, a continuous terahertz NDT platform based on linear scanning has been developed, with a center frequency of 154 GHz and a bandwidth of 56 GHz. This system combines frequency [...] Read more.
In order to meet the increasing demand of non-destructive testing (NDT) in engineering practice, a continuous terahertz NDT platform based on linear scanning has been developed, with a center frequency of 154 GHz and a bandwidth of 56 GHz. This system combines frequency modulation continuous wave (FMCW) radar technology with a continuous scanning structure, as well as a data acquisition platform to provide a non-contact detection method; this is highly efficient and compensates for the shortcomings of traditional methods such as microwave, X-ray, ultrasonic, and others in safety inspection and special detection. In addition, a signal processing method of spectral refinement and correction is proposed in this paper for accurate thickness measurement. The results show that the method has a high accuracy for ABS, PVC, and ceramic matrix composites. By extracting the characteristic parameters, the detection and imaging of prefabricated defects, such as debonding and bubbles in composite materials, have been successfully achieved. This helps to evaluate the internal state of the inspected object more intuitively and further meets the requirements of industrial NDT. Full article
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18 pages, 3608 KiB  
Article
Evaluation of the Efficiency of Generation of Terahertz Surface Plasmon Polaritons by the End-Fire Coupling Technique
Photonics 2023, 10(8), 917; https://doi.org/10.3390/photonics10080917 - 09 Aug 2023
Cited by 1 | Viewed by 655
Abstract
One of the most important problems in the plasmonics of the terahertz (THz) range, which is actively developing now, is the efficient generation of surface plasmon polaritons (SPPs). The simplest and most promising technological technique of photon excitation of THz SPPs is through [...] Read more.
One of the most important problems in the plasmonics of the terahertz (THz) range, which is actively developing now, is the efficient generation of surface plasmon polaritons (SPPs). The simplest and most promising technological technique of photon excitation of THz SPPs is through diffraction of radiation on the edge of the conducting surface of the sample (the end-fire coupling technique). In this paper, we experimentally evaluated the efficiency of the generation of monochromatic THz SPPs (λ0 = 141 μm) by this method with a sample in the form of a cylindrical segment, the convex surface of which has a gold layer coated by zinc sulfide (ZnS) with thickness d = 0–2 µm. Such configuration of the surface supporting the SPPs not only shields the detector from parasitic bulk waves arising during diffraction but also enables one to change the distribution of the SPP field in the air by varying the coating layer thickness d. On an uncoated gold surface, the SPP generation efficiency was η ≈ 20%. In the presence of a ZnS layer on the gold, the SPP generation efficiency gradually increased with d, reached the maximum (ηmax ≈ 60%) at d ≈ 1 μm, and then gradually decreased. Theoretical analysis showed that the efficiency of the SPP generation can be raised up to 80% due to the selection of an optimal SPP field profile via variation of the thickness of the dielectric layer on the metal surface, as well as with optimal incidence of the focused radiation on the edge of the sample. Full article
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13 pages, 2297 KiB  
Article
Biothermal Heating on Human Skin by Millimeter and Sub-Terahertz Waves in Outdoor Environment—A Theoretical Study
Appl. Sci. 2023, 13(14), 8305; https://doi.org/10.3390/app13148305 - 18 Jul 2023
Viewed by 854
Abstract
The frequency band in the millimeter-wave (MMW) and sub-terahertz (sub-THz) range has shown great potential in mobile communication technology due to the advantages of ultra-large bandwidth and ultra-high data rates. Based on the increasing research activities on MMW/sub-THz waves, biological safety at relevant [...] Read more.
The frequency band in the millimeter-wave (MMW) and sub-terahertz (sub-THz) range has shown great potential in mobile communication technology due to the advantages of ultra-large bandwidth and ultra-high data rates. Based on the increasing research activities on MMW/sub-THz waves, biological safety at relevant frequencies must be explored, especially when high-power illumination occurs. Here, its non-ionizing nature plays a vital role, which makes it safe for humans at low illumination powers. However, under high power, the biothermal heating on the skin surface is still a main concern, and lots of research has been conducted in a laboratory. In this article, we analyze the thermal heating effect of human skin in outdoor environments, where atmospheric conditions can significantly impact the propagation of MMW/sub-THz waves. Our analysis is based on rat skin, which has a similar structure to human skin. A theoretical model combining Pennes’ bioheat transfer equation (BHTE), the ITU model, and the Mie scattering theory is developed. Good agreement between calculation results and measured data confirms the efficiency of this model. The influence of rainfall rate, humidity, operating frequency, illumination time, power density, and propagation distance is presented and discussed. Full article
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12 pages, 1517 KiB  
Article
Identification of Terahertz Link Modulation in Atmospheric Weather Conditions
Appl. Sci. 2023, 13(13), 7831; https://doi.org/10.3390/app13137831 - 03 Jul 2023
Viewed by 713
Abstract
With the rapid increase of wireless connectivity, current spectrum resources are not enough for significant requirements for large data capacity. Research interests are moving towards the high-frequency band in the terahertz range for wider bandwidth. However, multipath scattering and induced time delay, suffered [...] Read more.
With the rapid increase of wireless connectivity, current spectrum resources are not enough for significant requirements for large data capacity. Research interests are moving towards the high-frequency band in the terahertz range for wider bandwidth. However, multipath scattering and induced time delay, suffered by terahertz links propagating in outdoor weather, lead inevitably to increasing expenses in baseband signal processing. This trades away the advantage of low time latency and high stability, which are commonly considered as important merits of terahertz wireless communication techniques. To reduce the burden in signal processing and explore the feasibility of modulation identification in the terahertz band, a method of wireless link modulation identification is considered as a potential solution. In this work, it is investigated theoretically by employing two kinds of neural networks: the convolutional neural network (CNN) and the long short-term memory network (LSTM). Link deterioration caused by different atmospheric weather is introduced into the theoretical model, and the performance of this method is evaluated. Results show that the identification accuracy of the constructed neural networks can be up to 99%, which means such a method is efficient for identification of the modulation format of terahertz wireless links under different weather conditions. This work demonstrates the feasibility of modulation identification in outdoor terahertz communication scenarios and provides specific references. Full article
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13 pages, 5883 KiB  
Article
A Compact Hybrid G-band Heterodyne Receiver Integrated with Millimeter Microwave Integrated Circuits and Schottky Diode-Based Circuits
Electronics 2023, 12(13), 2806; https://doi.org/10.3390/electronics12132806 - 25 Jun 2023
Cited by 1 | Viewed by 734
Abstract
This paper presents a compact hybrid G-band (170–260 GHz) heterodyne receiver module incorporating both Millimeter Microwave Integrated Circuits (MMICs) and a Schottky diode-based circuit. An on-chip sextupler and a Low Noise Amplifier (LNA), along with a diode-based Sub-Harmonic Mixer (SHM), are integrated into [...] Read more.
This paper presents a compact hybrid G-band (170–260 GHz) heterodyne receiver module incorporating both Millimeter Microwave Integrated Circuits (MMICs) and a Schottky diode-based circuit. An on-chip sextupler and a Low Noise Amplifier (LNA), along with a diode-based Sub-Harmonic Mixer (SHM), are integrated into the demonstrated singular module, which is carefully designed and arranged with the co-simulations in electromagnetic and thermal domain. Through this methodology, a terahertz receiver module is fabricated with a volume of only 27 × 20 × 20 mm3. The measured results indicate that the double-sideband conversion gain of the receiver is 10.5–17.5 dB from 195 GHz to 230 GHz, while the noise temperature is 1009–1158 K. As a result, this terahertz receiver provides recorded miniaturized hardware applicable for terahertz Integration of Sensing and Communication (ISAC) systems. Full article
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