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Journal articles on the topic 'Sub-THz communications'

Author: Grafiati

Published: 17 May 2025

Last updated: 31 July 2025

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1

Shur, Michael, Gregory Aizin, Taiichi Otsuji, and Victor Ryzhii. "Plasmonic Field-Effect Transistors (TeraFETs) for 6G Communications." Sensors 21, no. 23 (2021): 7907. http://dx.doi.org/10.3390/s21237907.

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Ever increasing demands of data traffic makes the transition to 6G communications in the 300 GHz band inevitable. Short-channel field-effect transistors (FETs) have demonstrated excellent potential for detection and generation of terahertz (THz) and sub-THz radiation. Such transistors (often referred to as TeraFETs) include short-channel silicon complementary metal oxide (CMOS). The ballistic and quasi-ballistic electron transport in the TeraFET channels determine the TeraFET response at the sub-THz and THz frequencies. TeraFET arrays could form plasmonic crystals with nanoscale unit cells sma

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2

Alsharari, Meshari, Khaled Aliqab, Farman Ali, and Ammar Armghan. "Integrated Free-Space Optics and Fiber Optic Network Performance Enhancement for Sustaining 5G High Capacity Communications." International Journal of Optics 2023 (January 13, 2023): 1–9. http://dx.doi.org/10.1155/2023/8685686.

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In this paper, the integrated free-space optics (FSO) and fiber optic model is evaluated using new radio (NR) sub-THz link to sustain next generation 5G capacity. The proposed integrated model effectively applies over 25 km single mode fiber, 0.5 m RF wireless, and 500 m optical wireless. In addition, four different sub-THz frequencies (125, 150, 175, and 200 GHz) are estimated on NR-based 5G FSO network, including 22 Gbps 64quadrature amplitude modulation-orthogonal frequency division multiplexing (64QAM-OFDM) signal speed. The proposed FSO enabled fiber optic system is also measured mathemat

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3

Kim, Sooyeon, Chan-Gyu Choi, Sang-Rok Moon, et al. "Packaging of an Amplifier Module for Sub-THz Wireless Transmission Based on Photonics." Journal of Electromagnetic Engineering and Science 23, no. 6 (2023): 470–81. http://dx.doi.org/10.26866/jees.2023.6.r.192.

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In this study, we have developed an amplifier waveguide module suitable for broadband communication in the sub-THz band. To achieve a waveguide module with excellent gain flatness characteristics, the effects of errors during the packaging procedures of the waveguide module and the space occupied by the bondwire were analyzed through an electromagnetic simulation. Furthermore, a photonics-based sub-THz wireless link with a carrier frequency of 288 GHz was established using a packaged amplifier module. The amplifier module was placed at the output of the sub-THz transmitter based on a uni-trave

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4

Saha, Bishwadeep, Sebastien Fregonese, Anjan Chakravorty, Soumya Ranjan Panda, and Thomas Zimmer. "Sub-THz and THz SiGe HBT Electrical Compact Modeling." Electronics 10, no. 12 (2021): 1397. http://dx.doi.org/10.3390/electronics10121397.

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From the perspectives of characterized data, calibrated TCAD simulations and compact modeling, we present a deeper investigation of the very high frequency behavior of state-of-the-art sub-THz silicon germanium heterojunction bipolar transistors (SiGe HBTs) fabricated with 55-nm BiCMOS process technology from STMicroelectronics. The TCAD simulation platform is appropriately calibrated with the measurements in order to aid the extraction of a few selected high-frequency (HF) parameters of the state-of-the-art compact model HICUM, which are otherwise difficult to extract from traditionally prepa

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Gao, Ying, Hongmei Xue, Long Zhang, and Enchang Sun. "UAV Trajectory Design and Power Optimization for Terahertz Band-Integrated Sensing and Communications." Sensors 23, no. 6 (2023): 3005. http://dx.doi.org/10.3390/s23063005.

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Sixth generation (6G) wireless networks require very low latency and an ultra-high data rate, which have become the main challenges for future wireless communications. To effectively balance the requirements of 6G and the extreme shortage of capacity within the existing wireless networks, sensing-assisted communications in the terahertz (THz) band with unmanned aerial vehicles (UAVs) is proposed. In this scenario, the THz-UAV acts as an aerial base station to provide information on users and sensing signals and detect the THz channel to assist UAV communication. However, communication and sens

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6

Lin, Cen, Geoffrey Ye Li, and Li Wang. "Subarray-Based Coordinated Beamforming Training for mmWave and Sub-THz Communications." IEEE Journal on Selected Areas in Communications 35, no. 9 (2017): 2115–26. http://dx.doi.org/10.1109/jsac.2017.2720038.

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7

Irizawa, Akinori, Stefano Lupi, and Augusto Marcelli. "Terahertz as a Frontier Area for Science and Technology." Condensed Matter 6, no. 3 (2021): 23. http://dx.doi.org/10.3390/condmat6030023.

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Recent theoretical and experimental research is triggering interest to technologies based on radiation in the region from ~0.1 to 20 Terahertz (THz). Today, this region of the electromagnetic (e.m.) spectrum is a frontier area for research in many disciplines. The technological roadmap of the THz radiation considers outdoor and indoor communications, security, drug detection, biometrics, food quality control, agriculture, medicine, semiconductors, and air pollution, and demands high-power and sub-ps compact sources, modern detectors, and new integrated systems. There are still many open questi

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Singh, Pankaj, Byung-Wook Kim, and Sung-Yoon Jung. "Compressed Detection for Pulse-Based Communications in the Terahertz Band." Wireless Communications and Mobile Computing 2018 (September 24, 2018): 1–10. http://dx.doi.org/10.1155/2018/2408496.

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Terahertz (THz) band (0.1-10 THz)-based electromagnetic communications are envisioned as a key technology to enable future high-data-rate short-range ultrabroadband communications. However, one of the fundamental bottlenecks is the efficiency of the analog-to-digital converters (ADCs) considering the formidable challenge of sampling the signal at the Nyquist rate eventually increasing transceiver design complexity. The Compressed sensing (CS) framework enables the successful reconstruction of sparse signals from a small set of projections onto a random vector which would lead to sub-Nyquist ra

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9

Hu, Zhenzhen, Yong Xu, Yonghong Deng, and Zhongpei Zhang. "Distance-Enhanced Hybrid Hierarchical Modulation and QAM Modulation Schemes for UAV Terahertz Communications." Drones 8, no. 7 (2024): 300. http://dx.doi.org/10.3390/drones8070300.

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Unmanned aerial vehicles (UAVs) are extensively employed in pursuit, rescue missions, and agricultural applications. These operations require substantial data and video transmission, demanding significant spectral resources. The ultra-broad bandwidth of 0.1–10 THz in the Terahertz (THz) frequency range is essential for future UAV-based wireless communications. However, the available bandwidth in the THz frequency spectrum varies with transmission distance. To enhance spectral efficiency over this variable bandwidth, we propose using hierarchical modulation (HM) in the overlapped spectrum and t

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10

Yu, Bo, Yu Ye, Xuan Ding, et al. "Ortho-Mode Sub-THz Interconnect Channel for Planar Chip-to-Chip Communications." IEEE Transactions on Microwave Theory and Techniques 66, no. 4 (2018): 1864–73. http://dx.doi.org/10.1109/tmtt.2017.2779496.

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11

Kumar, Rajnish, and Shlomi Arnon. "DNN Beamforming for LEO Satellite Communication at Sub-THz Bands." Electronics 11, no. 23 (2022): 3937. http://dx.doi.org/10.3390/electronics11233937.

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The 6G communication system will be designed at sub-THz frequencies due to increasing demand in data rates, emerging new applications and advanced communication technologies. These high-performing systems will heavily rely on artificial intelligence (AI) for efficient and robust design of transceivers. In this work, we propose a deep neural network (DNN) beamformer that will replace the use of phase shifters for a massive array of antenna elements employed at the ground station for wideband LEO satellite communication at sub-THz bands. We show that the signal processing algorithm employed usin

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12

Vafapour, Zohreh. "Cost-Effective Bull’s Eye Aperture-Style Multi-Band Metamaterial Absorber at Sub-THz Band: Design, Numerical Analysis, and Physical Interpretation." Sensors 22, no. 8 (2022): 2892. http://dx.doi.org/10.3390/s22082892.

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Theoretical and numerical studies were conducted on plasmonic interactions at a polarization-independent semiconductor–dielectric–semiconductor (SDS) sandwiched layer design and a brief review of the basic theory model was presented. The potential of bull’s eye aperture (BEA) structures as device elements has been well recognized in multi-band structures. In addition, the sub-terahertz (THz) band (below 1 THz frequency regime) is utilized in communications and sensing applications, which are in high demand in modern technology. Therefore, we produced theoretical and numerical studies for a THz

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13

Hasan, Muhammad Mahmudul, Chunlei Wang, Nezih Pala, and Michael Shur. "Diamond for High-Power, High-Frequency, and Terahertz Plasma Wave Electronics." Nanomaterials 14, no. 5 (2024): 460. http://dx.doi.org/10.3390/nano14050460.

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High thermal conductivity and a high breakdown field make diamond a promising candidate for high-power and high-temperature semiconductor devices. Diamond also has a higher radiation hardness than silicon. Recent studies show that diamond has exceptionally large electron and hole momentum relaxation times, facilitating compact THz and sub-THz plasmonic sources and detectors working at room temperature and elevated temperatures. The plasmonic resonance quality factor in diamond TeraFETs could be larger than unity for the 240–600 GHz atmospheric window, which could make them viable for 6G commun

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14

Aqlan, Basem, Mohamed Himdi, Hamsakutty Vettikalladi, and Laurent Le-Coq. "Experimental Realization of Sub-THz Circularly Polarized Antenna Based on Metasurface Superstrate at 300 GHz." Materials 14, no. 17 (2021): 4796. http://dx.doi.org/10.3390/ma14174796.

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This communication presents a low-profile fully metallic high gain circularly polarized resonant cavity antenna, with a novel single-layer metasurface as superstrate operating at 300 GHz. The unit cell of the metallic metasurface layer consists of perforated grids of hexagonal and octagonal-shaped radiating apertures. The metasurface superstrate layer acts as a polarization convertor from linear-to-circular, which provides left-handed circularly polarized (LHCP) radiation. For simplicity and less design difficulty, a low cost laser cutting brass technology is proposed to design the antenna at

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15

De Beelde, Brecht, Emmeric Tanghe, Claude Desset, André Bourdoux, David Plets, and Wout Joseph. "Office Room Channel Modeling and Object Attenuation at Sub-THz Frequencies." Electronics 10, no. 14 (2021): 1725. http://dx.doi.org/10.3390/electronics10141725.

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Large bandwidths are needed to meet the high-throughput requirements of future wireless communication systems. These larger bandwidths are available at mmWave and sub-THz frequencies, such as the V-band ranging from 50 to 75 GHz and the D-band ranging from 110 to 170 GHz. In this paper, we present channel measurements in an office environment, covering the full D-band. Line-of-Sight (LOS) path loss (PL) is modeled as a function of frequency and distance. Both a single-frequency floating-intercept and multi-frequency alpha-beta-gamma model provide a good fit to the measured LOS PL data. Attenua

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16

Paoloni, Claudio. "Sub-THz Wireless Transport Layer for Ubiquitous High Data Rate." IEEE Communications Magazine 59, no. 5 (2021): 102–7. http://dx.doi.org/10.1109/mcom.001.2000326.

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17

Aqlan, Basem, Mohamed Himdi, Laurent Le Coq, and Hamsakutty Vettikalladi. "Sub-THz Circularly Polarized Horn Antenna Using Wire Electrical Discharge Machining for 6G Wireless Communications." IEEE Access 8 (2020): 117245–52. http://dx.doi.org/10.1109/access.2020.3003853.

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18

Nisamol, Thevaruparambil Abdulnazer, Kunnath Kodakkat Ansha, and Parambil Abdulla. "DESIGN OF SUB-THZ BEAM SCANNING ANTENNA USING LUNEBURG LENS FOR 5G COMMUNICATIONS OR BEYOND." Progress In Electromagnetics Research C 99 (2020): 179–91. http://dx.doi.org/10.2528/pierc19121101.

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19

Guan, Xiaotong, Jiayi Zhang, Wenjie Fu, et al. "Frequency Tuning Characteristics of a High-Power Sub-THz Gyrotron with Quasi-Optical Cavity." Electronics 10, no. 5 (2021): 526. http://dx.doi.org/10.3390/electronics10050526.

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Motivated by some emerging high-frequency applications, a high-power frequency-tunable sub-THz quasi-optical gyrotron cavity based on a confocal waveguide is designed in this paper. The frequency tuning characteristics of different approaches, including magnetic field tuning, mirror separation adjustment, and hybrid tuning, have been investigated by particle-in-cell (PIC) simulation. Results predict that it is possible to realize a smooth continuous frequency tuning band with an extraordinarily broad bandwidth of 41.55 GHz, corresponding to a relative bandwidth of 18.7% to the center frequency

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20

Jang, Kwang-Ho, Jong-Hyun Kim, Geun-Ju Kim, Jung-Il Kim, and Jin-Joo Choi. "Experiments of Sub-THz Wave Folded Waveguide Traveling-Wave Tube Amplifier." Journal of Electromagnetic Engineering and Science 23, no. 2 (2023): 42–48. http://dx.doi.org/10.26866/jees.2023.2.r.160.

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This study showed the possibility of using a sub-terahertz (THz) traveling-wave tube (TWT) via measuring the transmission characteristics and TWT performance of the circuit by applying X-ray LIGA, a micro-fabrication process, to the interaction circuit. The applied circuit type, an E-bend folded waveguide, is a simple structure most suitable for lithography. A total of three applied frequencies were used the W-band, G-band, and 850 GHz. Among the manufactured circuits, the W-band circuit was applied to the TWT, one of the vacuum electronics devices (VEDs). This was done to prove the manufactur

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21

Neelakanta, Perambur, and Dolores De Groff. "Conceiving Inferential Prototypes of MIMO Channel Models via Buckingham’s Similitude Principle for 30+ GHz through THz Spectrum." Transactions on Networks and Communications 9, no. 3 (2021): 1–35. http://dx.doi.org/10.14738/tnc.93.10214.

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Facilitating newer bands of ‘unused’ segments (windows) of RF spectrum falling in the mm-wave range (above 30+ GHz) and seeking usable stretches across unallocated THz spectrum, could viably be considered for Multiple Input Multiple Output (MIMO) communications. This could accommodate the growing needs of multigigabit 3G/4G applications in outdoor-based backhauls in picocellular networks and in indoor-specific multimedia networking. However, in contrast with cellular and Wi-Fi, wireless systems supporting sub-mm wavelength transreceive communications in the outdoor electromagnetic (EM) ambient

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22

Trinh, Van-Son, Jeong-Moon Song, and Jung-Dong Park. "A 280 GHz 30GHz Bandwidth Cascaded Amplifier Using Flexible Interstage Matching Strategy in 130 nm SiGe Technology." Electronics 11, no. 19 (2022): 3045. http://dx.doi.org/10.3390/electronics11193045.

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This paper presents a 280 GHz amplifier design strategy for a robust multistage amplifier in a sub-Terahertz (sub-THz) regime in 130 nm SiGe technology. The presented 280 GHz amplifier consists of 14 stages of the cascaded common emitter (CE) amplifier which offers a compact and improved-noise design due to the absence of the area-expensive and lossy baluns at such high frequencies. The interstage-matching network was flexibly constructed with two separate resonant tanks using metal–insulator–metal (MIM) capacitors and microstrip transmission lines (MSTLs) between each stage. The measured ampl

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23

Gupta, Jay, Dhaval Pujara, and Jorge Teniente. "Profiled Horn Antenna with Wideband Capability Targeting Sub-THz Applications." Electronics 10, no. 4 (2021): 412. http://dx.doi.org/10.3390/electronics10040412.

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This paper proposes a wideband profiled horn antenna designed using the piecewise biarc Hermite polynomial interpolation and validated experimentally at 55 GHz. The proposed design proves S11 and directivity better than −22 dB and 25.5 dB across the entire band and only needs 3 node points if compared with the well-known spline profiled horn antenna. Our design makes use of an increasing radius and hence does not present non-accessible regions from the aperture, allowing its fabrication with electro erosion techniques especially suitable for millimeter and submillimeter wavelengths.

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24

Chen, Lili, Samir Nooshabadi, Farzad Khoeini, Zainulabideen Khalifa, Bahareh Hadidian, and Ehsan Afshari. "An ultra-fast frequency shift mechanism for high data-rate sub-THz wireless communications in CMOS." Applied Physics Letters 118, no. 24 (2021): 242103. http://dx.doi.org/10.1063/5.0055503.

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25

Lesnov, I. V., G. M. Bubnov, and V. F. Vdovin. "Investigation of the influence of the location on the rate of Sub THz space communications channels." EPJ Web of Conferences 195 (2018): 09004. http://dx.doi.org/10.1051/epjconf/201819509004.

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26

Saeidi, Tale, Sahar Saleh, Nick Timmons, et al. "Meta Surface-Based Multiband MIMO Antenna for UAV Communications at mm-Wave and Sub-THz Bands." Drones 8, no. 8 (2024): 403. http://dx.doi.org/10.3390/drones8080403.

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Unmanned aerial vehicles (UAVs) need high data rate connectivity, which is achievable through mm-waves and sub-THz bands. The proposed two-port leaky wave MIMO antenna, employing a coplanar proximity technique that combines capacitive and inductive loading, addresses this need. Featuring mesh-like slots and a vertical slot to mitigate open-stopband (OSB) issues, the antenna radiates broadside and bidirectionally. H-shaped slots on a strip enhance port isolation, and a coffee bean metasurface (MTS) boosts radiation efficiency and gain. Simulations and experiments considering various realistic s

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27

Zaman, Abdullah M., Yuichi Saito, Yuezhen Lu, et al. "Ultrafast modulation of a THz metamaterial/graphene array integrated device." Applied Physics Letters 121, no. 9 (2022): 091102. http://dx.doi.org/10.1063/5.0104780.

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We report on the ultrafast modulation of a graphene loaded artificial metasurface realized on a SiO2/Si substrate by near-IR laser pump, detected via terahertz probe at the resonant frequency of ∼0.8 THz. The results have been acquired by setting the Fermi energy of graphene at the Dirac point via electrostatic gating and illuminating the sample with 40 fs pump pulses at different fluences, ranging from 0.9 to 0.018 mJ/cm2. The sub-ps conductivity rising time was attributed to the combined effect of the ultrafast generation of hot carriers in graphene and electron–hole generation in silicon. I

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28

Chen, Zhiheng, Pei Liu, and Kehao Wang. "Imbalanced Learning-Enhanced Beam Codebooks towards Imbalanced User Distribution in Millimeter Wave and Terahertz Massive MIMO Systems." Electronics 12, no. 23 (2023): 4768. http://dx.doi.org/10.3390/electronics12234768.

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Millimeter wave (mmWave) and terahertz (THz) massive MIMO architectures are pivotal in the advancement of mobile communications. These systems conventionally utilize codebooks to facilitate initial connection and to manage information transmission tasks. Traditional codebooks, however, are typically composed of numerous single-lobe beams, thus incurring substantial beam training overhead. While neural network-based approaches have been proposed to mitigate the beam training load, they sometimes fail to adequately consider the minority users dispersed across various regions. The fairness of the

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29

Koda, Yusuke, Norichika Ohmi, Hiroaki Endo, and Hiroshi Harada. "95 GHz Indoor Propagation Measurement and 3GPP-Compatible Channel Model for Sub-THz Indoor Short-Range Communications." IEEE Journal of Microwaves 5, no. 3 (2025): 583–99. https://doi.org/10.1109/jmw.2025.3562285.

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30

Shah, Syed Hashim Ali, Sundar Aditya, and Sundeep Rangan. "Power-Efficient Beam Tracking During Connected Mode DRX in mmWave and Sub-THz Systems." IEEE Journal on Selected Areas in Communications 39, no. 6 (2021): 1711–24. http://dx.doi.org/10.1109/jsac.2021.3071791.

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31

Miretti, Lorenzo, Thomas Kühne, Alper Schultze, et al. "Little or No Equalization is Needed in Energy-Efficient Sub-THz Mobile Access." IEEE Communications Magazine 62, no. 2 (2024): 94–100. http://dx.doi.org/10.1109/mcom.001.2200464.

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32

Beschastnyi, Vitalii, Egor Machnev, Darya Ostrikova, Yuliya Gaidamaka, and Konstantin Samouylov. "Coverage, Rate, and Last Hop Selection in Multi-Hop Communications in Highway Scenarios." Mathematics 11, no. 1 (2022): 26. http://dx.doi.org/10.3390/math11010026.

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The recent 3GPP initiative to extend IAB technology to mobile nodes in recently stated Release 18 opens up new opportunities for services operators in highway scenarios, where the extreme density of base stations (BS) is required to deliver uninterrupted coverage. The latter problem is specifically important for millimeter wave (mmWave) and future sub-terahertz (sub-THz) deployments. However, in such systems, there are inherent trade-offs between the rate provided over the multi-hop chain, the so-called “bridge”, and the inter-site distance. One of the critical factors involved in this trade-o

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33

Khan, Aafreen, Anwar Ahmad, and Maksud Alam. "High Gain Metamaterial Implemented Antenna Design with Circular Polarization for mm-Wave 5G and 6G Sub-THz Communication." December 2023 5, no. 4 (2023): 423–41. http://dx.doi.org/10.36548/jei.2023.4.005.

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A high-gain metamaterial-enabled circularly polarized antenna has been proposed. Two patch structures patch A and patch B have been designed by using different shape slots. After slot etching on the patch, two different metamaterial techniques were used. Circular metamaterial (MTM) was implemented for Patch A, while rectangular MTM was used for Patch B. The implementation of MTM resulted in increased antenna gain, as well as improvements in impedance bandwidth RL and AR. So, in the proposed article two antenna structures ANT-A and ANT-B, are presented. The maximum gain achieved for ANT-A is 34

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Surma, Mateusz, Mateusz Kaluza, Patrycja Czerwińska, Paweł Komorowski, and Agnieszka Siemion. "Neural-network based approach to optimize THz computer generated holograms." Photonics Letters of Poland 13, no. 4 (2021): 88. http://dx.doi.org/10.4302/plp.v13i4.1124.

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Terahertz (THz) optics often encounters the problem of small f number values (elements have relatively small diameters comparing to focal lengths). The need to redirect the THz beam out of the optical axis or form particular intensity distributions resulted in the application of iterative holographic methods to design THz diffractive elements. Elements working on-axis do not encounter significant improvement while using iterative holographic methods, however, for more complicated distributions the difference becomes meaningful. Here, we propose a totally different approach to design THz hologr

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Li, Jinfeng, and Haorong Li. "Finite-element Adaptive Meshing Statistics of Liquid Crystal Coaxial Phase Shifters for mmW Electronics and THz Photonics Beyond Display: A Comparative Study." Photonics Letters of Poland 16, no. 3 (2024): 40–42. http://dx.doi.org/10.4302/plp.v16i3.1275.

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Sub-mmW and THz frequencies offer ultra-high-speed communications for next-generation 5G/6G networks, wherein research advancing the understanding will benefit the electronics and photonics community. Specifically, meshing resolutions across varying frequency ranges and material properties are central to the solution accuracy, reliability, and cost (memory and time) of computational mmW and THz simulations, particularly for the emerging reconfigurable coaxial phase shifters employing nematic liquid crystals (LCs) as tunable media. In the present study, a comparative meshing statistics analysis

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Gil, Gye-Tae, Ju Yong Lee, Hoon Kim, and Dong-Ho Cho. "Comparison of UCA-OAM and UCA-MIMO systems for sub-THz band line-of-sight spatial multiplexing transmission." Journal of Communications and Networks 23, no. 2 (2021): 83–90. http://dx.doi.org/10.23919/jcn.2021.000013.

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Bengtson, Mikkel, Yejian Lyu, and Wei Fan. "Long-range VNA-based channel sounder: Design and measurement validation at MmWave and sub-THz frequency bands." China Communications 19, no. 11 (2022): 47–59. http://dx.doi.org/10.23919/jcc.2022.11.004.

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38

Wan, Qian, Jun Fang, Zhi Chen, and Hongbin Li. "Hybrid Precoding and Combining for Millimeter Wave/Sub-THz MIMO-OFDM Systems With Beam Squint Effects." IEEE Transactions on Vehicular Technology 70, no. 8 (2021): 8314–19. http://dx.doi.org/10.1109/tvt.2021.3093095.

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Lyu, Yejian, Zhiqiang Yuan, Mengting Li, Allan Wainaina Mbugua, Pekka Kyösti, and Wei Fan. "Enabling Long-Range Large-Scale Channel Sounding at Sub-THz Bands: Virtual Array and Radio-Over-Fiber Concepts." IEEE Communications Magazine 62, no. 2 (2024): 16–22. http://dx.doi.org/10.1109/mcom.001.2200411.

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40

Avrutin, E. A., R. M. De La Rue, T. F. Krauss, H. Pottinger, J. M. Arnold, and J. H. Marsh. "Analysis of harmonic (sub)THz passive mode-locking in monolithic compound cavity Fabry-Perot and ring laser diodes." IEE Proceedings - Optoelectronics 146, no. 1 (1999): 55–61. http://dx.doi.org/10.1049/ip-opt:19990309.

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Aghazadeh Ayoubi, Reza, and Umberto Spagnolini. "Performance of Dense Wireless Networks in 5G and beyond Using Stochastic Geometry." Mathematics 10, no. 7 (2022): 1156. http://dx.doi.org/10.3390/math10071156.

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Device density in cellular networks is expected to increase considerably in the near future. Accordingly, the access point (AP) will be equipped with massive multiple-input multiple-output (mMIMO) antennas, using collimated millimeter-wave (mmW) and sub-THz communications, and increasing the bandwidth to accommodate the growing data rate demands. In this scenario, interference plays a critical role and, if not characterized and mitigated properly, might limit the performances of the network. In this context, this paper derives the statistical properties of the aggregated interference power for

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Aslam, Muhammad Muzamil, Liping Du, Xiaoyan Zhang, Yueyun Chen, Zahoor Ahmed, and Bushra Qureshi. "Sixth Generation (6G) Cognitive Radio Network (CRN) Application, Requirements, Security Issues, and Key Challenges." Wireless Communications and Mobile Computing 2021 (October 13, 2021): 1–18. http://dx.doi.org/10.1155/2021/1331428.

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Recently, 5G installation has been started globally. Different capabilities are in the consistent procedure, like ultrareliability, mass connectivity, and specific low latency. Though, 5G is insufficient to meet all the necessities of the future technology in 2030 and so on. Next generation information and communication technology is playing an important role in attraction of researchers, industries, and technical people. With respect to 5G networks, sixth-generation (6G) CR networks are anticipated to familiarize innovative use cases and performance metrics, such as to offer worldwide coverag

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Titov, Vladimir, Andrey Ploskih, and Nikita Ryskin. "Study of Beam–Wave Interaction in a Sub-THz Traveling Wave Tube with a Converging Sheet Electron Beam Focused by a Uniform Magnetic Field." Electronics 11, no. 24 (2022): 4208. http://dx.doi.org/10.3390/electronics11244208.

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A traveling-wave tube (TWT) with a sheet electron beam and staggered double-grating slow-wave structure (SWS) is a promising high-power, wideband terahertz amplifier. In such tubes, electron-optical systems (EOSs) with a converging sheet beam are mostly used, which allow a reduction of the cathode load, increase the lifetime, and enable operation in a continuous-wave (CW) mode. This paper presents the results of a 3D particle-in-cell (PIC) simulation of the 0.22 THz TWT driven with a converged sheet beam, which is compressed to less than 100 μm thickness in the EOS with a magnetically shielded

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Torabi, Yalda, Gholamreza Dadashzadeh, Milad Hadeie, Homayoon Oraizi, and Ali Lalbakhsh. "A Wide-Angle Scanning Sub-Terahertz Leaky-Wave Antenna Based on a Multilayer Dielectric Image Waveguide." Electronics 10, no. 17 (2021): 2172. http://dx.doi.org/10.3390/electronics10172172.

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This paper presents a new layered dielectric leaky-wave antenna (LWA) for the sub-terahertz (THz) frequency range capable of efficient operation at the broadside with a wide beam scanning angle and stable gain. It consists of a conductor-backed alumina dielectric image line (DIL) with two different dielectric layers mounted on top of each other for performance improvement. The upper layer is a high permittivity RO6010 substrate to enhance the directivity as a superstrate and the lower layer is a low-permittivity RT/duroid 5880 substrate stacked on the alumina DIL to prevent the probable excita

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Ma, He, Yu Wang, Rong Lu, et al. "A flexible, multifunctional, active terahertz modulator with an ultra-low triggering threshold." Journal of Materials Chemistry C 8, no. 30 (2020): 10213–20. http://dx.doi.org/10.1039/d0tc02446e.

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Flexible, multifunctional, active THz modulators with ultra-low triggering threshold were developed by aligned carbon nanotube thin films coated with VO<sub>2</sub>. These active THz modulators find applications in THz communication and THz imaging.

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Ferraro, Antonio, Dimitrios C. Zografopoulos, Roberto Caputo, and Romeo Beccherelli. "Terahertz polarizing component on cyclo-olefin polymer." Photonics Letters of Poland 9, no. 1 (2017): 2. http://dx.doi.org/10.4302/plp.v9i1.699.

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Wire-grid polarizers constitute a traditional component for the control of polarization in free-space devices that operate in a broad part of the electromagnetic spectrum. Here, we present an aluminium-based THz wire grid polarizer, fabricated on a sub-wavelength thin flexible and conformal foil of Zeonor polymer having a thickness of 40um. The fabricated device,characterized by means of THz time-domain spectroscopy, exhibitsa high extinction ratio between 30 and 45dB in the 0.3-2.1THz range. The insertion losses oscillate between 0 and 1.1dB andthey stemalmost exclusively from moderate Fabry-

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Park, Eiyong, Junghyeon Kim, Minjae Lee, et al. "Low-cost large-area 100 GHz intelligent reflective surface: electrically column control of screen-printable high phase changing ratio vanadium dioxides." Nanophotonics, April 15, 2025. https://doi.org/10.1515/nanoph-2025-0006.

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Abstract In this paper, we propose for the first time 100 GHz intelligent reflective surface (IRS) using screen-printable, high phase changing ratio vanadium dioxide (VO2). Sub-THz communications offer advantages such as ultra-high speed and ultra-low latency, it increases communication challenges due to path losses and non-line-of-sight (NLOS) problems. IRS is a representative solution to this NLOS problem. Conventional IRSs using PIN and varactor diodes have difficulty covering the sub-THz band due to the operating frequency limitations of these tuning elements. In this study, we successfull

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Sharma, Vaishali, Navneet Garg, Sanjeev Sharma, and Vimal Bhatia. "A mini-review of signal processing techniques for RIS-assisted near field THz communication." Frontiers in Signal Processing 3 (January 8, 2024). http://dx.doi.org/10.3389/frsip.2023.1297945.

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Reflecting Intelligent Surfaces (RISs) are reshaping the landscape of wireless communications, particularly in the terahertz (THz) frequency bands, offering promising solutions to inherent challenges in the bands. THz communication boasts bandwidths exceeding 100 GHz, leading to data rates potentially in the terabits per second (Tbps) range, thereby making it an attractive proposition for wireless communications, imaging, and sensing. However, benefits come with challenges, including significant molecular absorption, scattering, diffraction, and hardware limitations. Moreover, as bandwidth in

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Latifi, Seyed Mostafa, Pouya Torkaman, Esther García‐Tuñón, and Shang‐Hua Yang. "Refractive Index Engineering of 3D‐Printing Terahertz Composite Materials." Advanced Materials Technologies, April 22, 2025. https://doi.org/10.1002/admt.202500344.

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AbstractTerahertz (THz) technology presents significant potential in non‐invasive imaging, spectroscopy, and high‐speed wireless communications. With the recent maturation of active THz devices, passive THz components are becoming increasingly important for enhancing system performance and broadening application scopes. However, the functionality of existing THz passive devices is constrained by materials and manufacturing limitations. To address these challenges, a 3D printable, low‐loss THz composite material with a widely controllable refractive index and sub‐wavelength manufacturing precis

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Zhinuk, Fariha, Anna Gaydamaka, Dmitri Moltchanov, and Yevgeni Koucheryavy. "Spectral-Based Proactive Blockage Detection for Sub-THz Communications." IEEE Communications Letters, 2024, 1. http://dx.doi.org/10.1109/lcomm.2024.3397743.

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