Journal of Infrared, Millimeter, and Terahertz Waves最新文献_第4页

Photonic THz Beam Steering Using Fiber Chromatic Dispersion 利用光纤色度色散进行光子太赫兹光束转向

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-29 DOI: 10.1007/s10762-024-00975-0

Ming Che, Hanwei Chen, Bo Li, Haruichi Kanaya, Kazutoshi Kato

{"title":"Photonic THz Beam Steering Using Fiber Chromatic Dispersion","authors":"Ming Che, Hanwei Chen, Bo Li, Haruichi Kanaya, Kazutoshi Kato","doi":"10.1007/s10762-024-00975-0","DOIUrl":"https://doi.org/10.1007/s10762-024-00975-0","url":null,"abstract":"THz technology has the potential to revolutionize various fields, including high-speed wireless communication, medical imaging, and spectroscopy. One challenge facing THz technology, however, is the limited output power (on the order of microwatts) of photonic THz sources (e.g., uni-traveling-carrier photodiode). Researchers are therefore exploring THz beam steering techniques to maximize their power effectiveness. To this end, we propose a photonic THz beam steering method that utilizes fiber chromatic dispersion, eliminating the need for energy-consuming active electronics. This paper explains its basic operating principle, fabrication and performance analysis of the associated THz array antenna, and demonstrates the feasibility of achieving a 300 GHz beam steering within 10(^circ ) by means of dispersion-varied polarization-maintaining fibers. In conclusion, the present scheme can greatly enhance the power efficiency of photonic THz sources, and enable the potential advantages of seamless integration with fiber-optic networks, including reduced complexity, simplified operation, low power consumption, and cost-effectiveness.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"74 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ionization of a Silicon Surface Layer Induced by a High-Intensity Subpicosecond Electric Field 高强度亚皮秒电场诱导的硅表面层电离

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-28 DOI: 10.1007/s10762-024-00976-z

引用次数: 0

High Gain Diagonally-Probe-Fed Multi-Layered Dielectric Resonator Antenna Array for 77 GHz Automotive Radar Applications 用于 77 GHz 汽车雷达应用的高增益对角探针馈电多层介质谐振器天线阵列

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-27 DOI: 10.1007/s10762-024-00978-x

Sung Yong An, Boumseock Kim

{"title":"High Gain Diagonally-Probe-Fed Multi-Layered Dielectric Resonator Antenna Array for 77 GHz Automotive Radar Applications","authors":"Sung Yong An, Boumseock Kim","doi":"10.1007/s10762-024-00978-x","DOIUrl":"https://doi.org/10.1007/s10762-024-00978-x","url":null,"abstract":"This paper presents a high gain diagonally-probe-fed multi-layered dielectric resonator antenna (DPF-ML-DRA) designed for 77 GHz automotive radar applications. A comparison with the conventional probe-fed ML-DRA demonstrates that the proposed DPF-ML-DRA achieves higher antenna gain by 1 dB. The sub-array utilizing the proposed DPF-ML-DRA is tailored to meet specific radar system requirements, including a broad impedance bandwidth (> 5 GHz), high antenna gain (> 12 dBi), and wide half-power beamwidth (> ± 60°). Simulated results validate that the sub-array performance meets the aforementioned antenna requirements. To attain high azimuthal and elevational angular detecting resolution, 3 sub-arrays with 12 DF-ML-DRA for the Tx channel and 4 sub-arrays with 10 DF-ML-DRA for the Rx channel were designed and simulated. The fabricated radar system underwent field testing, demonstrating a maximum range of up to 160 m and a field of view of 120° for 100 m. Remarkably, the proposed DPF-ML-DRA exhibits equivalent radar performance while featuring a smaller form-factor compared to commercially available state-of-the-art automotive radar systems. Consequently, the proposed DPF-ML-DRA proves to be well-suited for 77 GHz automotive radar applications.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"74 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study and Experimental Validation of a 0.34 THz Double Corrugated Waveguide Interaction Structure for Backward Wave Oscillator with Sheet Electron Beam 用于片状电子束后向波振荡器的 0.34 太赫兹双波纹波导相互作用结构的研究与实验验证

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-26 DOI: 10.1007/s10762-024-00974-1

Jibran Latif, Zhanliang Wang, Atif Jameel, Muhammad Khawar Nadeem, Bilawal Ali, Uzair Shakir, Jinjun Feng, Yubin Gong

{"title":"Study and Experimental Validation of a 0.34 THz Double Corrugated Waveguide Interaction Structure for Backward Wave Oscillator with Sheet Electron Beam","authors":"Jibran Latif, Zhanliang Wang, Atif Jameel, Muhammad Khawar Nadeem, Bilawal Ali, Uzair Shakir, Jinjun Feng, Yubin Gong","doi":"10.1007/s10762-024-00974-1","DOIUrl":"https://doi.org/10.1007/s10762-024-00974-1","url":null,"abstract":"Terahertz backward wave oscillators based on double corrugated waveguides are enabling devices for modern satellite communication systems. This research focuses on the design of a 0.34 THz double corrugated waveguide-based interaction structure using a sheet beam. This choice allows the use of shorter pillars along with a narrow gap between pillar rows. Shorter pillars are easier to manufacture and a narrow gap is required for better interaction impedance. Circular beams restrict the use of larger pillars and narrow gap between pillars. The performance of this interaction structure is compared with a folded waveguide. Under the same operating conditions involving a 20 kV beam voltage and a 30 mA beam current, the double corrugated waveguide interaction structure exhibits impressive performance in simulations, featuring an interaction impedance of 0.52 ({varOmega }) at 0.34 THz, an output power of 3.2 W, and a bandwidth extending to approximately 20 GHz. In contrast, the folded waveguide, as per simulation results, registers values of 0.43 ({varOmega }), 2.6 W, and a 12 GHz bandwidth, respectively. The proposed double corrugated waveguide-based interaction structure is fabricated using modern CNC machining. Experimental validation reinforces the effectiveness of this design, with measurements indicating reflection below −20 dB and transmission exceeding −2 dB.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"27 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139967826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harmonic Gyrotrons: Pros and Cons 谐波陀螺仪：优缺点

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-20 DOI: 10.1007/s10762-024-00972-3

S. P. Sabchevski, G. S. Nusinovich, M. Yu. Glyavin

引用次数: 0

Millimeter and Sub-millimeter Wave Transmission Through a Radome Covered by Water: The Impact of the Shape of Water 毫米波和亚毫米波通过被水覆盖的雷达罩的传输：水的形状的影响

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-02 DOI: 10.1007/s10762-024-00969-y

Paul Bouquin, Daniel Bourreau, Alain Peden

引用次数: 0

Design and Analysis of a Compact MIMO Antenna for 5G mmWave N257, N260, and N262 Band Applications 面向 5G 毫米波 N257、N260 和 N262 波段应用的紧凑型 MIMO 天线的设计与分析

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-02-01 DOI: 10.1007/s10762-024-00971-4

{"title":"Design and Analysis of a Compact MIMO Antenna for 5G mmWave N257, N260, and N262 Band Applications","authors":"","doi":"10.1007/s10762-024-00971-4","DOIUrl":"https://doi.org/10.1007/s10762-024-00971-4","url":null,"abstract":"<h3>Abstract</h3> This research presents the design and analysis of a compact MIMO antenna tailored for 5G millimeter-wave applications, specifically targeting bands N257, N260, and N262. The antenna, characterized by its straightforward design, maintains compact dimensions of 10 mm × 16 mm while delivering exceptional performance with high gain. Employing Rogers RT/Duroid 5880 substrate material with a thickness of 0.508 mm, the antenna consists of two crescent-shaped radiating elements (patches) situated on the top surface of the dielectric material, complemented by a slotted ground on the bottom. The radiating elements are fed through a 50-Ω microstrip line. Operating across three distinct bands, the antenna’s capabilities are outlined as follows: the first band spans from 27.2 to 29 GHz, centering around 28 GHz; the second band encompasses the frequency range from 34 to 40.2 GHz, with a center frequency of 39 GHz achieved through slotting crescent-shaped radiating elements; the third band, ranging from 47.5 to 51.3 GHz with a center frequency of 48.7 GHz, is attained by engraving circular slots on the ground. To validate simulation outcomes, a hardware prototype of the antenna is manufactured, showcasing excellent agreement between simulations and measurements. The antenna design is implemented using the CST Microwave Studio software tool and is benchmarked against existing literature. Key attributes of the proposed antenna include its compact size, simple geometry, wide bandwidth, and high gain. The antenna’s favorable MIMO parameters (ECC, TARC, DG, and CCL), coupled with minimal spacing between elements, position it as a promising candidate for forthcoming 5G millimeter-wave communication applications.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"4 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Standing Wave Pattern Suppression in the Terahertz Frequency Domain Spectroscopy by Means of Windowed Fourier Filtering 通过带窗傅里叶滤波抑制太赫兹频域光谱中的驻波模式

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-31 DOI: 10.1007/s10762-023-00964-9

Mikhail V. Shuba, Dalius Seliuta, Viktoriia Abramova

{"title":"Standing Wave Pattern Suppression in the Terahertz Frequency Domain Spectroscopy by Means of Windowed Fourier Filtering","authors":"Mikhail V. Shuba, Dalius Seliuta, Viktoriia Abramova","doi":"10.1007/s10762-023-00964-9","DOIUrl":"https://doi.org/10.1007/s10762-023-00964-9","url":null,"abstract":"Terahertz frequency domain spectroscopy provides a superior resolution in the broad range from 50 GHz to 5 THz. However, temporal frequency drift and the standing wave pattern in the spectrometer, which often act simultaneously, produce intensive coherent noise in the transmittance spectra of the measured samples. The paper presents a spectrum processing method allowing to reduce the coherent noise and thus significantly enhance the accuracy of spectral data analysis. The idea of the method is to remove the small-period (0.25 GHz) oscillations in the standing wave pattern of the measured signal by applying the windowed Fourier filtering. The large-period (4 GHz) oscillations in the measured spectra are broadened and then used to compensate the frequency drift of the two consecutive measurements of the signal with the sample and without it. The proposed approach is tested on the measured spectra of metamaterial and silicon wafer. Its advantage over the classical method based on the averaging of adjacent data points is confirmed. Our work benefits to optimization of the frequency domain terahertz systems and paves the way for fast and accurate analysis of spectral data.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"13 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139658972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Experiment of a Sheet Beam Gun for Extended Interaction Oscillator 用于扩展交互振荡器的片束枪的设计与实验

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-29 DOI: 10.1007/s10762-024-00970-5

Tianzhong Zhang, Xinjian Niu, Yinghui Liu, Lin Xu, Guo Guo, Jing Zeng, Jin Xu

引用次数: 0

Terahertz Detection of Acid Blue 113 Dye Using Hybrid Hydrogels 利用混合水凝胶进行酸性蓝 113 染料的太赫兹检测

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-26 DOI: 10.1007/s10762-024-00968-z

Itzel M. Garnica-Palafox, Amado M. Velázquez-Benítez, Francisco Sánchez-Arévalo, Naser Qureshi

{"title":"Terahertz Detection of Acid Blue 113 Dye Using Hybrid Hydrogels","authors":"Itzel M. Garnica-Palafox, Amado M. Velázquez-Benítez, Francisco Sánchez-Arévalo, Naser Qureshi","doi":"10.1007/s10762-024-00968-z","DOIUrl":"https://doi.org/10.1007/s10762-024-00968-z","url":null,"abstract":"The detection of pollutant dyes in the environment, particularly in waterways, can be extended and potentially simplified using terahertz spectroscopy. The use of hydrogels to absorb these contaminants from water and create solid samples with moderate transparency at terahertz frequencies evidently facilitates spectroscopic analysis. In this study, we demonstrate that chitosan and poly(vinyl alcohol) hydrogels, as well as their cross-linked and nanocomposite hybrid blends, efficiently capture the acid blue 113 azo dye (AB113). We show that terahertz transmittance and refractive index measurements conducted on these hydrogel materials offer an effective alternative method for detecting water contaminants, especially azo dyes. The terahertz transmittance spectra provide evidence of azo dye molecules within the hydrogel membranes. Additionally, considering the alterations in the hydrogels’ refractive index due to the sorption of AB113 dye molecules, we derived an analytical model to accurately estimate the amount of dye sorbed by the polymeric networks. The findings of this study establish a practical and promising approach for both qualitative and quantitative terahertz detection of AB113 dye using hybrid hydrogels. A detailed comparison with optical and infrared spectroscopy is also provided for reference.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"6 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139583724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0