Journal of Infrared, Millimeter, and Terahertz Waves最新文献_第5页

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> <p>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.</p>","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"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":"<p>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.</p>","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"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":"<p>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.</p>","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"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

Miniaturized Multi-band Millimeter-Wave Vivaldi Antenna with Performance Optimization at 28 GHz for 5G MIMO Applications 为 5G MIMO 应用优化 28 GHz 性能的小型化多频带毫米波 Vivaldi 天线

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-12 DOI: 10.1007/s10762-024-00965-2

R. Elsharkawy, K. Hussein, A. E. Farahat

引用次数: 0

Cryogenic Fiber-coupled Electro-optic Characterization Platform for High-speed Photodiodes 用于高速光电二极管的低温光纤耦合电光表征平台

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-12 DOI: 10.1007/s10762-024-00966-1

Shekhar Priyadarshi, Hao Tian, Alexander Fernandez Scarioni, Silke Wolter, Oliver Kieler, Johannes Kohlmann, Jaani Nissilä, Mark Bieler

{"title":"Cryogenic Fiber-coupled Electro-optic Characterization Platform for High-speed Photodiodes","authors":"Shekhar Priyadarshi, Hao Tian, Alexander Fernandez Scarioni, Silke Wolter, Oliver Kieler, Johannes Kohlmann, Jaani Nissilä, Mark Bieler","doi":"10.1007/s10762-024-00966-1","DOIUrl":"https://doi.org/10.1007/s10762-024-00966-1","url":null,"abstract":"<p>We have developed a cryogenic characterization platform for ultrafast photodiodes, whose time domain responses are extracted by electro-optic sampling using femtosecond laser pulses in a pump-probe configuration. The excitation of the photodiodes with the pump beam and the electro-optic sampling crystals with the probe beam are realized in a fully fiber-coupled manner. This allows us to use the characterization platform at different temperatures, ranging from cryogenic to room temperature. As an application example, we characterize the time-domain response of commercial p-i-n photodiodes with a nominal bandwidth of 20 GHz and 60 GHz at temperatures of 4 K and 300 K and in a large parameter range of photocurrent and reverse bias. For these photodiodes, we detect frequency components up to approximately 250 GHz, while the theoretical bandwidth of our sampling method exceeds 1 THz. Our measurements demonstrate a significant excitation power and temperature dependence of the photodiodes’ ultrafast time responses, reflecting, most likely, changes in carrier mobilities and electric field screening. Since our system is an ideal tool to characterize and optimize the response of fast photodiodes at cryogenic temperatures, it has a direct impact on applications in superconducting quantum technology such as the enhancement of optical links to superconducting qubits and quantum-accurate waveform generators.</p>","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496686","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

Sub-terahertz Dual-polarized Low-loss Transmission System Using COC-Based Dielectric Waveguide 使用基于 COC 的介质波导的亚太赫兹双极化低损耗传输系统

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-10 DOI: 10.1007/s10762-024-00967-0

Huibing Chen, Haidong Chen, Chengjian Zhang, W. Che, Q. Xue

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Nondestructive Observation of Multilayered Paintings on a Single Canvas by THz Time-Domain Imaging and X-ray Fluorescence Elemental Mapping 通过太赫兹时域成像和 X 射线荧光元素图谱对单幅画布上的多层绘画进行无损观测

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-05 DOI: 10.1007/s10762-023-00963-w

Kaori Fukunaga, Yoshimi Ueno, Chihiro Watanabe, Akinobu Yanagida, S. Wakiya

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Cascaded Terahertz Parametric Generation Under Noncollinear Phase-Matching Condition 非共线相位匹配条件下的级联太赫兹参数发生器

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2024-01-03 DOI: 10.1007/s10762-023-00962-x

Sota Mine, Kodo Kawase, Kosuke Murate

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