Journal of Infrared, Millimeter, and Terahertz Waves最新文献_第6页

Non-adiabatic Non-axisymmetric Electron-Optic Systems for Multi-mirror and Multi-barrel Gyrotrons 用于多镜和多管陀螺仪的非绝热非轴对称电子光学系统

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-12-22 DOI: 10.1007/s10762-023-00956-9

A. L. Goldenberg, M. Glyavin, K. Leshcheva, V. Manuilov, I. V. Zotova

引用次数: 0

A Row Displacement Correction Algorithm for High-speed and Accurate Terahertz Raster Scanning Imaging 用于高速精确太赫兹光栅扫描成像的行位移校正算法

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-12-14 DOI: 10.1007/s10762-023-00955-w

Ting Zhu, Hao Chen, Kai Liu, Guangyou Fang, Xuequan Chen

引用次数: 0

Efficiency Enhancement of a Millimeter-Wave, Two-Beam Extended Interaction Oscillator Based on All-Period Field Optimization 基于全周期场优化的毫米波双光束扩展交互振荡器的效率提升

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-12-13 DOI: 10.1007/s10762-023-00954-x

Xinyue Jiang, Liangjie Bi, Hailong Li, Bin Wang, L. Meng, Yong Yin

引用次数: 0

A Dual Band 28/38 GHz Metamaterial Absorber for 5G Applications 用于 5G 应用的 28/38 GHz 双频超材料吸收器

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-12-08 DOI: 10.1007/s10762-023-00948-9

Mohamed Edries, Hesham A. Mohamed, Ahmed A. Ibrahim

{"title":"A Dual Band 28/38 GHz Metamaterial Absorber for 5G Applications","authors":"Mohamed Edries, Hesham A. Mohamed, Ahmed A. Ibrahim","doi":"10.1007/s10762-023-00948-9","DOIUrl":"https://doi.org/10.1007/s10762-023-00948-9","url":null,"abstract":"A dual-band metamaterial absorber (MMA) for fifth-generation (5G) applications is discussed in this work. The suggested absorber works at frequency bands of 28 GHz and 38 GHz. The suggested MMA unit cell with a size of 5.8 mm × 5.8 mm (0.54 λ0 × 0.54 λ0 at 28 GHz) is designed on 1.5 mm (0.14 λ0) low-cost FR4 substrate and composed of two metallic ring resonators. The suggested MMA is investigated to validate its performance for different polarization for transverse electric (TE) and transverse magnetic (TM). Both normal and oblique angles are studied. The MMA has a simple structure with a compact size. Different parameters such as the currents, electric field distributions, and normalized impedance are studied. The array of 10 × 10 unit cells is utilized to verify the simulated outcomes. The suggested MMA is fabricated and tested, and its outcomes are compared to the simulated outcomes. The MMA is operated at dual bands 28/38 GHz with high absorption rates of 98 and 98.4%, respectively, under the normal incidence for both outcomes. A good matching between the two outcomes is observed, which supports the MMA for 5G applications.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138561555","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

Reconfigurable Far-Infrared FSS Filters on Polyimide Substrate 聚酰亚胺基板上可重构远红外FSS滤波器

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-30 DOI: 10.1007/s10762-023-00953-y

Lucas Newton, Niru K. Nahar

引用次数: 0

Terahertz Characterization of Glass-Based Materials and Stackups for 6 G Microelectronics Packaging 用于6g微电子封装的玻璃基材料和堆叠的太赫兹特性

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-24 DOI: 10.1007/s10762-023-00951-0

Min Zhai, Pragna Bhaskar, Haolian Shi, Madhavan Swaminathan, Alexandre Locquet, D. S. Citrin

{"title":"Terahertz Characterization of Glass-Based Materials and Stackups for 6 G Microelectronics Packaging","authors":"Min Zhai, Pragna Bhaskar, Haolian Shi, Madhavan Swaminathan, Alexandre Locquet, D. S. Citrin","doi":"10.1007/s10762-023-00951-0","DOIUrl":"https://doi.org/10.1007/s10762-023-00951-0","url":null,"abstract":"Glass-based materials, including polymer/glass stack ups, are attractive structural blocks for packaging substrates supporting 5 G and 6 G microelectronic modules and components. We present the first broadband characterization of AGC Inc. EN-A1 alkali-free boroaluminosilicate glass and of Ajinomoto Build-up Film (ABF) laminated on soda-lime float glass substrate from 200 GHz to 2.5 THz with a commercial terahertz time-domain spectroscopy (THz-TDS) system. The refractive index (n(nu )), attenuation coefficient (alpha (nu )), permittivity (varepsilon '(nu )), and loss tangent (tan delta (nu )) of EN-A1 glass as well as laminated ABF are (n_mathrm{EN-A1}=2.376), (alpha _mathrm{EN-A1}=31.1) cm(^{-1}), (varepsilon '_mathrm{EN-A1}=5.64), (tan delta _mathrm{EN-A1}=0.062), and (n_textrm{ABF}= 1.9), (alpha _textrm{ABF}= 30) cm(^{-1}), (varepsilon _textrm{ABF} = 3.8), (tan delta _textrm{ABF}= 0.072), all at 1 THz. Our results validate the promising perspective of both EN-A1 glass and ABF polymer materials as microwave and THz packaging solutions.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"193 ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514195","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

Generation of Chaotic Terahertz-band Radiation Based on Frequency Multiplication in Gyrotrons 基于回旋管倍频的混沌太赫兹波段辐射的产生

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-23 DOI: 10.1007/s10762-023-00952-z

R. M. Rozental, N. S. Ginzburg, A. M. Malkin, A. S. Sergeev, I. V. Zotova

{"title":"Generation of Chaotic Terahertz-band Radiation Based on Frequency Multiplication in Gyrotrons","authors":"R. M. Rozental, N. S. Ginzburg, A. M. Malkin, A. S. Sergeev, I. V. Zotova","doi":"10.1007/s10762-023-00952-z","DOIUrl":"https://doi.org/10.1007/s10762-023-00952-z","url":null,"abstract":"We consider the possibilities of producing wideband chaotic terahertz-range radiation in gyrotrons with excitation of cyclotron harmonics. The transition to the chaotic generation mode in gyrotrons requires a significant excess of the operating current over the starting value, which excludes selective operation at cyclotron harmonics due to the intensification of mode competition. At the same time, it is attractive to use a competition-free frequency multiplication effect that arises due to the nonlinear properties of the electron beam. The implementation of the frequency multiplication regime is simplified when using low-energy electron beams. Based on the averaged model of electron-wave interaction, we simulate generation in a 250-GHz low-voltage gyrotron and demonstrate the regime of a double frequency multiplication providing 0.5 THz chaotic radiation with a bandwidth of about 20 GHz and an average power of 0.5 mW. A significant expansion of the spectrum is achieved through to additional resonant interaction at the intersection points of the dispersion characteristics of the operating mode and the electron beam at the second cyclotron harmonic.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"948 ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514198","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 of a 300 GHz Relativistic Gyrotron with an output Power of more Than 7 MW 输出功率大于7mw的300ghz相对论回旋管的设计

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-22 DOI: 10.1007/s10762-023-00950-1

A. N. Leontyev, O. P. Plankin, R. M. Rozental, E. S. Semenov

引用次数: 0

Optimum Optical Designs for Diffraction-Limited Terahertz Spectroscopy and Imaging Systems Using Off-Axis Parabolic Mirrors 使用离轴抛物面镜的有限衍射太赫兹光谱和成像系统的最佳光学设计

IF 2.9 3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-21 DOI: 10.1007/s10762-023-00949-8

Nishtha Chopra, James Lloyd-Hughes

{"title":"Optimum Optical Designs for Diffraction-Limited Terahertz Spectroscopy and Imaging Systems Using Off-Axis Parabolic Mirrors","authors":"Nishtha Chopra, James Lloyd-Hughes","doi":"10.1007/s10762-023-00949-8","DOIUrl":"https://doi.org/10.1007/s10762-023-00949-8","url":null,"abstract":"Off-axis parabolic mirrors (OAPMs) are widely used in the THz and mm-wave communities for spectroscopy and imaging applications, as a result of their broadband, low-loss operation and high numerical apertures. However, the aspherical shape of an OAPM creates significant geometric aberrations: these make achieving diffraction-limited performance a challenge, and lower the peak electric field strength in the focal plane. Here, we quantify the impact of geometric aberrations on the performance of the most widely used spectrometer designs, by using ray tracing and physical optics calculations to investigate whether diffraction-limited performance can be achieved in both the sample and the detector plane. We identify simple rules, based on marginal ray propagation, that allow spectrometers to be designed that are more robust to misalignment errors, and which have minimal aberrations for THz beams. For a given source, this allows the design of optical paths that give the smallest THz beam focal spot, with the highest THz electric field strength possible. This is desirable for improved THz imaging, for better signal-to-noise ratios in linear THz spectroscopy and optical-pump THz-probe spectroscopy, and to achieve higher electric field strengths in non-linear THz spectroscopy.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"245 ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514188","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

Terahertz Time-Domain Spectroscopy and Dispersive Fourier Transform Spectroscopy: Two Sides of the Same Coin 太赫兹时域光谱学和色散傅立叶变换光谱学:同一枚硬币的两面

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-13 DOI: 10.1007/s10762-023-00946-x

B. N. Carnio, O. Moutanabbir, A. Y. Elezzabi

引用次数: 0