Journal of Infrared, Millimeter, and Terahertz Waves最新文献_第7页

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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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

W-Band Low-Loss Eight-Way Radial-Waveguide Power Divider Based on Coaxial Mode Transition 基于同轴模式转换的w波段低损耗八路径向波导功率分压器

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-10 DOI: 10.1007/s10762-023-00944-z

Kaijun Song, Lijuan Zhu, Qian Li, Yong Fan

引用次数: 0

Terahertz Transmission Characteristics for UAV Swarm on Atmosphere-Limited Line-of-sight Links Under Complex Meteorological Conditions 复杂气象条件下无人机群在大气受限视距链路上的太赫兹传输特性

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-11-09 DOI: 10.1007/s10762-023-00945-y

Xiangchun Cao, Jianhong Hao, Qiang Zhao, Fang Zhang, Jieqing Fan, Bixi Xue, Zhiwei Dong

引用次数: 0

Broadband Terahertz Spectroscopy and Weak Interactions of Adenosine with Vibrational Mode Analysis 宽带太赫兹光谱和腺苷的弱相互作用与振动模式分析

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-10-20 DOI: 10.1007/s10762-023-00942-1

Jing Zhang, Zhongjie Zhu, Yu Wu, Te Ji, Jie Wang, Huachun Zhu, Weiwei Peng, Min Chen, Shaoping Li, Hongwei Zhao

引用次数: 0

Low-Loss UWB mm-Wave Monopole Antenna Using Patch Size Enhancement for Next-Generation (5G and Beyond) Communications 用于下一代(5G及以后)通信的贴片尺寸增强的低损耗超宽带毫米波单极天线

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-10-19 DOI: 10.1007/s10762-023-00941-2

Simerpreet Singh, Gaurav Sethi, Jaspal Singh Khinda

引用次数: 0

Dual-Band (28/38 GHz) Compact MIMO Antenna System for Millimeter-Wave Applications 用于毫米波应用的双频(28/38 GHz)紧凑型MIMO天线系统

3区工程技术

Journal of Infrared, Millimeter, and Terahertz Waves Pub Date : 2023-10-18 DOI: 10.1007/s10762-023-00943-0

Rania R. Elsharkawy, Khalid.F. A. Hussein, Asmaa E. Farahat

{"title":"Dual-Band (28/38 GHz) Compact MIMO Antenna System for Millimeter-Wave Applications","authors":"Rania R. Elsharkawy, Khalid.F. A. Hussein, Asmaa E. Farahat","doi":"10.1007/s10762-023-00943-0","DOIUrl":"https://doi.org/10.1007/s10762-023-00943-0","url":null,"abstract":"Abstract The present work proposes a novel design of a dual-band-printed antenna for operation at the millimeter-wave frequencies 28 and 38 GHz that are utilized for the modern and future generations of mobile communications. The antenna is composed of two radiating elements. The first element is the main patch that is fed through a microstrip line with inset feed, and the second element is a parasitic element that is fed through capacitive coupling with the main patch. The design parameters of the proposed antenna are optimized through a complete parametric study to give excellent impedance matching at 28 GHz over the band 27.7–28.3 GHz and at 38 GHz over the band 37.7–38.3 GHz. The surface current distributions at the two operational frequencies are investigated. The designed antenna is used to construct a four-port efficient multi–input–multi–output (MIMO) system. The MIMO system performance is investigated regarding the envelope correlation coefficient (ECC), diversity gain (DG), and the channel capacity loss (CCL) showing very good performance. The single-element antenna and the MIMO are fabricated and experimentally evaluated showing excellent impedance matching over the lower and higher frequency bands, which come in agreement with the simulation results. It is shown that the antenna produces maximum gain of 7.4 and 8.1 dBi at 28 and 38 GHz, respectively. The average radiation efficiencies of the proposed antenna are 88% and 88.8% over the lower and higher frequency bands, respectively. In addition, the coupling coefficients between the MIMO antenna systems are measured experimentally showing very low coupling values resulting in an efficient MIMO system that is suitable for future millimeter-wave (mm-wave) applications.","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135883305","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