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2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)最新文献

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Design of Balanced Mixer with 180 Degrees Hybrid Network Based on Cruciform Coupler 基于十字耦合器的180度混合网络平衡混合器设计
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015820
Xuesong Shi, Xiaowei Zhu
{"title":"Design of Balanced Mixer with 180 Degrees Hybrid Network Based on Cruciform Coupler","authors":"Xuesong Shi, Xiaowei Zhu","doi":"10.1109/UCMMT45316.2018.9015820","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015820","url":null,"abstract":"In this paper, the balanced mixer with 180 degrees hybrid network is proposed at Q-band. The hybrid network is achieved by cruciform directional coupler on SIW and a 90 degrees delay microstrip line. Based on this structure, the isolation and conversion bandwidth of mixer has been improved significantly. Finally, the measurement indicates that mixer's center frequency is 33 GHz, conversion loss bandwidth (15 dB) is 3.3 GHz and the peak amplitude is 9.3 dB (at 32.75 GHz), isolation between RF and LO greater than 15 dB. Meanwhile, the mixer has acceptable linearity that IP1dB is nearly 4.8 dBm.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130729668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Copyright 版权
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015679
{"title":"Copyright","authors":"","doi":"10.1109/ucmmt45316.2018.9015679","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015679","url":null,"abstract":"","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133487512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analyses of Coupling through CD-ROM and Display Screen under Electromagnetic Illumination 电磁照明下光盘与显示屏耦合分析
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015925
R. Xiong, Wen Yang, Zhengyu Huang
{"title":"Analyses of Coupling through CD-ROM and Display Screen under Electromagnetic Illumination","authors":"R. Xiong, Wen Yang, Zhengyu Huang","doi":"10.1109/ucmmt45316.2018.9015925","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015925","url":null,"abstract":"In this paper, the finite-difference time-domain (FDTD) method is used to study the coupling through CD-ROM and display screen on industrial controlling computers under electromagnetic illumination. The hole of CD-ROM and display screen on the computer enclosure is simulated and the coupled electromagnetic interference (EMI) into the industrial controlling computer is analyzed. Ultra-wide Bandwidth (UWB) is used here as the source, and both the time-domain waveforms and field distribution in the computer are all monitored.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121251792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Ka-Band Active Imaging Wideband Transceiver Module ka波段有源成像宽带收发模块的设计
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015711
Jin-Woo Chang, Liang Li, Yaxin Ren
{"title":"Design of Ka-Band Active Imaging Wideband Transceiver Module","authors":"Jin-Woo Chang, Liang Li, Yaxin Ren","doi":"10.1109/UCMMT45316.2018.9015711","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015711","url":null,"abstract":"Based on the background of millimeter wave active imaging, a Ka-band wideband transceiver module was developed. The design process fully considers the system indexes and cost factors. Through experimental tests, in the 32-37GHz operating frequency range, the output power reaches 22dBm, the power flatness is within 1dB, the spurious suppression is greater than - 70dBc, and the phase noise is degraded by 12dB. The transceiver system has a wide range of applications in millimeter-wave systems by the unique low cost design.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122480662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hyperbolic Metamaterials for Collimation and Subwavelength Focusing 准直和亚波长聚焦的双曲型超材料
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015757
Mina Ren, Yanhong Liu, L. Dong, Lixiang Liu, F. Deng, Yun-long Shi
{"title":"Hyperbolic Metamaterials for Collimation and Subwavelength Focusing","authors":"Mina Ren, Yanhong Liu, L. Dong, Lixiang Liu, F. Deng, Yun-long Shi","doi":"10.1109/UCMMT45316.2018.9015757","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015757","url":null,"abstract":"Collimation and focusing are generally more common in optics field. We demonstrate hyperbolic metamaterials (HMMs) with very flat isofrequency surfaces in wavevector space for tunneling of electromagnetic (EM) energy, which lead to collimation and subwavelength focusing at microwave frequencies. The HMM as a transmission device has been realized by employing two-dimensional metamaterial transmission lines. In HMM operates in canalization regime, the EM waves with different incident angles were refracted in a direction. The HMMs can couple evanescent waves with high wave vectors into propagating modes, and as a result, they provide subwavelength focusing. Focusing of with the narrowest full width half maximum (FWHMs) of about 1/32 of the wavelength at 0.95GHz is confirmed. The numerical simulation and the experimental measurement show good agreement.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"35 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121027525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Input coupling systems for terahertz gyro-TWAs 太赫兹陀螺twa的输入耦合系统
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015697
C. Donaldson, L. Zhang, J. Garner, W. He
{"title":"Input coupling systems for terahertz gyro-TWAs","authors":"C. Donaldson, L. Zhang, J. Garner, W. He","doi":"10.1109/UCMMT45316.2018.9015697","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015697","url":null,"abstract":"Input coupling systems for THz gyrotron traveling wave amplifiers (gyro-TWAs) are presented in this paper. These form one of the most critical parts of the gyro-TWA as it feeds the low power seed signal into the interaction circuit and incorrect design can lead to cessation of the amplification. The T-junction, multihole and multiarm coupler types were simulated in CST Microwave Studio and their optimized reflection and transmission characteristics, operating at a central frequency of 0.37 THz are presented. A scaled multiarm coupler, designed to then operate at 94 GHz, was manufactured and its microwave properties measured on a vector network analyser.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"2 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122587557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of a Sheet Beam Electron Optical System with a Field Emission Cathode 场发射阴极片束电子光学系统的合成
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015915
A. V. Danilushkin, A. Burtsev, I. Navrotsky, K. V. Shumikhin, N. Ryskin
{"title":"Synthesis of a Sheet Beam Electron Optical System with a Field Emission Cathode","authors":"A. V. Danilushkin, A. Burtsev, I. Navrotsky, K. V. Shumikhin, N. Ryskin","doi":"10.1109/UCMMT45316.2018.9015915","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015915","url":null,"abstract":"The results of design and simulation of an electron-optical system with compression sheet electron beam and field emission cathode are presented. The result of modeling the electron gun at linear compression ∼ 10, the beam of current 0.1A has the size of 0.125·0.7mm2 are performed. The electric field at the cathode is 0.4·105 V/cm at anode voltage 20000 V. The feasibility of obtaining a high density sheet beam focusing of electron gun consisting of field emission cathode is discussed.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125238032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
High-Isolation Multi-Function Duplexer Using Varactor Loaded SIR and Feed-Line 采用变容器加载SIR和馈线的高隔离多功能双工器
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015656
Changkun Liu, Xiaohui Liu, Zhixian Deng, Xun Luo
{"title":"High-Isolation Multi-Function Duplexer Using Varactor Loaded SIR and Feed-Line","authors":"Changkun Liu, Xiaohui Liu, Zhixian Deng, Xun Luo","doi":"10.1109/UCMMT45316.2018.9015656","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015656","url":null,"abstract":"In this paper, a multi-function duplexer using the varactor-loaded stepped-impedance resonators (SIRs) is proposed. Such duplexer utilizes two sets of SIRs to construct the two channels. Meanwhile, loaded-varactors are tapped at the SIRs for adjusting the frequency response. Besides, the varactor is embedded in each pair of SIRs for further enhancing the passband performance. Moreover, the T-junction is introduced to achieve higher output isolation. Thus, a multi-function duplexer is fabricated and measured. The measured tuning range of the dual channel is 2.7-3 GHz and 3.5-3.8 GHz, respectively, with an output isolation greater than 48 dB.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128421753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compact Balun Filter Using Coupled Resonators 使用耦合谐振器的紧凑型Balun滤波器
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015701
Su-Li Song, Jun Yang, Jin-Xu Xu
{"title":"Compact Balun Filter Using Coupled Resonators","authors":"Su-Li Song, Jun Yang, Jin-Xu Xu","doi":"10.1109/UCMMT45316.2018.9015701","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015701","url":null,"abstract":"In this paper, we present a compact balun with bandpass responses, which is designed based on a Marchand balun. One half-wavelength and two quarter-wavelength transmission lines in Marchand balun are utilized as resonators in this design. Three ports are coupled to the resonators. The lines are folded to miniaturize the circuit size. By controlling the coupling region, the phase difference of the two output ports is nearly 180°. For demonstration, a balun filter is designed, fabricated and measured. Good agreement between the simulated and measured results validate the proposed idea.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127520955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A W-band Antenna with Dual Circular Polarization for mmWave Wireless Communications 毫米波无线通信用双圆极化w波段天线
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015659
Chao Shu, Shaoqing Hu, Yuan Yao, Xiao-dong Chen
{"title":"A W-band Antenna with Dual Circular Polarization for mmWave Wireless Communications","authors":"Chao Shu, Shaoqing Hu, Yuan Yao, Xiao-dong Chen","doi":"10.1109/UCMMT45316.2018.9015659","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015659","url":null,"abstract":"This paper presents our study on a dual circular polarization feed horn for reflector antennas operating in W-Band. It mainly consists of a stepped septum polarizer, a circular horn and dual ports for LHCP and RHCP feeding respectively. Apart from the high gain that can be achieved when it is used together with parabolic reflector as a primary feed, it has the capability of transmitting and receiving two orthogonal circular polarized signal to achieve Polarization-Division Multiplexing (PDM) or a Full-Duplex in mmWave wireless communication systems. The simulation results show that the proposed feed horn can achieve 21% relative bandwidth from 85 GHz to 105 GHz with AR < 2 dB and reflection coefficient $mathrm{S}_{11} <-15$ and isolation > 15 dB for both LHCP and RHCP. Radiation pattern with good rotational symmetry over the whole working bandwidth is also obtained in order to achieve high aperture efficiency when the feed horn works with a parabolic reflector.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121594347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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