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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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Millimeter-Wave Broadband Power Divider Using Substrate Integrated Coaxial Line 基于基片集成同轴线的毫米波宽带功率分配器
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015671
Yuqi Zhang, Jiexi Yin, Haiming Wang
{"title":"Millimeter-Wave Broadband Power Divider Using Substrate Integrated Coaxial Line","authors":"Yuqi Zhang, Jiexi Yin, Haiming Wang","doi":"10.1109/UCMMT45316.2018.9015671","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015671","url":null,"abstract":"A millimeter-wave broadband power divider using substrate integrate coaxial line (SICL) structure is investigated, fabricated and measured. The performance of power dividers with different kinds of transmission lines is compared in this study. Simulation and measurement results show that the fabricated SICL power divider prototype achieves wider working bandwidth than the SIW power divider and lower insertion loss than microstrip power divider.","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":"131140142","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: 2
Design of W-band Fin-Line Bandpass Filter With Broadband And Low-Insertion Loss Performance 具有宽带低插入损耗性能的w波段鳍线带通滤波器设计
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015699
Daotong Li, Yaohui Zhang, Yaqing Yu, Mei Li, Haowei Wu, M. Tang
{"title":"Design of W-band Fin-Line Bandpass Filter With Broadband And Low-Insertion Loss Performance","authors":"Daotong Li, Yaohui Zhang, Yaqing Yu, Mei Li, Haowei Wu, M. Tang","doi":"10.1109/ucmmt45316.2018.9015699","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015699","url":null,"abstract":"In this paper, a broadband waveguide bandpass filter (BPF) is proposed using E-plane insert fin-line structure. The design principle is detailed. The characteristics of inductive coupling cell is investigated using the equivalent T-type network and $K$ inverter. Moreover, the relationship between the bandwidth and gap width b1 is numerically studied. It is clear that when the gap width is enhanced, both the bandwidth and the selectivity are improved. As demonstration, a wideband BPF with central frequency 94 GHz and bandwidth 11 GHz (FBW 11.7%) is designed, fabricated and measured. The measured results agree well with the simulated ones.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"12 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132724099","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
Efficient Calculation of Input Impedance of Dipole Antennas 偶极子天线输入阻抗的高效计算
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015796
Qian Zhang, Jingtian Li, Guoqing He, Z. Cao, Ziyao Lu, Can Wang, Zhiwei Luo
{"title":"Efficient Calculation of Input Impedance of Dipole Antennas","authors":"Qian Zhang, Jingtian Li, Guoqing He, Z. Cao, Ziyao Lu, Can Wang, Zhiwei Luo","doi":"10.1109/ucmmt45316.2018.9015796","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015796","url":null,"abstract":"An efficient method for the calculation of input impedance of dipole antennas is proposed. The equivalent magnetic current frill is used to model the coax aperture. The characteristics of the feed model by the equivalent magnetic current frill are researched and a simple method for calculation the near and far zone fields from an annular ring of circumferentially directed magnetic current which may be used to represent coaxial apertures is presented. Based on this, the EFIE for arbitrarily shaped thin wires(ATW) is adopted to model the variation of the current, and the moment of method is used to calculate the input impedance of dipole antennas with using triangle basis and testing functions. The numerical results are presented to validate the method.","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":"123474828","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
Printed Slot Antenna for Mobile Phone with Metal Frame 金属框架手机印刷槽天线
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015751
L. Shen, B. Yuan, G. Luo
{"title":"Printed Slot Antenna for Mobile Phone with Metal Frame","authors":"L. Shen, B. Yuan, G. Luo","doi":"10.1109/ucmmt45316.2018.9015751","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015751","url":null,"abstract":"A simple printed slot antenna for WWAN metal-rimmed mobile phone application is presented in the paper. The antenna is mainly composed of two slots, and fed with an L-shaped coupled feedline. By etching a slit on the metal frame, a good excitation of the monopole slot resonant mode can be achieved. Then combining with fundamental (half-wavelength) modes of two slot, the GSM850/900 (824∼960 MHz) and DCS/PCS/UMTS2100 (1710∼2170 MHz) operating bands can be covered. Detailed operating principle of the proposed antenna is discussed in the article.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"82 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":"122623679","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 Method of Inductor Selection for NLTLs Circuits Applied in High Repetition Pulse Generator 一种用于高重复脉冲发生器的NLTLs电路电感选择方法
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015785
Fenglian Xie, Chao Wang, Lijian Xia, B. Yuan, Junfa Mao
{"title":"A Method of Inductor Selection for NLTLs Circuits Applied in High Repetition Pulse Generator","authors":"Fenglian Xie, Chao Wang, Lijian Xia, B. Yuan, Junfa Mao","doi":"10.1109/UCMMT45316.2018.9015785","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015785","url":null,"abstract":"Non-linear transmission line (NLTLs) is a significant method in pulse compression, which is the key problem in high-voltage pulse generator with high-repeatable frequency. In this kind of circuit, capacitors are the non-linear components whose value would be changed as the voltage across the components goes high or low, we propose a selection method to determine the value of inductor in the circuit so that we can execute the experiment easier and more efficient.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"89 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":"124610413","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
220GHz GaAs Integrated Schottky Diode Mixer for Imaging System 用于成像系统的220GHz GaAs集成肖特基二极管混频器
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015750
Yilin Yang, Bo Zhang, D. Ji, Yong Fan
{"title":"220GHz GaAs Integrated Schottky Diode Mixer for Imaging System","authors":"Yilin Yang, Bo Zhang, D. Ji, Yong Fan","doi":"10.1109/UCMMT45316.2018.9015750","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015750","url":null,"abstract":"In this paper, a wide band 220GHz sub-harmonic mixer based on GaAs integrated Schottky diode is proposed for future imaging system. The influence brought by manual assembly of the flip chip diodes is analyzed. And the integrated diode technology is applied to improve the consistency between the performance of each mixer in the multichannel imaging front-end and the integral performance of the imaging system. Simulated results show that within the band from 185GHz to 255 GHz, the conversion loss of the mixer is less than 9dB, and the DSB noise temperature is less than 900K.","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":"121824042","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 Lightweight High Power Millimeter Wave Sources using Pseudospark Plasma Electron Beams 使用伪火花等离子体电子束的紧凑轻量级高功率毫米波源
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015661
A. Cross, H. Yin, W. He, L. Zhang, K. Ronald, A. Phelps, G. Shu, Y. Yin, J. Zhao
{"title":"Compact Lightweight High Power Millimeter Wave Sources using Pseudospark Plasma Electron Beams","authors":"A. Cross, H. Yin, W. He, L. Zhang, K. Ronald, A. Phelps, G. Shu, Y. Yin, J. Zhao","doi":"10.1109/UCMMT45316.2018.9015661","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015661","url":null,"abstract":"This article introduces the demonstration of several compact millimeter wave sources using both pencil and sheet-shaped pseudospark (PS)plasma electron beams. There are four devices that were successfully driven by PS plasma-sourced pencil beams, including a Ka-band Cherenkov maser, two backward oscillators (BWOs) in W-band and G-band, and an extended interaction oscillator (EIO) in W-band. There were also two devices successfully driven by PS plasma-sourced sheet electron beams, including two planar EIOs in W-band and G-band. These devices can generate tens up to kilowatts of output power, which are very attractive for many important applications. This article will especially present the recent advances in the generation of high quality PS plasma-sourced electron beams using a compact post-acceleration unit and the application of the beams in compact circular and planar EIO slow wave structures.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"12 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":"116021641","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
Super-radiant Smith-Purcell Radiation Excited by Multi-beam in Two-dimensional Periodic Columns 二维周期柱中多束激发的超辐射Smith-Purcell辐射
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015807
Pengfei Hu, Shenggang Liu, Min Hu, Zhenhua Wu, Zijie Xiong, Xiaoqiuyan Zhang, R. Zhong, Diwei Liu, S. Gong, T. Zhao
{"title":"Super-radiant Smith-Purcell Radiation Excited by Multi-beam in Two-dimensional Periodic Columns","authors":"Pengfei Hu, Shenggang Liu, Min Hu, Zhenhua Wu, Zijie Xiong, Xiaoqiuyan Zhang, R. Zhong, Diwei Liu, S. Gong, T. Zhao","doi":"10.1109/UCMMT45316.2018.9015807","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015807","url":null,"abstract":"This paper proposes a structure composed of two-dimensional periodic columns to reduce the start current density of multi-beam which excites Super-radiant Smith-Purcell radiation. The dispersion of periodic columns is deduced by means of resonance method to predict the frequency of surface wave. The electromagnetic wave at the frequency is excited by the inverse wave oscillation mechanism and super-radiation is emitted at the harmonic of the frequency. Super-radiant Smith-Purcell radiation is simulated by a 3D particle-in-cell (pic) simulation and the super-radiation in periodic columns gets lower start current density (7.5 A/cm2) and higher output power (440 mW) compared with the super-radiation in flat grating. Accordingly, this method is expected to greatly improve the performance of miniaturized and tunable terahertz radiation sources.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"3 7-8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120932476","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
High Efficiency Rectifier with Extended Operating Input Power Range 高效率整流器与扩展工作输入功率范围
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/ucmmt45316.2018.9015829
Shaofei Bo, Xiuyin Zhang, Yuyang Xiao
{"title":"High Efficiency Rectifier with Extended Operating Input Power Range","authors":"Shaofei Bo, Xiuyin Zhang, Yuyang Xiao","doi":"10.1109/ucmmt45316.2018.9015829","DOIUrl":"https://doi.org/10.1109/ucmmt45316.2018.9015829","url":null,"abstract":"A novel rectifier with wide input power range is proposed, which is designed by branch-line coupler. It contains three sub-rectifiers, two of them work at high power level as main branches and another one works at low power level as power recycling branch. The impendance of main branches will be mismatched when it works at low power and the power is reflected to power recycling branch. Consequence, in a wide power range, the rectifier will maintain high efficiency. Theoretical analysis and experiment are both carried out. The measured efficiency of a 2.45 GHz rectifier can over 500% from 8.5 to 32.5 dBm.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"14 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":"127878244","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 Micro-channel Cooling Structures For a Ku-band Sheet Beam Travelling Wave Tube ku波段板束行波管微通道冷却结构设计
2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) Pub Date : 2018-09-01 DOI: 10.1109/UCMMT45316.2018.9015653
G. Liu, J. X. Wang, G. Shu, Y. Luo
{"title":"Design of Micro-channel Cooling Structures For a Ku-band Sheet Beam Travelling Wave Tube","authors":"G. Liu, J. X. Wang, G. Shu, Y. Luo","doi":"10.1109/UCMMT45316.2018.9015653","DOIUrl":"https://doi.org/10.1109/UCMMT45316.2018.9015653","url":null,"abstract":"Micro-channel heat transfer has a superior power capacity and heat dissipation handling ability compared with the traditional cooling topology due to its advantages of compact dimensions and effective heating transferring ability. This leads to many potential applications for the high power millimeter wave and THz vacuum electron devices with high power density loss and limited size. In this paper, thermal analysis of a optimized high efficient cooling structure considering the dielectric attenuated losses and electrons interception were studied for a Ku-band continous wave sheet beam travelling wave tube. Results shows the RF circuit with micro-channel structure can operate with maximum ~1kW dielectric loss power and maximum 7% electrons interception.","PeriodicalId":326539,"journal":{"name":"2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"53 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":"128769193","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
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