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2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)最新文献

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Recent advances in space mapping technique modeling GaN HEMT GaN HEMT空间映射技术建模研究进展
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569884
Jinyuan Cui, F. Feng, Zhihao Zhao, Wenyuan Liu, W. Na, Qi-jun Zhang
{"title":"Recent advances in space mapping technique modeling GaN HEMT","authors":"Jinyuan Cui, F. Feng, Zhihao Zhao, Wenyuan Liu, W. Na, Qi-jun Zhang","doi":"10.1109/ucmmt53364.2021.9569884","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569884","url":null,"abstract":"Gallium nitride (GaN) HEMT has board application prospect for 5G wireless communication systems. This paper reviews the recent advance in space mapping technique for GaN HEMT modeling technique. A novel decomposed-based space mapping technique is discussed. This method is a systematic modeling approach with fast developing speed. A 2×350 µm GaN HEMT device are used as an example.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133258660","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
Concealed Object Detection For Active Millimeter Wave Imaging Based CGAN Data Augmentation 基于CGAN数据增强的有源毫米波成像隐藏目标检测
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569893
L. Fan, Qi Yang, B. Deng, Yang Zeng, Hongqiang Wang
{"title":"Concealed Object Detection For Active Millimeter Wave Imaging Based CGAN Data Augmentation","authors":"L. Fan, Qi Yang, B. Deng, Yang Zeng, Hongqiang Wang","doi":"10.1109/ucmmt53364.2021.9569893","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569893","url":null,"abstract":"Considering under-controlled privacy issues and no health hazards, the active millimeter wave (AMMW) imaging technique has been widely applied in security industries. The ultimate goal is to recognize and detect the concealed object accurately and fleetly, which requires complete and representative datasets. In this paper, concealed object detection for AMMW is proposed. The conditional generative adversarial network (CGAN) is utilized for data augmentation, which enhances the image feature. Data feasibility for detection is validated by the object detection network. Experimental results demonstrate that the proposed method can improve the recognition accuracy effectively and provide a solution for training with small sample datasets.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130674861","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
Synthesis Technology of Shaped Reflector 异形反射器合成技术
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569901
Shang-Tsung Yang, Tianyang Chen, Junsheng Yu, Yuan Yao, Xiao-dong Chen
{"title":"Synthesis Technology of Shaped Reflector","authors":"Shang-Tsung Yang, Tianyang Chen, Junsheng Yu, Yuan Yao, Xiao-dong Chen","doi":"10.1109/ucmmt53364.2021.9569901","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569901","url":null,"abstract":"In this paper, the author introduces a physical method of shaped reflector synthesis technology based on NURBS. By comparing with different shaped reflector technologies, the author tries to convince us the usability and superiority of NURBS. At last, the author shows the application of this method in CATR system.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132979757","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 Wideband Dual-Polarized Filtering Antenna for Base Station Applications 一种用于基站的宽带双极化滤波天线
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569929
Lehu Wen, S. Gao, Xue-xia Yang, Wei Hu
{"title":"A Wideband Dual-Polarized Filtering Antenna for Base Station Applications","authors":"Lehu Wen, S. Gao, Xue-xia Yang, Wei Hu","doi":"10.1109/ucmmt53364.2021.9569929","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569929","url":null,"abstract":"A wideband dual-polarized filtering antenna is presented in this paper for base station applications. This antenna is composed of the center driven crossed-dipoles and four parasitic stepped split-loop. It is investigated that the center dipole arm can introduce the first radiation null at the lower band-edge, and the width of the stepped split-loop can affect the second radiation null at the upper band-edge. Therefore, by controlling these two parameters, a wideband dual-polarized antenna with quasi-elliptic filtering response can be realized. Finally, this antenna was designed, fabricated, and measured for performance verification. The measured results prove that the presented antenna can have a wide impedance bandwidth covering 1.7-2.9 GHz, and high suppressions of 33.8 db and 20.6 db over 0.6-1 GHz and 3.3-5 GHz.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134367332","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
Lunar surface radiation brightness temperature simulation for FY-4 lunar calibration 月球表面辐射亮度温度模拟用于FY-4月球定标
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569894
Siyuan Zhou, Hongyu Xu, Xianchen Zhang, Weidong Hu
{"title":"Lunar surface radiation brightness temperature simulation for FY-4 lunar calibration","authors":"Siyuan Zhou, Hongyu Xu, Xianchen Zhang, Weidong Hu","doi":"10.1109/ucmmt53364.2021.9569894","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569894","url":null,"abstract":"The Feng Yun-4 satellite (FY-4) is a new generation of meteorological satellite developed independently by China, which will greatly improve the capability of meteorological monitoring and forecasting. Millimeter and Submillimeter Sounding/Imager (MMSI) is an important payload it carries. To carry out the lunar calibration of FY-4, the inversion of the main metallic substance content of the lunar surface based on the data from the U.S. Clementine satellite is used to obtain the dielectric constant distribution. Then the lunar surface brightness temperature (TB) radiation model is established by combining the basic lunar regolith parameters. The accuracy and reliability of the method are verified using Chang'e-2(CE-2) MRM data. Finally, the radiation TB distribution of FY-4 MMSI terahertz band in the lunar equatorial region is simulated, which can provide experience for future geostationary satellite satellite-based sounder lunar calibration work.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"9 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134259655","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
Investigation of gap waveguide-based slow wave structure for millimeter wave travelling wave tubes 基于间隙波导的毫米波行波管慢波结构研究
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569878
Amira Zied Abozied, R. Letizia
{"title":"Investigation of gap waveguide-based slow wave structure for millimeter wave travelling wave tubes","authors":"Amira Zied Abozied, R. Letizia","doi":"10.1109/ucmmt53364.2021.9569878","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569878","url":null,"abstract":"The design of wideband slow wave structures (SWS) for millimeter wave travelling wave tubes can be aided by the implementation of gap waveguide technology. Contactless metal walls can alleviate assembly challenges at frequencies above 70 GHz and potentially reduce ohmic losses. The increased design flexibility typical of this technology can lead to the integration of different functionalities into a monolithic design at the power coupling section. A W-band gap waveguide-based SWS is proposed for wideband travelling wave tube operation at the frequency range 88–100 GHz. Preliminary results of the complete SWS are presented.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130915572","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
Mode Competition and Radial Spread Analysis for Novel Double Beam Universal Electron Gun in 1.2 Terahertz Gyrotron 1.2太赫兹回旋管新型双束通用电子枪模式竞争与径向扩散分析
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569917
A. Singh
{"title":"Mode Competition and Radial Spread Analysis for Novel Double Beam Universal Electron Gun in 1.2 Terahertz Gyrotron","authors":"A. Singh","doi":"10.1109/ucmmt53364.2021.9569917","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569917","url":null,"abstract":"The generation of an electron beam and its interaction with RF wave is a decisive factor for gyrotron operation in the desired mode. Excitation of the desired mode primarily depends upon beam radius in addition to beam current. Therefore, a design investigation of the double beam electron optics system (DB-EOS) for 1.2 THz gyrotron is presented here, along with the mode competition study. The radial spread of the dual-beam magnetron injected gun is calculated to avoid the parasitic mode excitation and ensure the isolation between the inner and outer beams. Furthermore, this study is extended to investigate the velocity spread variation over emitter roughness and cathode temperature. This study finds that radial spread should be below 0.04 mm for the internal beam to avoid competition and TE-85 mode is severely competing with operating TE21,4 and TE-15,6 mode for external beam.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125175123","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 Dual-frequency Dual-beam Antenna Based on Metasurface 一种基于超表面的双频双波束天线
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569937
Jie Luo, L. Han, Zhen Zhao, Wenmei Zhang
{"title":"A Dual-frequency Dual-beam Antenna Based on Metasurface","authors":"Jie Luo, L. Han, Zhen Zhao, Wenmei Zhang","doi":"10.1109/ucmmt53364.2021.9569937","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569937","url":null,"abstract":"In this paper, a dual-frequency dual-beam antenna loaded with metasurface is proposed. Firstly, the feeding unit composed of two printed dipole antenna is used to provide excitation. And then, by loading the metasurface with periodically arranged square rings, two beams steered to different directions are realized and two wider working frequency bands are obtained. At the same time, the beam gains are improved. The results show that the resonant frequencies of the antenna are at 57 GHz and 66 GHz, and the corresponding maximum radiation beam pointing at (φ,θ) = (164°, 90°), (196°, 90°) and (φ, θ= (158°, 90°), (202°, 90°), respectively. Also the gain can reach to 8.2 dBi.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123109136","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
A Ka-band 2-Stage Transformer-Coupled Power Amplifier in 0.13-µm SiGe BiCMOS Technology 一种0.13µm SiGe BiCMOS技术的ka波段2级变压器耦合功率放大器
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569869
Ling Li, Kenan Xie, Tongxuan Zhou, Haitang Dong, Hao Zhang, Keping Wang
{"title":"A Ka-band 2-Stage Transformer-Coupled Power Amplifier in 0.13-µm SiGe BiCMOS Technology","authors":"Ling Li, Kenan Xie, Tongxuan Zhou, Haitang Dong, Hao Zhang, Keping Wang","doi":"10.1109/ucmmt53364.2021.9569869","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569869","url":null,"abstract":"This paper presents a 30-to-40 GHz 2-stage power amplifier (PA) for 5G applications. Transformers are used to achieve a broad input, output and interstage matching while occupying a compact size. The neutralization technique is used to boost the power gain and improve stability of PA. According to the simulation results, the power amplifier achieves an output 1dB compression point (OP1dB) of 14.9 dBm and a saturated output power of 17.4 dBm with a peak power added efficiency (PAE) of 39% at 35 GHz. The gain is larger than 30 dB from 30–40 GHz. Implemented in a 0.13-µm SiGe BiCMOS process, the overall chip size is 0.46 mm2 including all RF and DC pads.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133663603","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 32-GHz Broadband mm-wave Power Amplifier in 45-nm SOI Technology 基于45nm SOI技术的32ghz宽带毫米波功率放大器
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569923
Cheng Zhang, Guanqin Guo, Wenlong He, Xi Zhu
{"title":"A 32-GHz Broadband mm-wave Power Amplifier in 45-nm SOI Technology","authors":"Cheng Zhang, Guanqin Guo, Wenlong He, Xi Zhu","doi":"10.1109/ucmmt53364.2021.9569923","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569923","url":null,"abstract":"This paper presents a broadband millimeterwave (mm-wave) power amplifier (PA) in 45-nm SOI Technology. Based on the principle of magnetically-coupled resonance (MCR), an asymmetric magnetically-coupled resonator is implemented using a transformer-based structure, which effectively compensates the high-frequency gain of PA, and improves the gain flatness and bandwidth of PA. According to the simulation results, the 3-dB bandwidth of the PA is 11 GHz from 26 to 37 GHz. Besides, the PA achieves gain of 22.7 dB, PSAT of 20.8 dBm, and peak PAE of 34.3% at 32 GHz.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128095008","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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