发布求助
文献互助 智能选刊 最新文献

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

筛选
英文 中文
Computational study of an overmoded, with diameter to wavelength ratio ≈ 8, slow-wave structure (SWS) of a relativistic backward-wave oscillator (BWO) operating in the E-band frequency range 在e波段工作的相对论性后波振荡器(BWO)的直径与波长比≈8的超模慢波结构(SWS)的计算研究
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569896
A. Andreev, Liangjie Bi, A. Elfrgani, E. Schamiloglu
{"title":"Computational study of an overmoded, with diameter to wavelength ratio ≈ 8, slow-wave structure (SWS) of a relativistic backward-wave oscillator (BWO) operating in the E-band frequency range","authors":"A. Andreev, Liangjie Bi, A. Elfrgani, E. Schamiloglu","doi":"10.1109/ucmmt53364.2021.9569896","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569896","url":null,"abstract":"The dispersion diagram of a uniform 20-period highly overmoded, with average diameter to 75 GHz operating wavelength ratio ≈ 8, slow-wave structure (SWS) designed to operate in E-band frequency range is numerically calculated using the SuperFish code. It is shown as a result of calculations that, while the lower-order TM01 mode of the SWS is slowed down by the corrugated structure of the E-band SWS, the higher-order TM0n modes are not slowed down.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"57 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":"133384238","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 Lightweight Circularly-Polarized Waveguide Slot Antenna for K Band Satellite Communications 一种用于K波段卫星通信的轻型圆极化波导缝隙天线
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569945
Yanbin Luo, Wei Wang, Ming Chen, Z. Zheng, Yuyang Zheng, Zhijian Yang
{"title":"A Lightweight Circularly-Polarized Waveguide Slot Antenna for K Band Satellite Communications","authors":"Yanbin Luo, Wei Wang, Ming Chen, Z. Zheng, Yuyang Zheng, Zhijian Yang","doi":"10.1109/ucmmt53364.2021.9569945","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569945","url":null,"abstract":"In this paper, a lightweight circularly-polarized waveguide slot antenna array with high efficiency and low axial ratio is demonstrated. The proposed antenna contains a rectangular feeding waveguide, which connects to a radiation cavity through coupling slots. Owing to the unique feed structure, an equal amplitude but opposite phase excitation is generated between adjacent coupling slots, making the metal walls in the rectangular radiation cavity unnecessary. Moreover, a metasurface-based polarization convert chamber is loaded onto the radiation cavity, resulting in an excellent circularly-polarized radiation. The proposed antenna works in K band (center frequency is 21 GHz) with the impedance bandwidth as well as the axial ratio bandwidth is 5.2% and 7.1%, respectively. In addition, the design of the proposed antenna has a remarkable effect on reducing the weight, showing a great potential for satellite communications.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"135 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":"124212576","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 Millimeter-Wave Circularly Polarized Antenna for 5G Applications 5G应用的毫米波圆极化天线
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569899
Xue Ren, Qingyi Guo, S. Liao, Wenlong He, Q. Xue, H. Wong
{"title":"A Millimeter-Wave Circularly Polarized Antenna for 5G Applications","authors":"Xue Ren, Qingyi Guo, S. Liao, Wenlong He, Q. Xue, H. Wong","doi":"10.1109/ucmmt53364.2021.9569899","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569899","url":null,"abstract":"This paper presents a circularly polarized millimeter-wave antenna for 5G applications based on magnetic dipole radiation. The radiation part is mounted on the ground directly, which is based on the magnetic dipole structure. This arrangement contributes to the robustness of the antenna. Surrounding cavity is utilized to improve the radiation performance. Sequentially fed scheme is applied to generate circularly polarized waves. The simulation results show that the designed antenna works well from 26 to 30 GHz. The radiation patters show low cross-polarization of below −45 dB in boresight with the peak gain of about 8 dBic. The axial-ratio is better than 3.15 dB within the beamwidth of 120°. Besides, good consistence of the radiation patterns on orthogonal planes is also observed.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"31 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":"121313798","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
Recent Advance in Adjoint EM Sensitivity Analysis for Fast Frequency Sweep 快速扫频伴随电磁灵敏度分析研究进展
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569873
Wei Liu, F. Feng, Jianan Zhang, Qi-jun Zhang
{"title":"Recent Advance in Adjoint EM Sensitivity Analysis for Fast Frequency Sweep","authors":"Wei Liu, F. Feng, Jianan Zhang, Qi-jun Zhang","doi":"10.1109/ucmmt53364.2021.9569873","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569873","url":null,"abstract":"This paper reviews the recent advance in adjoint electromagnetic (EM) sensitivity analysis for fast frequency sweep. The existing adjoint EM sensitivity analysis methods have to solve large systems of EM equations repetitively for the entire frequency band. We propose a new adjoint EM sensitivity analysis algorithm for the fast frequency sweep using the matrix Padé via Lanczos (MPVL) technique based on the finite-element method (FEM) to addresses this situation. A large EM matrix is only solved at a single frequency to predict the sensitivity information for all frequencies. The adjoint EM sensitivity analysis using the MPVL technique can obtain the same accuracy as the existing techniques while taking less time.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"174 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":"116640562","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
Updates on the Development of MW-level Ka-band Gyroklystron 毫米级ka波段回旋速调管的研究进展
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569900
Liang Zhang, Li Wang, L. Nix, Wenlong He, A. Cross
{"title":"Updates on the Development of MW-level Ka-band Gyroklystron","authors":"Liang Zhang, Li Wang, L. Nix, Wenlong He, A. Cross","doi":"10.1109/ucmmt53364.2021.9569900","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569900","url":null,"abstract":"In this paper, a gyroklystorn operating at 36 GHz was designed to drive a harmonic linearizer for the CompactLight Xray Free electron laser. Linear theory, non-linear theory and Particle-In-Cell simulations were used to design a three cavity 36 GHz gyro-klystron of gain 39 dB that is capable of producing 3.2 MW of power corresponding to an efficiency of 43% at a pulse repetition frequency of 1 kHz. Analysis of the phase stability of the amplifier found that 0.34° phase stability can be achieved for a variation in modulator voltage of 0.01%. When driven by a K100 (150kV, 50A) Scandinova modulator, the 36GHz gyro-klystron was a viable power source for a 6th harmonic linearizer.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"33 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":"116664700","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
D-Band Antenna-Filter Integration Using Metal 3D Printing 利用金属3D打印技术集成d波段天线滤波器
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569862
Chao Gu, Fei Cheng, S. Gao
{"title":"D-Band Antenna-Filter Integration Using Metal 3D Printing","authors":"Chao Gu, Fei Cheng, S. Gao","doi":"10.1109/ucmmt53364.2021.9569862","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569862","url":null,"abstract":"Low-cost fabrication of D band components is still challenging because of the small feature size of the design parameters. This paper introduces current 3D printing technologies that can be used to produce metallic waveguide-based components. In particular, metal binder jetting (MBJ) is a support-free printing technique suitable for printing complex structures. This paper aims to discuss D band antenna-filter integration by applying the MBJ process. The manufacturing strategy is applied to the design and optimization of an asymmetric iris filter which is later integrated with a resonant cavity antenna. The simulation results show that the proposed antenna-filter module has a three-order filtering performance with a maximum gain of 16.5 dBi.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"97 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":"116157557","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 108GHZ terahertz Modulator Based on an L-shaped metal strip 基于l形金属条的108GHZ太赫兹调制器
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569906
Dianyuan Ping, S. Gong, Yaxin Zhang, S. Liang
{"title":"A 108GHZ terahertz Modulator Based on an L-shaped metal strip","authors":"Dianyuan Ping, S. Gong, Yaxin Zhang, S. Liang","doi":"10.1109/ucmmt53364.2021.9569906","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569906","url":null,"abstract":"In this paper, a direct terahertz modulator based on oscillation mode transformation by a Schottky diode embedded in a L-shaped structure is presented. Depending on the on-off statues of the embedded dipole, the oscillation frequency is shifted, corresponding to the on-off modulation of the terahertz waves. The test results show a rather low insertion loss as 1.4 dB, the isolation reaches up to 12 dB in the frequency range from 105 to 115 GHZ.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"102 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":"121587217","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 Broadband Low-Noise Amplifier in 45-nm SOI Technology 基于45nm SOI技术的宽带低噪声放大器设计
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569903
Guanqin Guo, Cheng Zhang, Wenlong He, Xi Zhu
{"title":"Design of Broadband Low-Noise Amplifier in 45-nm SOI Technology","authors":"Guanqin Guo, Cheng Zhang, Wenlong He, Xi Zhu","doi":"10.1109/ucmmt53364.2021.9569903","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569903","url":null,"abstract":"This paper presents a 28–38 GHz wideband low-noise amplifier (LNA) with minimum noise figure of 2.8 dB. The amplifier consists of a two-stage cascade design. By using a transformer circuit as its matching network, the LNA achieved a wideband performance. The LNA was designed in 45 nm CMOS SOI technology, achieving a maximum voltage gain of 20 dB and a maximum power gain of 23 dB with a 3dB bandwidth of 28–38 GHz, and a noise figure less than 3.8 dB in the band. At a supply voltage of 1.5V, the DC power consumption was only 20 mW.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"53 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":"121633211","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
Design Study of a Sub-THz Traveling Wave Tube With a Converging Sheet Electron Beam 带会聚电子束的亚太赫兹行波管设计研究
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569867
A. Ploskikh, V. Titov, N. Ryskin
{"title":"Design Study of a Sub-THz Traveling Wave Tube With a Converging Sheet Electron Beam","authors":"A. Ploskikh, V. Titov, N. Ryskin","doi":"10.1109/ucmmt53364.2021.9569867","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569867","url":null,"abstract":"The results of simulation study aimed at development of a sub-THz traveling-wave tube (TWT) with a converged sheet electron beam are presented. The dual grating staggered slow-wave structure with a 100-um-height beam tunnel is designed and its cold electromagnetic parameters are calculated. The results of 3D PIC-simulation of the gain and output power in small-signal and large-signal operating regimes are presented. We compare the characteristics of the TWT driven with the converging sheet beam produced by an electron gun with shielded cathode and with a rectilinear beam produced by a gun immersed in the uniform magnetic field.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":"115 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":"132458098","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
Mutual Coupling on Axial Ratio of Circularly Polarized Antenna With Broadband Feed Network 宽带馈电网络圆极化天线轴比的相互耦合
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI: 10.1109/ucmmt53364.2021.9569886
Bo Liu, Simin Song, Xiaoming Chen
{"title":"Mutual Coupling on Axial Ratio of Circularly Polarized Antenna With Broadband Feed Network","authors":"Bo Liu, Simin Song, Xiaoming Chen","doi":"10.1109/ucmmt53364.2021.9569886","DOIUrl":"https://doi.org/10.1109/ucmmt53364.2021.9569886","url":null,"abstract":"This paper presents a broadband feed network for dual-fed circularly polarized antenna. The feed network is composed of broadband 90° phase shifter and a Wilkson power splitter. The impedance bandwidth (VSWR≤ 2) is from 2.5 to 4.5 GHz (about 57%), with the 3 dB axial ratio bandwidth from 2.9 to 4.1 GHz, and the maximum gain are 7.0 dB at the center frequency. The simulated results in the 1×2 array shows that the mutual coupling deteriorates the axial ratio from 1.03 dB to 4.37 dB.","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":"130678615","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信