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2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)最新文献

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A Wideband Circularly Polarized Antenna With Stepped-Shaped Patch 带阶梯形贴片的宽带圆极化天线
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199692
Yanfang Wang, F. Zhu, S. Gao
{"title":"A Wideband Circularly Polarized Antenna With Stepped-Shaped Patch","authors":"Yanfang Wang, F. Zhu, S. Gao","doi":"10.1109/IMWS-AMP49156.2020.9199692","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199692","url":null,"abstract":"A wideband right-handed circularly polarized antenna fed by a tapered balun has been proposed. The antenna consists of a pair of rotationally symmetrical Z-shaped patches, a vertical tapered balun and a ground plane. The components of the Z-shaped patches include the stepped patches for generating circularly polarized waves, the rectangular patches and the trapezoidal patches which are connected to the ends of the balun. The obtained results can confirm that the proposed antenna has achieved a wide impedance bandwidth of 89% (1.33-3.5 GHz) and the 3-dB axial ratio bandwidth of 63% (1.56-3.0 GHz) with stable radiation patterns and a consistent gain across the operating frequency band with the minimum value above 5.0 dBi.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121736727","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
Numerical demonstrations of thermally tunable metamaterials based on liquid metals 基于液态金属的热可调超材料的数值演示
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199676
Liang Ma, Dexu Chen, Jian Li, Na Li, Yongjun Huang, G. Wen
{"title":"Numerical demonstrations of thermally tunable metamaterials based on liquid metals","authors":"Liang Ma, Dexu Chen, Jian Li, Na Li, Yongjun Huang, G. Wen","doi":"10.1109/IMWS-AMP49156.2020.9199676","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199676","url":null,"abstract":"In this paper, a tunable metamaterial is proposed based on the thermal-sensitivity Hg liquid metals. The Hg packaged in the glass tube by 3-D printing technique is designed to form the basic unit of the tunable metamaterial. The electric length of the metamaterial unit will be altered with the changes of the surrounding temperature, and as a result the resonance response and negative refractive index of the metamaterial will be changed accordingly. Theoretical analysis on the thermally tunable Hg-metamaterial will be presented. The numerical demonstrations of the Hg-metamaterial unit will be performed to validate the proposed design. Finally, a performance enhanced design is proposed to achieve higher temperature sensing precision.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130817058","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
Interleaved-Slotted Annular Leaky-Wave Antenna with Conical Beam 锥形波束交错开槽环形漏波天线
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199721
Haijiao Yang, Yuchen Ma, Junhong Wang
{"title":"Interleaved-Slotted Annular Leaky-Wave Antenna with Conical Beam","authors":"Haijiao Yang, Yuchen Ma, Junhong Wang","doi":"10.1109/IMWS-AMP49156.2020.9199721","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199721","url":null,"abstract":"A leaky-wave antenna (LWA) with interleaved arc-slots etched on Substrate Integrated Waveguide (SIW) for conical beam radiation is proposed. The antenna works at 5.8 GHz, and can realize conical beam with a maximum angle of θ = 27° in the elevation plane. The antenna is with low-profile (h = 0.0387 λ0), and the average gain along beam contour is 5 dBi.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131063986","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
Multilayer terahertz modulator based on VO2 基于VO2的多层太赫兹调制器
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199694
Xiaoqing Guo, Xuan Cong, Xiaolin Hao, Yaxin Zhang
{"title":"Multilayer terahertz modulator based on VO2","authors":"Xiaoqing Guo, Xuan Cong, Xiaolin Hao, Yaxin Zhang","doi":"10.1109/IMWS-AMP49156.2020.9199694","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199694","url":null,"abstract":"In this paper, we propose a multi-layer composite structure utilizing metamaterial combined with vanadium dioxide (VO2). Through the excitation of applied voltage, the VO2 located at the gap of the I-shaped structure has the phenomenon of abrupt transition from semiconductor property to metal property, resulting in a change in the resonance state of the first layer structure. When the terahertz wave passes through a two-layer metal structure which have different resonance frequencies, the modulation bandwidth can be expanded. This multi-layer modulator is capable of effective broadband amplitude modulation in 0.168-0.223 THz and 0.348-0.379 THz, which has many potential applications in terahertz wireless communication systems and high-speed imaging systems.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127463142","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
Dual-polarized Low-Profile Broadband Microstrip Antenna 双极化低轮廓宽带微带天线
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199744
Shuangshuang Wang, Wenxing An, Liuyan Hong, Yu Luo, Kaixue Ma
{"title":"Dual-polarized Low-Profile Broadband Microstrip Antenna","authors":"Shuangshuang Wang, Wenxing An, Liuyan Hong, Yu Luo, Kaixue Ma","doi":"10.1109/IMWS-AMP49156.2020.9199744","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199744","url":null,"abstract":"A dual-polarized microstrip antenna based on a periodic structure is proposed with a dual aperture coupling excitation. A novel feeding mechanism is proposed for the dual-polarization design with a high port isolation. Simulation results show that it has a relative bandwidth of 50% with the |S11| less than -10 dB and the simulation result of port isolation is higher than 38 dB over the passband. Boresight radiation performance has been obtained with a maximum gain of 10 dBi, and the overall height is only 0.047 λ0, λ0 is wavelength for 4 GHz.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114399185","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: 3
Extracting Complex PCB Substrate Permittivity from a Transmission Line using the Finite Difference Integral Method from 10 GHz - 100 GHz 利用有限差分积分法从传输线提取10 GHz - 100 GHz范围内的复杂PCB衬底介电常数
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199738
Felix Sepaintner, Andreas Scharl, Franz Röhrl, W. Bogner, S. Zorn
{"title":"Extracting Complex PCB Substrate Permittivity from a Transmission Line using the Finite Difference Integral Method from 10 GHz - 100 GHz","authors":"Felix Sepaintner, Andreas Scharl, Franz Röhrl, W. Bogner, S. Zorn","doi":"10.1109/IMWS-AMP49156.2020.9199738","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199738","url":null,"abstract":"This paper presents a new numerical method to deduce the complex permittivity ${underlinevarepsilon}_{r}$ of PCB (printed circuit board) substrates. First, the attenuation and phase of an on board transmission line are measured with a vector network analyzer (VNA). The transmission line is then simulated with the finite difference integral method (FDI) with the substrate substituted by air. The measured and simulated phases are used, to calculate the effective permittivity and the real part of the complex permittivity ${varepsilon}_{r}^{prime}$. With known ${varepsilon}_{r}^{prime}$, the electromagnetic field distribution can be calculated, which is necessary to deduce the imaginary part of the permittivity. The shown algorithms can be used for frequencies up to 100 GHz and without any iterative processes.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114572907","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
An Effective Method of Collided Signals Separation for Satellite-based Automatic Identification System 星载自动识别系统中碰撞信号分离的有效方法
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199722
Dan Zhao, Min Huang, Peng Li, Luan Wang, Renhong Xie, Yibin Rui
{"title":"An Effective Method of Collided Signals Separation for Satellite-based Automatic Identification System","authors":"Dan Zhao, Min Huang, Peng Li, Luan Wang, Renhong Xie, Yibin Rui","doi":"10.1109/IMWS-AMP49156.2020.9199722","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199722","url":null,"abstract":"In this paper, an effective method which is developed specially for separating the collided wireless RF signals of satellite-based Automatic Identification System (AIS) is presented. The proposed approach adopts an optimization algorithm, which improves the artificial bee colony (ABC) algorithm by combining the advantages of limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS). The separation mathematical model of the collided signals is addressed and the steps of algorithm are given. Simulation results show that the proposed method yields superior performance in terms of convergence speed and solution accuracy.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116979229","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
Wideband and Multi-band Circular Polarization Conversion Metasurfaces 宽带和多波段圆偏振转换超表面
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199656
H. B. Wang, Y. J. Cheng
{"title":"Wideband and Multi-band Circular Polarization Conversion Metasurfaces","authors":"H. B. Wang, Y. J. Cheng","doi":"10.1109/IMWS-AMP49156.2020.9199656","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199656","url":null,"abstract":"Circular polarization conversion metasurfaces (CPCMs) can convert an incident linearly-polarized (LP) wave into an transmitted circularly-polarized (CP) wave, which are widely used in CP antenna designs. Compared to the conversional CP antennas, the CPCMs combined with LP antennas are easily achieved, without complicated feeding structures. The existing CPCMs have narrow bandwidths or low incident angle stability. In this presentation, a wideband and wide-angle CPCM based on a single-layer dielectric substrate will be proposed, whose bandwidth can cover the operation band of the K-/Ka-band satellite communications. After that, a dual-band CPCM with the element consisted of connected Jerusalem crosses and “I”-type dipoles will be introduced, which shows wide axial ratio bandwidth in the K and Ka bands. Furthermore, the dual-band element can be improved by placing orthogonal polarization structures on different layers, making the small element size and the low cross-polarization level respectively. The modified dual-band element-based CPCM has the wide operation band and the high incident angle stability.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123928654","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 Transparent Broadband Absorbing Metamaterial Based on ITO Structure 一种基于ITO结构的透明宽带吸收材料
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199766
Jingxian Yang, Long Xiao, Junfeng Chen
{"title":"A Transparent Broadband Absorbing Metamaterial Based on ITO Structure","authors":"Jingxian Yang, Long Xiao, Junfeng Chen","doi":"10.1109/IMWS-AMP49156.2020.9199766","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199766","url":null,"abstract":"Aiming at some specific application scenarios, this paper proposes a broadband transparent absorbing metamaterial using transparent quartz glass and indium tin oxide (ITO) material. The transparent absorbing metamaterial is composed of a three-layer structure with the thickness of 4.2mm overall. The absorption of the transparent metamaterial reaches 90% in the frequency range from 6.2GHz to 19.3GHz, and it has good polarization insensitivity and wide-incident-angle stability. This structure can be used in electromagnetic shielding scenes for the purpose of light transmission.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132518463","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 Design of Leaky-Wave System for the High-Speed Rail in the Vacuum Tube 真空管内高速铁路漏波系统的设计
2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) Pub Date : 2020-07-01 DOI: 10.1109/IMWS-AMP49156.2020.9199670
Liying Zou, Zheng Li, Liu Liu, Junhong Wang
{"title":"A Design of Leaky-Wave System for the High-Speed Rail in the Vacuum Tube","authors":"Liying Zou, Zheng Li, Liu Liu, Junhong Wang","doi":"10.1109/IMWS-AMP49156.2020.9199670","DOIUrl":"https://doi.org/10.1109/IMWS-AMP49156.2020.9199670","url":null,"abstract":"High-speed rail in vacuum tube is a new type of rail transportation technology, which has super high speed and requires low-latency and high-stability requirements for vehicle-ground wireless communication systems. Therefore, the wireless free wave method in the communication system of the traditional rail is not suitable in the scene of high-speed rail in vacuum tube, which will cause serious Doppler effect. In this paper, a leaky wave system is adopted to suppress the Doppler effect and achieve the uniform near-field distribution in the vacuum tube. The simulated results show that the leaky waveguide can radiate electromagnetic waves perpendicular to the running direction of the train, and its electric field strength and phase are uniformly distributed.","PeriodicalId":163276,"journal":{"name":"2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125363544","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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