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2020 International Symposium on Antennas and Propagation (ISAP)最新文献

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An Improved Method in Graph Coloring Algorithm for Interference Coordination in Cluster-wise Ultra-dense RAN 一种改进的图着色算法在聚类超密集RAN中的干涉协调
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391334
Chang Ge, Sijie Xia, Qiang Chen, F. Adachi
{"title":"An Improved Method in Graph Coloring Algorithm for Interference Coordination in Cluster-wise Ultra-dense RAN","authors":"Chang Ge, Sijie Xia, Qiang Chen, F. Adachi","doi":"10.23919/ISAP47053.2021.9391334","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391334","url":null,"abstract":"In our previous study, we proposed a Restricted Color Number (RCN) algorithm based on graph coloring for interference coordination in cluster-wise distributed MU-MIMO in ultra-dense RAN. In this algorithm, we applied Delaunay Triangulation to help decide the interference relationship, which is different from the common-used threshold setting method. In this paper, we will discuss about the advantages of the Delaunay Triangulation method over the threshold method in graph coloring algorithm for interference coordination.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128576169","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
Novel Broadband Corrugated Lens Antenna 新型宽带波纹透镜天线
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391169
Taiki Sato, K. Sekiya, A. Kuramoto
{"title":"Novel Broadband Corrugated Lens Antenna","authors":"Taiki Sato, K. Sekiya, A. Kuramoto","doi":"10.23919/ISAP47053.2021.9391169","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391169","url":null,"abstract":"Recently the wireless surveillance system has been regarded highly. In order to realize the sensitive wireless surveillance system, its antenna has to perform the broadband and high gain characteristics. As the simple method, it can be realized to combine the parabolic reflector and the broadband primary antenna which has the wide and constant beam width through the wide frequency band. This time, we have tried to develop the broadband and wide beam width antennas composed of the corrugated lens and the ridged antenna as the primary antenna for the parabolic reflector. This paper introduces its configuration and the good simulated results as follows.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"100 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128965233","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
Two-dimensional ARMA for FDTD Radiation Pattern Analysis 时域有限差分辐射方向图分析的二维ARMA
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391415
A. Nakao, T. Arima, T. Uno
{"title":"Two-dimensional ARMA for FDTD Radiation Pattern Analysis","authors":"A. Nakao, T. Arima, T. Uno","doi":"10.23919/ISAP47053.2021.9391415","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391415","url":null,"abstract":"The finite-difference time-domain (FDTD) method has been widely employed for analyzing various electromagnetic problems, including low-frequency problems. It provides accurate results in most cases, however, relatively long calculation time is required for slow convergence problems, such as array antennas. For this reason, the autoregressive moving average (ARMA) model has been applied to FDTD radiation pattern analysis because the radiation patterns calculation requires multi-dimensional (time and space) data. In this paper, we applied two-dimensional ARMA to FDTD radiation pattern analysis to reduce the calculation time. We confirm effectiveness of the method by calculating the radiation pattern of Yagi-Uda antenna.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125138478","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
Study on Backward Transient Scattered Electric Fields from a Coated Metal Cylinder 涂层金属圆柱体后向瞬态散射电场的研究
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391496
T. Kawano, K. Goto, T. Kon, N. Thamasuwan
{"title":"Study on Backward Transient Scattered Electric Fields from a Coated Metal Cylinder","authors":"T. Kawano, K. Goto, T. Kon, N. Thamasuwan","doi":"10.23919/ISAP47053.2021.9391496","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391496","url":null,"abstract":"We calculate backward transient scattered electric fields from a coated metal cylinder, which is covered with a homogeneous medium layer. A time-domain asymptotic-numerical solution (TD-ANS) is used for computations in a backward transient scattered electric field by a coated metal cylinder. An analysis method using the TD-ANS provides a basis of nondestructive testing for corrosion degree of rebar in steel reinforced concrete structures. By comparing with a reference solution, we examine an interpretation method of response waveforms of backward transient scattered electric fields by using the TD-ANS.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127013630","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
Frequency Control of a Varactor-Loaded Dual-Band Single-layer Shorted Microstrip Antenna Fed by an L-probe with Reduced Cross Polarization 减交叉极化l探针馈电变容二极管双带单层短路微带天线的频率控制
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391371
Shohei Honda, S. Saito, Y. Kimura
{"title":"Frequency Control of a Varactor-Loaded Dual-Band Single-layer Shorted Microstrip Antenna Fed by an L-probe with Reduced Cross Polarization","authors":"Shohei Honda, S. Saito, Y. Kimura","doi":"10.23919/ISAP47053.2021.9391371","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391371","url":null,"abstract":"This paper presents a frequency-tunable varactor-loaded dual-band single-layer shorted microstrip antenna (MSA) fed by an L-probe with reduced cross polarization. The proposed antenna consists of two L-shaped patches on both sides of a feeding L-probe arranged on a dielectric substrate. In order to miniaturize the antenna, the two patches with approximately a quarter wavelength in length are shorted at the opposite side to the L-probe with a via hole. A varactor diode is mounted on each shorted patch in the vicinity of the via hole. The resonant frequencies of the two patches can be controlled by the DC bias voltages applied to the varactor diodes independently. In order to reduce cross polarization radiated from the L-shaped patches, a varactor-loaded frequency-tunable dual-band shorted MSA with modified L-shaped patches is proposed. Although the fractional frequency-tunable ranges of the two patches are almost unchanged in comparison with the conventional MSA with L-shaped patches, measured cross-polarization of the proposed MSA with the modified L-shaped patches is improved by around 5 to 10 dB in the broadside direction.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129097314","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
2-D DOA Estimation for Coprime Cubic Array: A Cross-correlation Tensor Perspective 一种互相关张量视角下的互素三次阵二维DOA估计
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391380
Hang Zheng, Chengwei Zhou, Yong Wang, Zhiguo Shi
{"title":"2-D DOA Estimation for Coprime Cubic Array: A Cross-correlation Tensor Perspective","authors":"Hang Zheng, Chengwei Zhou, Yong Wang, Zhiguo Shi","doi":"10.23919/ISAP47053.2021.9391380","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391380","url":null,"abstract":"In this paper, a cross-correlation coarray tensor-based 2-D direction-of-arrival (DOA) estimation method for coprime cubic array (CCA) is proposed. Since the CCA received signals characterized by two coprime tensors cannot be collectively shaped as a single tensor to operate auto-correlation, the cross-correlation is introduced to calculate the coarray tensor statistics of CCA. A Nyquist-matched 4-D coarray tensor is then obtained for 2-D DOA estimation, where the designed structured tensorization is applied without spatial smoothing. Simulation results verify the effectiveness of the proposed method.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129134579","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: 5
A Circularly Polarized Cavity-Backed Stacked Patch Antenna for Wide-Angle Beam Scanning Millimeter-Wave Phased Array 一种用于广角波束扫描毫米波相控阵的圆极化腔背叠加贴片天线
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391252
S. Ikeda, Kei Yokokawa, N. Nakamoto, T. Fukasawa, M. Ohtsuka, Y. Inasawa
{"title":"A Circularly Polarized Cavity-Backed Stacked Patch Antenna for Wide-Angle Beam Scanning Millimeter-Wave Phased Array","authors":"S. Ikeda, Kei Yokokawa, N. Nakamoto, T. Fukasawa, M. Ohtsuka, Y. Inasawa","doi":"10.23919/ISAP47053.2021.9391252","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391252","url":null,"abstract":"This paper presents design and measurement of a circularly polarized cavity-backed patch antenna for a low- profile active electronically scanned array with a beam- scanning capability over a wide angle. The proposed antenna comprises upper patches, a spacer, and pin-fed lower patches to achieve low axial ratio across a wide angle of view and high efficiency. Each component is bonded without any screws, which enhances the manufacturability of the antenna and prevents degradation of the radiation pattern. A 16-element array is fabricated and measured. The measured pattern for co-polarization agrees well with the simulated one, and scan loss is approximately 5.5 dB in the ± 70 ° directions. In addition, low axial ratio of approximately 4.5 dB is obtained even in the ±70 ° directions.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130667712","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
A reduction of measurement points in cylindrical near field measurement by complex interpolation 用复插值法减少圆柱近场测量中的测点
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391332
Yuzo Hayashi, H. Arai
{"title":"A reduction of measurement points in cylindrical near field measurement by complex interpolation","authors":"Yuzo Hayashi, H. Arai","doi":"10.23919/ISAP47053.2021.9391332","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391332","url":null,"abstract":"This paper presents a method of reduction of measurement points in cylindrical near field using spline interpolation in complex domain to measure near field in high speed by using multi probe system.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121156768","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
Analysis of Strain Sensor using Millimeter Wave Chipless RFID Tag 毫米波无芯片RFID标签应变传感器分析
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391422
Yuta Watanabe
{"title":"Analysis of Strain Sensor using Millimeter Wave Chipless RFID Tag","authors":"Yuta Watanabe","doi":"10.23919/ISAP47053.2021.9391422","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391422","url":null,"abstract":"This paper presents a strain sensor using millimeter wave chipless RFID tag. The chipless RFID is composed of several tags and a reader. The reader reads the data from the resonant frequency of the tag's backscattered wave. The resonance frequency of presented strain sensor tag is depended on tag shape changing by strain. The shape of strain sensor tag is optimized by the finite-difference time-domain method and micro genetic algorithm in order to maximize variations of resonance frequencies. The optimization results show that the desired resonant frequencies and large variations are obtained.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126353724","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
RF Power Scavenger 射频功率清道夫
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391137
Diansambo Masembo, E. Wasige, Afesomeh Ofiare
{"title":"RF Power Scavenger","authors":"Diansambo Masembo, E. Wasige, Afesomeh Ofiare","doi":"10.23919/ISAP47053.2021.9391137","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391137","url":null,"abstract":"In this paper, the process of designing and building of energy harvesting device to collect \"free\" RF ambient energy is presented. This experiment was conducted for a bachelor’s degree Final Year Project at the University of Glasgow. The Power Scavenger device consists of a microstrip wideband antenna, a full wave rectifier and a capacitor as unit storage. The antenna has an omnidirectional radiation pattern in the horizontal plane and an -10-dB impedance bandwidth from 900 MHz to 2250 MHz. Measured results indicate energy harvesting up to 70 mV.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125741267","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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