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2017 IEEE International Conference on Computational Electromagnetics (ICCEM)最新文献

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A low-profile surface wave antenna with bi-directional beam pattern using loop element 一种采用环形元件的双向波束方向图的低轮廓面波天线
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912761
Nobuhiro Imaizumi, T. Fukusako
{"title":"A low-profile surface wave antenna with bi-directional beam pattern using loop element","authors":"Nobuhiro Imaizumi, T. Fukusako","doi":"10.1109/COMPEM.2017.7912761","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912761","url":null,"abstract":"A low-profile antenna using loop element that has vertical polarization and bi-directional beam pattern is designed and measured. As a result, the proposed antenna can decrease the side lobe compare to the structure with a microstrip element and enhance the main lobe of the vertical plane in the parallel direction to the ground plane. The proposed antenna with only 3.2mm thickness, and gains is 7.0 dBi.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122832404","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 broadband dual-sense circularly polarized antenna 宽带双感圆极化天线
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912805
Kittima Lertsakwimam, C. Phongcharoenpanich, T. Fukusako
{"title":"A broadband dual-sense circularly polarized antenna","authors":"Kittima Lertsakwimam, C. Phongcharoenpanich, T. Fukusako","doi":"10.1109/COMPEM.2017.7912805","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912805","url":null,"abstract":"A dual-sense circularly polarized antenna is proposed with a broadband 3-dB AR characteristics. The antenna consists of circular ring, four straight probes, which are place in along diameter direction of ring, four straight bars, and a reflector. The antenna is excited by the four straight probes to obtain both right hand circular polarization (RHCP) and left hand circular polarization (LHCP). The antenna has a 10dB-retum loss from 1.1 GHz–2.2 GHz, and the 3dB Axial Ratio (AR) bandwidth is from 1.2 GHz–2.1 GHz (the relative bandwidth is 54.5 %) and more than −30dB-level of isolation in frequency range of 1.4–1.7 GHz. The antenna element broadside gain is approximately 9.5 dBic at 1.7 GHz.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127977108","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
An equivalent circuit expression of a photonic crystal bent waveguide with a microcavity 微腔光子晶体弯曲波导的等效电路表达式
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912811
Y. Naka, M. Nishimoto
{"title":"An equivalent circuit expression of a photonic crystal bent waveguide with a microcavity","authors":"Y. Naka, M. Nishimoto","doi":"10.1109/COMPEM.2017.7912811","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912811","url":null,"abstract":"A bent waveguide with a microcavity constructed by an air-bridge type two-dimensional photonic crystal slab is analyzed. The bent waveguide has a microcavity that improves the transmission efficiency by a resonant tunneling. In order to investigate the cause of transmission loss, the bent waveguide with microcavity is expressed by an equivalent circuit. It is confirmed that the transmittances for the bent waveguide and the equivalent circuit match with each other and the transmission loss is primarily due to the out-of-plane radiation in the microcavity.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123415362","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 design of sensor antenna for non-destructive testing 一种无损检测传感器天线的设计
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912781
Takahiro Koga, T. Fukusako
{"title":"A design of sensor antenna for non-destructive testing","authors":"Takahiro Koga, T. Fukusako","doi":"10.1109/COMPEM.2017.7912781","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912781","url":null,"abstract":"A very narrowband antenna for sensor antenna application is presented. The proposed sensor antenna detects the variation in permittivity of a backing material with the principle that the resonant frequency depends on the variation in dielectric of the backing materials. In this paper, some characteristics of transmitted power is discussed.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"7 13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122588559","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
Miniaturized high-band UWB monopole metal film antenna 小型化高波段超宽带单极金属薄膜天线
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912739
Fumiya Iwai, T. Tanabe, Shinichi Miyata, Eiji Furukawa, H. Kanaya
{"title":"Miniaturized high-band UWB monopole metal film antenna","authors":"Fumiya Iwai, T. Tanabe, Shinichi Miyata, Eiji Furukawa, H. Kanaya","doi":"10.1109/COMPEM.2017.7912739","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912739","url":null,"abstract":"High-band (7.5–10.25GHz) ultra-wide band (UWB) miniaturized on metal film is presented. Proposed antenna is suitable for position sensing system because it can be used in a variety of locations to be a flexible antenna by eliminating the dielectric substrate. Proposed antenna is constructed only on a radiation metal by using connector as a ground. In this paper, we designed high-band UWB antenna on metal film which size was designed 8.5mm × 6mm × 0.05mm. Also the proposed flexible antenna was bent in a semicircle and measured the characteristics.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122996585","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
Stability analysis of negative impedance converter 负阻抗变换器的稳定性分析
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912760
K. Eguchi, T. Fukusako
{"title":"Stability analysis of negative impedance converter","authors":"K. Eguchi, T. Fukusako","doi":"10.1109/COMPEM.2017.7912760","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912760","url":null,"abstract":"Negative Impedance Converter (NIC) have received much attention to improve the restriction of antenna gain-bandwidth tradeoff relationship. However, a significant problem with NIC is the potential instability of unwanted oscillation due to the presence of positive feedback. For solving this problem, we propose a NIC circuit technique which is stable and has wideband characteristics of negative impedance.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125563210","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
Effective three-dimensional microwave tomography based on metamaterial leaky wave antennas using linear sampling method 基于线性采样方法的超材料漏波天线三维有效微波层析成像
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-04-26 DOI: 10.1109/COMPEM.2017.7912726
Mehdi Salarkaleji, C. Wu
{"title":"Effective three-dimensional microwave tomography based on metamaterial leaky wave antennas using linear sampling method","authors":"Mehdi Salarkaleji, C. Wu","doi":"10.1109/COMPEM.2017.7912726","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912726","url":null,"abstract":"The linear sampling method (LSM) is a highly effective method to detect the shape of complex geometry. In this paper, we propose a novel kind of LSM using metamaterial (MTM) leaky wave antennas (LWAs) to reconstruct a multi-layered shape with modal forward scattering. By surrounding the target with the MTM LWAs, we demonstrate that the LSM is capable of reconstructing shapes efficiently in three dimensions (3D). The frequency-space mapping characteristics of MTM LWAs can lead to a comprehensive 3D microwave tomography, which provides a more efficient approach compared with traditional LSM methods. This unique combination of LSM and frequency scanning MTM antennas results in a highly effective and systematic method to reconstruct the 3D shape for unknown objects.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129745413","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
Meta-surface modeling method in FDTD analysis by introducing surface impedance boundary conditions 在时域有限差分分析中引入表面阻抗边界条件的元表面建模方法
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-03-08 DOI: 10.1109/COMPEM.2017.7912728
T. Arima, T. Uno
{"title":"Meta-surface modeling method in FDTD analysis by introducing surface impedance boundary conditions","authors":"T. Arima, T. Uno","doi":"10.1109/COMPEM.2017.7912728","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912728","url":null,"abstract":"In recent years, Metamaterials are widely developed. Especially, EBG and AMC are often utilized to antenna engineering. EBG and AMC are called as Meta-surface because these materials are thin structure. In order to design Meta-surface, Numerical analysis method such as an FDTD method is used. However, calculation cost of the FDTD method becomes large due to the complex structure of Meta-surface. In this research, we will indicate an effective modeling method. The method introduces surface impedance condition to model Meta-surface.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131585597","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: 4
Millimeter-wave aperture-coupled magneto-electric dipoles for multi-beam array applications 多波束阵列应用的毫米波孔径耦合磁电偶极子
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-03-08 DOI: 10.1109/COMPEM.2017.7912798
Yujian Li, Junhong Wang, K. Luk
{"title":"Millimeter-wave aperture-coupled magneto-electric dipoles for multi-beam array applications","authors":"Yujian Li, Junhong Wang, K. Luk","doi":"10.1109/COMPEM.2017.7912798","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912798","url":null,"abstract":"A 2 × 2 aperture-coupled magneto-electric (ME) dipole antenna array with linear polarization is presented for millimeter-wave communication systems. The substrate integrated waveguide (SIW) feed structures can be implemented into the two substrates below the antenna elements successfully. Good impedance bandwidth of 27.6% for reflection coefficient less than −10 dB, stable gain around 7 dBi over the operating band are obtained. Moreover, with the help of the ME-dipole sub-array, a 4 × 4 multi-beam array that can generate sixteen radiation beams is realized.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117200269","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 of high efficiency rectifier operating at 2.4 GHz 2.4 GHz高效率整流器的设计
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2017-03-08 DOI: 10.1109/COMPEM.2017.7912732
Xiaosheng Guo, T. Guo, Yang Yu, Xiang Ma, Qingfeng Zhang, Yi Gong, Yifan Chen
{"title":"Design of high efficiency rectifier operating at 2.4 GHz","authors":"Xiaosheng Guo, T. Guo, Yang Yu, Xiang Ma, Qingfeng Zhang, Yi Gong, Yifan Chen","doi":"10.1109/COMPEM.2017.7912732","DOIUrl":"https://doi.org/10.1109/COMPEM.2017.7912732","url":null,"abstract":"This letter proposes a new rectifier circuit design operating with a reasonable efficiency for RF energy harvesting at 2.45GHz. The circuit is composed of an impedance matching network, a voltage-doubler for converting RF power into DC voltage and a low-pass filter. Our device outperforms other published counterparts with a maximum conversion efficiency up to 73.4% when the input power is 4.5dBm. The simulation is implemented and a prototype is fabricated. The measured maximum RF-DC conversion efficiency of the prototype is about 52% at 4.5dBm input power.","PeriodicalId":199234,"journal":{"name":"2017 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122240081","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
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