Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538082
Yuting Zhao, Yingsong Li, Guohui Yang
A simple defected isolation wall is proposed for giving an enhanced isolation between a closely installed patch antenna and a microstrip transmission line (TL). The distance between the patch antenna and TL is set to be 2mm. For obtaining a lower mutual coupling between the used antenna and the TL, a G-shaped defected isolation wall is designed and vertically placed between the used patch antenna and TL. The simulation results gave a conformation that the mutual coupling is decreased by 25 dB, and the performance of the patch antenna and microstrip transmission line are not affected.
{"title":"A G-Shaped Defected Isolation Wall for Mutual Coupling Reduction Between Patch Antenna and Microstrip Transmission Line","authors":"Yuting Zhao, Yingsong Li, Guohui Yang","doi":"10.1109/APCAP.2018.8538082","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538082","url":null,"abstract":"A simple defected isolation wall is proposed for giving an enhanced isolation between a closely installed patch antenna and a microstrip transmission line (TL). The distance between the patch antenna and TL is set to be 2mm. For obtaining a lower mutual coupling between the used antenna and the TL, a G-shaped defected isolation wall is designed and vertically placed between the used patch antenna and TL. The simulation results gave a conformation that the mutual coupling is decreased by 25 dB, and the performance of the patch antenna and microstrip transmission line are not affected.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125127479","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538122
Hongjie Wang, Hengxu Wang, T. Jiang, Yuqi Yuan
Electromagnetic positioning systems are now widely used in virtual reality technology and their accuracy directly affects the interaction process which suffers from the distortions of the electromagnetic field used in calculating the tracker sensor's position. The calibration process of the electromagnetic positioning system mainly compensates and eliminates the static error, and relates to the equipment and the environment around the electromagnetic positioning system. The equipment used in the experiment was Pholhemus's 3SPACE FASTRAK, which was used in a training system. In this paper, taking into account factors such as algorithm complexity and predictability, second-order polynomial fitting and third-order polynomial fitting algorithms are used to compensate for position and orientation errors of the sensor. Experimental and simulation results show that the third-order polynomial fitting has greatly improved the position and direction accuracy.
{"title":"Research on Electromagnetic Positioning Calibration based on a Polynomial Fitting","authors":"Hongjie Wang, Hengxu Wang, T. Jiang, Yuqi Yuan","doi":"10.1109/APCAP.2018.8538122","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538122","url":null,"abstract":"Electromagnetic positioning systems are now widely used in virtual reality technology and their accuracy directly affects the interaction process which suffers from the distortions of the electromagnetic field used in calculating the tracker sensor's position. The calibration process of the electromagnetic positioning system mainly compensates and eliminates the static error, and relates to the equipment and the environment around the electromagnetic positioning system. The equipment used in the experiment was Pholhemus's 3SPACE FASTRAK, which was used in a training system. In this paper, taking into account factors such as algorithm complexity and predictability, second-order polynomial fitting and third-order polynomial fitting algorithms are used to compensate for position and orientation errors of the sensor. Experimental and simulation results show that the third-order polynomial fitting has greatly improved the position and direction accuracy.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124331546","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538121
J. Qiu, Hao Liu, Nan-nan Wang, Shengchang Lan
The application of millimeter-wave imaging technology in the security surveillance fields has currently become one of the most popular research directions. In the millimeter- wave imaging system, focusing antennas with large aperture and small focal diameter ratio are preferred to improve the spatial resolution. This paper has investigated the design of two types of multi-beam focusing antennas including a lens antenna with a focal diameter ratio of1.25 and an Ellipsoid reflector antenna with focal diameter ratio of 0.88. Simulations and experiment results have showed the change of the focal spot on the antenna axis and target plane each when the antenna feed is located at the focal point and offset-focusing. A millimeter-wave imaging system has been constructed and verified by the experiment.
{"title":"Research on Multi-Beam Focusing Antenna for Passive Millimeter Wave Imaging System","authors":"J. Qiu, Hao Liu, Nan-nan Wang, Shengchang Lan","doi":"10.1109/APCAP.2018.8538121","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538121","url":null,"abstract":"The application of millimeter-wave imaging technology in the security surveillance fields has currently become one of the most popular research directions. In the millimeter- wave imaging system, focusing antennas with large aperture and small focal diameter ratio are preferred to improve the spatial resolution. This paper has investigated the design of two types of multi-beam focusing antennas including a lens antenna with a focal diameter ratio of1.25 and an Ellipsoid reflector antenna with focal diameter ratio of 0.88. Simulations and experiment results have showed the change of the focal spot on the antenna axis and target plane each when the antenna feed is located at the focal point and offset-focusing. A millimeter-wave imaging system has been constructed and verified by the experiment.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123503588","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538292
Xiao-Min Pan, Si-Lu Huang, Wei Song, X. Sheng
Error controllable skeletonization based on the interpolative decomposition (ID) is developed to accelerate the wide angular sweeping of scattering from the target with complex shape.Several improvements are proposed to alleviate the associated memory bottleneck. Numerical experiments demonstrate the capability of the skeletonization scheme.
{"title":"Fast wide angular sweeping of scattering from electrically large and complex targets","authors":"Xiao-Min Pan, Si-Lu Huang, Wei Song, X. Sheng","doi":"10.1109/APCAP.2018.8538292","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538292","url":null,"abstract":"Error controllable skeletonization based on the interpolative decomposition (ID) is developed to accelerate the wide angular sweeping of scattering from the target with complex shape.Several improvements are proposed to alleviate the associated memory bottleneck. Numerical experiments demonstrate the capability of the skeletonization scheme.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122755667","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538060
Mahsa Rasteh, J. Hesselbarth
This paper studies single-fed and multiply-fed dipole antennas for RFID tags and their application. One major problem affecting the performance of an RFID tag is the variation of feed-point impedance when the antenna is attached onto media with different dielectric permittivity. It is proposed to switch between different feed-points of the antenna to reduce feed impedance mismatch. This study identifies the worst-case level of reflection coefficient magnitude of dipole antennas with a single feed and with two feeds, while varying the positions of the feed points, for a scenario where the antennas are attached to a dielectric half-space of relative permittivity ranging from 1 to 50.
{"title":"Dipole Antenna with Multiple Feeds Adapting to the Environment","authors":"Mahsa Rasteh, J. Hesselbarth","doi":"10.1109/APCAP.2018.8538060","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538060","url":null,"abstract":"This paper studies single-fed and multiply-fed dipole antennas for RFID tags and their application. One major problem affecting the performance of an RFID tag is the variation of feed-point impedance when the antenna is attached onto media with different dielectric permittivity. It is proposed to switch between different feed-points of the antenna to reduce feed impedance mismatch. This study identifies the worst-case level of reflection coefficient magnitude of dipole antennas with a single feed and with two feeds, while varying the positions of the feed points, for a scenario where the antennas are attached to a dielectric half-space of relative permittivity ranging from 1 to 50.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124773820","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538257
Wenmei Zhang, Caixia Feng, Min Yang
This paper presents a novel angle-based chipless RFID tag with high capacity. It encodes information with the angle between two arms of the V-shaped scatterer and is identified through measuring the two orthogonal scattering field. The advantage of this type of tag is that every unit can encode multi-bits information. Also, for different codes of one unit, the proposed tag ocupies the same spectrum. This is helpful to improve the spectrum efficiency. Finally, the tag is used to design the resistive transducer.
{"title":"Angle-Based Chipless RFID Tag and Its Application","authors":"Wenmei Zhang, Caixia Feng, Min Yang","doi":"10.1109/APCAP.2018.8538257","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538257","url":null,"abstract":"This paper presents a novel angle-based chipless RFID tag with high capacity. It encodes information with the angle between two arms of the V-shaped scatterer and is identified through measuring the two orthogonal scattering field. The advantage of this type of tag is that every unit can encode multi-bits information. Also, for different codes of one unit, the proposed tag ocupies the same spectrum. This is helpful to improve the spectrum efficiency. Finally, the tag is used to design the resistive transducer.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122076868","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538105
Shin-Rou Lee, E. Lim, Fwee-Leong Bong, B. Chung, K. Lee
A miniature metal-mountable UHF tag antenna with a geometrical dimension of 32 mm $times$ 35 mm $times$ 1.6 mm (0.097$lambda$ $times$0.106$lambda$$times$0.0049$lambda$) is proposed. It is made of two planar inverted-F antennas (PIFAs) placing side-by-side. Two pairs of notches are created on the top surface of the patches for tuning the tag's resonant frequency. The antenna impedance can be easily matched with the chip impedance at different tag's resonances. It is found that the realized gain of the tag antenna can be improved by broadening the vertical arm width. With the use of 4W EIRP, the tag antenna is found to be able to achieve a measured read range of 8.7 m on metals, with little fluctuation in the tag's resonance for all cases.
提出了一种几何尺寸为32 mm $times$ 35 mm $times$ 1.6 mm (0.097 $lambda$$times$ 0.106 $lambda$$times$ 0.0049 $lambda$)的微型金属贴装UHF标签天线。它是由两个平面倒f天线(pifa)并排放置。贴片的上表面有两对凹槽，用于调整标签的谐振频率。天线阻抗可以很容易地与不同标签共振下的芯片阻抗匹配。研究发现，拓宽垂臂宽度可以提高标签天线的实际增益。使用4W EIRP时，发现标签天线能够在金属上实现8.7 m的测量读取范围，并且在所有情况下标签的谐振波动很小。
{"title":"Miniature PIFA-like Patch Antenna for UHF RFID Tag Design","authors":"Shin-Rou Lee, E. Lim, Fwee-Leong Bong, B. Chung, K. Lee","doi":"10.1109/APCAP.2018.8538105","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538105","url":null,"abstract":"A miniature metal-mountable UHF tag antenna with a geometrical dimension of 32 mm $times$ 35 mm $times$ 1.6 mm (0.097$lambda$ $times$0.106$lambda$$times$0.0049$lambda$) is proposed. It is made of two planar inverted-F antennas (PIFAs) placing side-by-side. Two pairs of notches are created on the top surface of the patches for tuning the tag's resonant frequency. The antenna impedance can be easily matched with the chip impedance at different tag's resonances. It is found that the realized gain of the tag antenna can be improved by broadening the vertical arm width. With the use of 4W EIRP, the tag antenna is found to be able to achieve a measured read range of 8.7 m on metals, with little fluctuation in the tag's resonance for all cases.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126305008","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538243
Mei Yu, H. Geng, T. Hua, Weiwei Xu, Zhi Ning Chen
Bowtie antennas integrated with a pair of stubs and meanders are proposed for HTS YBCO Josephson junction impedance matching. A pair of stubs are used for small impedance matching, while the pairs of meanders are used to tune the reactance of impedance as a coupled impedance network with the stub. The results show that two pairs of meanders affect the reactance while keeping the resistance nearly unchanged. In addition, this antenna keeps symmetrical radiation patterns even with the pair of meanders asymmetrically introduced into the bowtie antenna over the bandwidth.
{"title":"Reactance Matching for Superconducting YBCO Josephson Junction Detector Using Bowtie Antenna","authors":"Mei Yu, H. Geng, T. Hua, Weiwei Xu, Zhi Ning Chen","doi":"10.1109/APCAP.2018.8538243","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538243","url":null,"abstract":"Bowtie antennas integrated with a pair of stubs and meanders are proposed for HTS YBCO Josephson junction impedance matching. A pair of stubs are used for small impedance matching, while the pairs of meanders are used to tune the reactance of impedance as a coupled impedance network with the stub. The results show that two pairs of meanders affect the reactance while keeping the resistance nearly unchanged. In addition, this antenna keeps symmetrical radiation patterns even with the pair of meanders asymmetrically introduced into the bowtie antenna over the bandwidth.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114951115","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538201
X. Tang, Qingfeng Zhang, Sanming Hu, Yifan Chen
In this paper, a simple and easy-to-fabricate endfire antenna design based on spoof surface plasmon polaritions (SSPPs) is proposed. Being implemented on a thin dielectric substrate, the antenna employs the SSPP unit cells to support the propagating surface waves and an extended substrate improves the radiation to the free space. The proposed antenna can generate endfire radiation beam at the operational frequency of 13 GHz with maximum realized gain of 12.9 dBi and a high radiation efficiency of 78 %.
{"title":"Spoof Surface Plasmon Polaritons (SSPP) for Endfire Radiation","authors":"X. Tang, Qingfeng Zhang, Sanming Hu, Yifan Chen","doi":"10.1109/APCAP.2018.8538201","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538201","url":null,"abstract":"In this paper, a simple and easy-to-fabricate endfire antenna design based on spoof surface plasmon polaritions (SSPPs) is proposed. Being implemented on a thin dielectric substrate, the antenna employs the SSPP unit cells to support the propagating surface waves and an extended substrate improves the radiation to the free space. The proposed antenna can generate endfire radiation beam at the operational frequency of 13 GHz with maximum realized gain of 12.9 dBi and a high radiation efficiency of 78 %.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132076746","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}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538018
Qian Chen, Hong-tao Zhang, Xiaolin Zhang, M. Jin, Wei Wang
In this paper, an X band dual-polarized shared aperture phased array antenna using waveguide and microstrip antennas is proposed. The vertically polarized ridge waveguide antenna operates at the frequency band of 9.5-9.9 GHz. The horizontally polarized microstrip dipole antenna is mounted vertically above the ridge waveguide antenna and operates at the frequency band of 8-12 GHz. In order to achieve large scan angles, the shared aperture antenna is tightly integrated using a deep ridge waveguide and back-to-back arrangement of microstrip dipole antennas. The waveguide antenna can scan at least 20 degrees in one dimension; moreover, the microstrip dipole antennas can scan 60 degrees in two dimensions.
{"title":"An X Band Dual-polarized Shared Aperture Antenna Using Waveguide and Microstrip Antennas","authors":"Qian Chen, Hong-tao Zhang, Xiaolin Zhang, M. Jin, Wei Wang","doi":"10.1109/APCAP.2018.8538018","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538018","url":null,"abstract":"In this paper, an X band dual-polarized shared aperture phased array antenna using waveguide and microstrip antennas is proposed. The vertically polarized ridge waveguide antenna operates at the frequency band of 9.5-9.9 GHz. The horizontally polarized microstrip dipole antenna is mounted vertically above the ridge waveguide antenna and operates at the frequency band of 8-12 GHz. In order to achieve large scan angles, the shared aperture antenna is tightly integrated using a deep ridge waveguide and back-to-back arrangement of microstrip dipole antennas. The waveguide antenna can scan at least 20 degrees in one dimension; moreover, the microstrip dipole antennas can scan 60 degrees in two dimensions.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130027051","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}
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