Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538309
Y. Shestopalov, E. Smolkin, M. Snegur
The problem of diffraction of TE polarized EM waves by an open dielectric waveguide with a nonlinear inhomogeneous filling is under consideration. In such problems a nonlinear eigenvalue problem for a system of differential equations is arised. For the numerical solution a method based on the solution of the auxillary Cauchy problem is proposed. Numerical results are presented.
{"title":"TE-polarized Wave Diffraction by a Cylinder Covered with Nonlinear Dielectric Layer","authors":"Y. Shestopalov, E. Smolkin, M. Snegur","doi":"10.1109/APCAP.2018.8538309","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538309","url":null,"abstract":"The problem of diffraction of TE polarized EM waves by an open dielectric waveguide with a nonlinear inhomogeneous filling is under consideration. In such problems a nonlinear eigenvalue problem for a system of differential equations is arised. For the numerical solution a method based on the solution of the auxillary Cauchy problem is proposed. Numerical results are presented.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130681364","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.2018.8538026
A. Zhao, Fuqiang Ai
To enhance the performance of the 5G mm-wave antenna array, an antenna array based on the T-slot antenna is proposed. It is demonstrated that the 3D radiation pattern can be optimized when the T-slot antenna is adopted. It is also shown that compared to the normal rectangular slot antenna array, the radiation pattern of the T-slot antenna array is more suitable for mobile phone application because the T-slot antenna has more uniform antenna gain.
{"title":"5G mm-Wave Antenna Array Based on T-Slot Antenna for Mobile Terminals","authors":"A. Zhao, Fuqiang Ai","doi":"10.1109/APCAP.2018.8538026","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538026","url":null,"abstract":"To enhance the performance of the 5G mm-wave antenna array, an antenna array based on the T-slot antenna is proposed. It is demonstrated that the 3D radiation pattern can be optimized when the T-slot antenna is adopted. It is also shown that compared to the normal rectangular slot antenna array, the radiation pattern of the T-slot antenna array is more suitable for mobile phone application because the T-slot antenna has more uniform antenna gain.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123742071","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.2018.8538028
M. R. Akram, Chong He, Xianling Liang, Jun-ping Geng, R. Jin, Weiren Zhu
We present the design of novel metasurfaces capable of generating converging vortex beams carrying orbital angular momentum (OAM) at microwave frequencies. Isotropic unit cells are used for constructing such metasurfaces, which allows full phase control of 0 - 2 $pi$ with high efficiency. Two typical metasurfaces are designed for the generation of converging beams carrying OAM modes l = 1,2. The proposed metasurfaces are polarization-insensitive and can be applied to both linearly or circularly polarized waves.
{"title":"Polarization-insensitive metasurfaces for generating converging vortex beams carrying orbital angular momentum","authors":"M. R. Akram, Chong He, Xianling Liang, Jun-ping Geng, R. Jin, Weiren Zhu","doi":"10.1109/APCAP.2018.8538028","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538028","url":null,"abstract":"We present the design of novel metasurfaces capable of generating converging vortex beams carrying orbital angular momentum (OAM) at microwave frequencies. Isotropic unit cells are used for constructing such metasurfaces, which allows full phase control of 0 - 2 $pi$ with high efficiency. Two typical metasurfaces are designed for the generation of converging beams carrying OAM modes l = 1,2. The proposed metasurfaces are polarization-insensitive and can be applied to both linearly or circularly polarized waves.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116863612","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.2018.8538087
X. Bai
A novel honeycomb transmit-array lens (TAL) constructed from hexagonal metamaterial unit cell is presented for generating the convergent orbital angular momentum (OAM) beams. Compared with the most common square-lattice arrays, the proposed honeycomb TAL can provide a wider operating band, a larger phase-shift range and stable frequency responses as the function of angle and polarization of the incident EM wave. The simulated results verify the effectiveness of the proposed design.
{"title":"A Honeycomb Transmit-Array Lens with Hexagonal Lattice for Generation of OAM Waves","authors":"X. Bai","doi":"10.1109/APCAP.2018.8538087","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538087","url":null,"abstract":"A novel honeycomb transmit-array lens (TAL) constructed from hexagonal metamaterial unit cell is presented for generating the convergent orbital angular momentum (OAM) beams. Compared with the most common square-lattice arrays, the proposed honeycomb TAL can provide a wider operating band, a larger phase-shift range and stable frequency responses as the function of angle and polarization of the incident EM wave. The simulated results verify the effectiveness of the proposed design.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116901386","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}
Bridge vibration monitoring is very important since many bridges are constructed every year. To obtain full range, all weather and real-time bridge vibrations, a mm-wave radar is devised and used for monitoring the micro-deformation of these bridges. The measured results show that the designed mm-wave radar can well monitor the vibrations of the highway bridges with a super-resolution and high precision. Thus, the designed radar can be used for natural disaster monitoring, such as bridge monitoring, dam monitoring, debris flow monitoring applications.
{"title":"Vibrations Monitoring for Highway Bridge Using mm-Wave Radar","authors":"Yingsong Li, Zelong Shao, Xiangkun Zhang, Jingshan Jiang","doi":"10.1109/APCAP.2018.8538161","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538161","url":null,"abstract":"Bridge vibration monitoring is very important since many bridges are constructed every year. To obtain full range, all weather and real-time bridge vibrations, a mm-wave radar is devised and used for monitoring the micro-deformation of these bridges. The measured results show that the designed mm-wave radar can well monitor the vibrations of the highway bridges with a super-resolution and high precision. Thus, the designed radar can be used for natural disaster monitoring, such as bridge monitoring, dam monitoring, debris flow monitoring applications.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"14 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113932213","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.2018.8538094
Junfeng Wang, Jinyan Li, Z. Chen
To facilitate the node-based meshless method on numerical modeling and simulation of open-domain structures and radiation problems, we introduce and present the perfectly matched layer (PML) absorbing boundary condition (ABC) to the radial point interpolation method (RPIM) in this work. A numerical experiment of point resource radiating in 2D free space is employed to analysis electromagnetic wave absorbing performance of the proposed PML ABC formulation.
{"title":"Performance Analyses of Perfectly Matched Layer Applied to the Node-based RPIM Method","authors":"Junfeng Wang, Jinyan Li, Z. Chen","doi":"10.1109/APCAP.2018.8538094","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538094","url":null,"abstract":"To facilitate the node-based meshless method on numerical modeling and simulation of open-domain structures and radiation problems, we introduce and present the perfectly matched layer (PML) absorbing boundary condition (ABC) to the radial point interpolation method (RPIM) in this work. A numerical experiment of point resource radiating in 2D free space is employed to analysis electromagnetic wave absorbing performance of the proposed PML ABC formulation.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"213 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114041622","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.2018.8538047
Hongxu Tao, Yun Lin, Sen Wang
To obtain better performance and lower error localization algorithms, this paper proposes an algorithm based on Orthogonal Matching Pursuit (OMP) reconstruction and Basis Pursuit (BP) reconstruction algorithm for wireless sensor network node localization in combination with compressed sensing. These two algorithms both belong to the localization algorithm without ranging and meet three conditions when solving the problem of location algorithm which makes them more suitable for practical application. Compared with other existing range-free algorithms, such as the LSVM algorithm, the compressed sensing algorithm has better positioning performance. Therefore, the compressed sensing algorithm is a more reliable and practical positioning algorithm.
{"title":"A Node Localization Algorithm for Wireless Sensor Network Based on Compressed Sensing","authors":"Hongxu Tao, Yun Lin, Sen Wang","doi":"10.1109/apcap.2018.8538047","DOIUrl":"https://doi.org/10.1109/apcap.2018.8538047","url":null,"abstract":"To obtain better performance and lower error localization algorithms, this paper proposes an algorithm based on Orthogonal Matching Pursuit (OMP) reconstruction and Basis Pursuit (BP) reconstruction algorithm for wireless sensor network node localization in combination with compressed sensing. These two algorithms both belong to the localization algorithm without ranging and meet three conditions when solving the problem of location algorithm which makes them more suitable for practical application. Compared with other existing range-free algorithms, such as the LSVM algorithm, the compressed sensing algorithm has better positioning performance. Therefore, the compressed sensing algorithm is a more reliable and practical positioning algorithm.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124069458","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.2018.8538090
Fengyuan Yang, J. S. Ho
Integrating wireless technologies with implanted devices could enable important capabilities for medicine. However, existing wireless systems suffer from low efficiency of energy transmission from the human body owing to the mismatch between the dielectric properties of the body and that of freespace. We present an approach to enhance wireless transmission from the body by modifying the air-tissue interface with an electromagnetic grating. The grating enables the radiation of wave components otherwise trapped by total internal reflection into the far-field and increases the total power radiated into free-space space. We show in simulations that the grating can enhance transmission by a factor of 3 and propose methods for implementing such a device in a clinical setting.
{"title":"Enhancing Wireless Transmission from Implanted Devices with an Electromagnetic Grating","authors":"Fengyuan Yang, J. S. Ho","doi":"10.1109/APCAP.2018.8538090","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538090","url":null,"abstract":"Integrating wireless technologies with implanted devices could enable important capabilities for medicine. However, existing wireless systems suffer from low efficiency of energy transmission from the human body owing to the mismatch between the dielectric properties of the body and that of freespace. We present an approach to enhance wireless transmission from the body by modifying the air-tissue interface with an electromagnetic grating. The grating enables the radiation of wave components otherwise trapped by total internal reflection into the far-field and increases the total power radiated into free-space space. We show in simulations that the grating can enhance transmission by a factor of 3 and propose methods for implementing such a device in a clinical setting.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116665981","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}
This paper establishes a mutual inductance circuit model for the wireless power transmission (WPT) system, analyzes the impedance characteristics of the circuit, and takes the series compensation topology as the research object, analyzes the characteristics of the load power and transmission efficiency, and calculates and analyzes the mechanism of the eddy effect on the transmission of the resonant frequency of the underwater WPT, and designs the underwater WPT test circuit platform, in accordance with the optimized scheme, is realized about the distance 5cm, and the power is lkW underwater WPT. It provides theoretical guidance for the design and experiment of the WPT system.
{"title":"Research on Near Field Electromagnetic Wireless Power Transmission Technology","authors":"Guoning Xu, Xiaowei Du, Zhaojie Li, Yanlei Zhang, Wei Zhang, Qichao Zhu","doi":"10.1109/APCAP.2018.8538034","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538034","url":null,"abstract":"This paper establishes a mutual inductance circuit model for the wireless power transmission (WPT) system, analyzes the impedance characteristics of the circuit, and takes the series compensation topology as the research object, analyzes the characteristics of the load power and transmission efficiency, and calculates and analyzes the mechanism of the eddy effect on the transmission of the resonant frequency of the underwater WPT, and designs the underwater WPT test circuit platform, in accordance with the optimized scheme, is realized about the distance 5cm, and the power is lkW underwater WPT. It provides theoretical guidance for the design and experiment of the WPT system.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116893845","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.2018.8538085
Wendy S. L. Lee, C. Fumeaux, W. Withayachumnankul
Polarimetry of electromagnetic waves is important for molecular spectroscopy and high-data rate wireless communications in the terahertz frequency regime. Conventional bulk optical systems used to achieve this functionality have several drawbacks including scarcity of available materials, narrow bandwidth and low efficiency. To overcome these limitations, we employ metasurfaces with spatially changing broadband birefringence to attain the same functionality. We present a metasurface designed with birefringent resonators that are rotated to decompose a normally incident wave into its circularly polarized orthogonal components, namely left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) waves. On that basis, polarimetric information on the incident wave can be retrieved, including circular, elliptical and linear polarization states. This functionality is preserved over a simulated bandwidth of up to 76% which corresponds to the frequency region of 0.65 THz to 1.45 THz.
{"title":"Metasurfaces for Terahertz Polarimetry","authors":"Wendy S. L. Lee, C. Fumeaux, W. Withayachumnankul","doi":"10.1109/APCAP.2018.8538085","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538085","url":null,"abstract":"Polarimetry of electromagnetic waves is important for molecular spectroscopy and high-data rate wireless communications in the terahertz frequency regime. Conventional bulk optical systems used to achieve this functionality have several drawbacks including scarcity of available materials, narrow bandwidth and low efficiency. To overcome these limitations, we employ metasurfaces with spatially changing broadband birefringence to attain the same functionality. We present a metasurface designed with birefringent resonators that are rotated to decompose a normally incident wave into its circularly polarized orthogonal components, namely left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) waves. On that basis, polarimetric information on the incident wave can be retrieved, including circular, elliptical and linear polarization states. This functionality is preserved over a simulated bandwidth of up to 76% which corresponds to the frequency region of 0.65 THz to 1.45 THz.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115536017","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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