Pub Date : 2017-10-01DOI: 10.1109/MAPE.2017.8250863
Junfeng Chen, H. Tan
Metamaterial have shown great power of controlling the EM waves, which is mainly about the propagation property of far field. In this paper, three-dimensional (3D) metamaterials are used in near field wireless power transfer (WPT) system for efficiency enhanced. The 3D metamaterial structure is composed of 4×4×1-array of five-turn spiral resonators. The WPT with bulk metamaterial is investigated theoretically, experimentally, and by simulation. To verify the enhancement of the WPT system by using 3D metamaterial, the four-coil systems integrated with and without bulk metamaterial are investigated by vector network analyzer (VNA). As a result, the maximum efficiency improvement of 20% is obtained with the 3D metamaterials at 1.5m transfer distance. At the same time, the range of efficient power transfer can be greatly extended.
{"title":"Investigation of wireless power transfer with 3D metamaterial for efficiency enhancement","authors":"Junfeng Chen, H. Tan","doi":"10.1109/MAPE.2017.8250863","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250863","url":null,"abstract":"Metamaterial have shown great power of controlling the EM waves, which is mainly about the propagation property of far field. In this paper, three-dimensional (3D) metamaterials are used in near field wireless power transfer (WPT) system for efficiency enhanced. The 3D metamaterial structure is composed of 4×4×1-array of five-turn spiral resonators. The WPT with bulk metamaterial is investigated theoretically, experimentally, and by simulation. To verify the enhancement of the WPT system by using 3D metamaterial, the four-coil systems integrated with and without bulk metamaterial are investigated by vector network analyzer (VNA). As a result, the maximum efficiency improvement of 20% is obtained with the 3D metamaterials at 1.5m transfer distance. At the same time, the range of efficient power transfer can be greatly extended.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114380235","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250794
Shan Da, Yujian Li, Junhong Wang
A novel antenna array with new double-layer feed network and ME-dipoles is proposed. The antenna array consists of a full-corporate-feed air-full hollow-waveguide in the lower layer, a SIW feed network in the second layer, and ME-dipole antenna as the radiating elements which can be fabricated entirely with PCB technique. A simulated −10 dB impedance bandwidth wider than 25% and a gain up to 24 dBi for a 16×16-element array antenna are obtained in E-band, and the antenna is being fabricated.
{"title":"E-band wideband ME-dipole antenna array with hollow-waveguide feed network","authors":"Shan Da, Yujian Li, Junhong Wang","doi":"10.1109/MAPE.2017.8250794","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250794","url":null,"abstract":"A novel antenna array with new double-layer feed network and ME-dipoles is proposed. The antenna array consists of a full-corporate-feed air-full hollow-waveguide in the lower layer, a SIW feed network in the second layer, and ME-dipole antenna as the radiating elements which can be fabricated entirely with PCB technique. A simulated −10 dB impedance bandwidth wider than 25% and a gain up to 24 dBi for a 16×16-element array antenna are obtained in E-band, and the antenna is being fabricated.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121147192","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250893
N. Shairi, M. A. Sazali, Z. Zakaria, I. Ibrahim, M. K. Zahari, B. Ahmad
In this paper, a hybrid triplexer design using microstrip coupled line resonators is proposed for the front end of multiband WiMAX system. The proposed triplexer consists of three different combinations of microstrip coupled line resonators, which are the open loop ring, parallel coupled line and folded coupled line. They were used as bandpass filters in the triplexer design to meet three different bandwidths in 2.3, 2.5, and 3.5 GHz bands. As a result, good agreements were achieved between simulation and measurement in terms of return and insertion losses, out of band attenuation, and bandwidth.
{"title":"Hybrid triplexer design using microstrip coupled line resonators for multiband WiMAX front end","authors":"N. Shairi, M. A. Sazali, Z. Zakaria, I. Ibrahim, M. K. Zahari, B. Ahmad","doi":"10.1109/MAPE.2017.8250893","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250893","url":null,"abstract":"In this paper, a hybrid triplexer design using microstrip coupled line resonators is proposed for the front end of multiband WiMAX system. The proposed triplexer consists of three different combinations of microstrip coupled line resonators, which are the open loop ring, parallel coupled line and folded coupled line. They were used as bandpass filters in the triplexer design to meet three different bandwidths in 2.3, 2.5, and 3.5 GHz bands. As a result, good agreements were achieved between simulation and measurement in terms of return and insertion losses, out of band attenuation, and bandwidth.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128596615","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250819
Yifan Du, Lian-chuan Ma, Yuan Cao
At present, the safety computer use the first come first served (FCFS) approach to transmit data stream, but this method does not distinguish the data stream types, which may cause safety critical data stream transmission timeout. In order to meet the communication requirements of the future safety computer, by analyzing the characteristics of communication data and the main factors influencing real-time performance in the safety computer, the constrained multilevel priority scheduling strategy is proposed. This strategy consider the constraint relation between data frames under the conditions of meeting the multi-priority when the data to be transmitted. Through the network calculation method, the communication delay of different data stream in the two modes is analyzed. The improved scheduling strategy shortens the maximum delay of emergency safety critical data stream by 22.5% in the current safety computer under the condition of increasing the limited delay of non-safety critical data stream, so the strategy can effectively improve communication real-time performance of emergency safety critical data stream.
{"title":"Real-time optimization analysis and design of communication on the safety computer of train control system","authors":"Yifan Du, Lian-chuan Ma, Yuan Cao","doi":"10.1109/MAPE.2017.8250819","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250819","url":null,"abstract":"At present, the safety computer use the first come first served (FCFS) approach to transmit data stream, but this method does not distinguish the data stream types, which may cause safety critical data stream transmission timeout. In order to meet the communication requirements of the future safety computer, by analyzing the characteristics of communication data and the main factors influencing real-time performance in the safety computer, the constrained multilevel priority scheduling strategy is proposed. This strategy consider the constraint relation between data frames under the conditions of meeting the multi-priority when the data to be transmitted. Through the network calculation method, the communication delay of different data stream in the two modes is analyzed. The improved scheduling strategy shortens the maximum delay of emergency safety critical data stream by 22.5% in the current safety computer under the condition of increasing the limited delay of non-safety critical data stream, so the strategy can effectively improve communication real-time performance of emergency safety critical data stream.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063371","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250905
Linlin Li, Xiangfu Meng
Proposed a cost-benefitanalyzation framework for distance education platforms from the view of IT-Governance theory. Major features of the framework include: (A) identifying performance from 5 domains of common IT-Governance models(B) assessing project risk and benefit by anonlinear evaluation algorithm(C) evaluating the cost-benefitratio on the inputs of risk, benefit and investment. The frameworkhas been applied in severalprojects. The paperdiscussed the models in the framework, and compared the evaluation results outputted by the framework and that byexperts.
{"title":"A cost-benefit analyzation framework for distance education platform planning","authors":"Linlin Li, Xiangfu Meng","doi":"10.1109/MAPE.2017.8250905","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250905","url":null,"abstract":"Proposed a cost-benefitanalyzation framework for distance education platforms from the view of IT-Governance theory. Major features of the framework include: (A) identifying performance from 5 domains of common IT-Governance models(B) assessing project risk and benefit by anonlinear evaluation algorithm(C) evaluating the cost-benefitratio on the inputs of risk, benefit and investment. The frameworkhas been applied in severalprojects. The paperdiscussed the models in the framework, and compared the evaluation results outputted by the framework and that byexperts.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518868","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250903
Yue Kong, Yikun Zhang, Yichuan Wang, Hao Chen, Xinhong Hei
With the development of cloud computing and IoT (Internet of Things), we almost arrive “Internet of everything”. The number of devices, which are deployed on the network edges, increasing sharply. It resulted in numerous data in sensing layer, and leads to network heavily loaded & high delay. Edge computing has its advantage “close to data source”, which can reduce the network latency significantly, but the ability of computing limited. In this paper, we propose a novel weight-polling based task classification scheme towards flexible computing. According to the demand characteristics of resources, tasks are divided into three types: computational, communication and storage. The goal of scheme is to trade off the costs between data transmission of cloud computing and compute of edge devices. The experimental results show that flexible computing can effectively reduce the network delay and response time, improve the resource utilization and task throughput, so as to take into account both the advantages of cloud computing and edge computing, to achieve the fairness of task scheduling.
{"title":"Weight-polling based task classification towards flexible computing","authors":"Yue Kong, Yikun Zhang, Yichuan Wang, Hao Chen, Xinhong Hei","doi":"10.1109/MAPE.2017.8250903","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250903","url":null,"abstract":"With the development of cloud computing and IoT (Internet of Things), we almost arrive “Internet of everything”. The number of devices, which are deployed on the network edges, increasing sharply. It resulted in numerous data in sensing layer, and leads to network heavily loaded & high delay. Edge computing has its advantage “close to data source”, which can reduce the network latency significantly, but the ability of computing limited. In this paper, we propose a novel weight-polling based task classification scheme towards flexible computing. According to the demand characteristics of resources, tasks are divided into three types: computational, communication and storage. The goal of scheme is to trade off the costs between data transmission of cloud computing and compute of edge devices. The experimental results show that flexible computing can effectively reduce the network delay and response time, improve the resource utilization and task throughput, so as to take into account both the advantages of cloud computing and edge computing, to achieve the fairness of task scheduling.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132718845","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250901
Fangfang Wang, Huiying Wu
Multipath exploitation for through-wall radar imaging (TWRI) under the framework of compressive sensing (CS) is a promising method to obtain a high-resolution image with limited number of measurements. The capability of the existing method is limited due to the model error caused by approximated dictionary matrix calculated using ray optics method. In this paper, multipath propagation is calculated by finite-difference time domain (FDTD) technique and then compensated to obtain the linear inverse model correctly. Afterwards, sparse reconstruction is used to solve this linear inverse problem. Numerical results demonstrate that the proposed approach yields high resolution image free of multipath ghosts, thus allowing to increase the signal-to-clutter ratio image.
{"title":"FDTD-based multipath exploitation for through-wall radar imaging in the framework of CS","authors":"Fangfang Wang, Huiying Wu","doi":"10.1109/MAPE.2017.8250901","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250901","url":null,"abstract":"Multipath exploitation for through-wall radar imaging (TWRI) under the framework of compressive sensing (CS) is a promising method to obtain a high-resolution image with limited number of measurements. The capability of the existing method is limited due to the model error caused by approximated dictionary matrix calculated using ray optics method. In this paper, multipath propagation is calculated by finite-difference time domain (FDTD) technique and then compensated to obtain the linear inverse model correctly. Afterwards, sparse reconstruction is used to solve this linear inverse problem. Numerical results demonstrate that the proposed approach yields high resolution image free of multipath ghosts, thus allowing to increase the signal-to-clutter ratio image.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132975790","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250884
Pengju Yang, R. Wu, Ye Zhao, X. Ren, Yuqiang Zhang
The modeling of time-varying nonlinear sea surfaces damped by monomolecular sea slicks is presented in the present study by combining Lombardini et al. model that can predict the hydrodynamic damping of rough sea surfaces in the presence of monomolecular sea slicks and “choppy wave model” (CWM) that can describing the nonlinear interactions between ocean waves. On this basis, the influence of sea slick's damping on Doppler spectra of backscattered echoes from contaminated “choppy wave model” (CWM) nonlinear sea surfaces is investigated by comparison with the Doppler spectra of clean sea surfaces. Numerical simulations show a narrowing of the Doppler spectra of contaminated sea surfaces compared with those of clean sea. In addition, it is also indicated that the Doppler shifts in slicks can decrease or increase, depending on incidence angles.
{"title":"A study of monomolecular slicks' damping effect on Doppler spectrum from one-dimensional time-varying rough sea surfaces","authors":"Pengju Yang, R. Wu, Ye Zhao, X. Ren, Yuqiang Zhang","doi":"10.1109/MAPE.2017.8250884","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250884","url":null,"abstract":"The modeling of time-varying nonlinear sea surfaces damped by monomolecular sea slicks is presented in the present study by combining Lombardini et al. model that can predict the hydrodynamic damping of rough sea surfaces in the presence of monomolecular sea slicks and “choppy wave model” (CWM) that can describing the nonlinear interactions between ocean waves. On this basis, the influence of sea slick's damping on Doppler spectra of backscattered echoes from contaminated “choppy wave model” (CWM) nonlinear sea surfaces is investigated by comparison with the Doppler spectra of clean sea surfaces. Numerical simulations show a narrowing of the Doppler spectra of contaminated sea surfaces compared with those of clean sea. In addition, it is also indicated that the Doppler shifts in slicks can decrease or increase, depending on incidence angles.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134511789","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250889
Guoxuqiang, Gongwenfei
In this paper, the Capon beamformer and the MUSIC algorithm are used to estimate the direction of the single narrowband interference in the Beidou B3 band. Results show that the angle dimension can be estimated depends on the antenna formation. Array error was also corrected by the way of calibration method under unideal condition. The mutual coupling matrix and the amplitude-phase difference matrix were extracted by HFSS, and their inverse matrix were substituted into the algorithm to correct the results. Computer simulation experiments prove this method is effective.
{"title":"Single interference direction finding algorithm research based on beidou four-element rectangular array and linear array","authors":"Guoxuqiang, Gongwenfei","doi":"10.1109/MAPE.2017.8250889","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250889","url":null,"abstract":"In this paper, the Capon beamformer and the MUSIC algorithm are used to estimate the direction of the single narrowband interference in the Beidou B3 band. Results show that the angle dimension can be estimated depends on the antenna formation. Array error was also corrected by the way of calibration method under unideal condition. The mutual coupling matrix and the amplitude-phase difference matrix were extracted by HFSS, and their inverse matrix were substituted into the algorithm to correct the results. Computer simulation experiments prove this method is effective.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"10 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132407681","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250871
H. Hou, Junhong Wang
When the artificial magnetic conductor and perfect electric conductor are periodically arranged in checkboard. The phase difference between the reflected wave from artificial magnetic conductor (AMC) and perfect electric conductor (PEC) is 180°. So its radar cross section is very low. If the target covered by this type of AMC, its RCS can be reduced significantly, which brings difficulty for detection. To detect low RCS target, the time domain scattering from AMC surface is studied. It is found that the amplitude of the scattering is very large in the beginning. And it becomes low after a while. We call this phenomenon the time domain electromagnetic sputtering effect. In this paper, the time domain backward scattering is analyzed by the equivalent circuit method. The experimental system is designed to measure the time domain sputtering effect.
{"title":"Study on time domain electromagnetic sputtering effect from low RCS chessboard surface with EBG structure","authors":"H. Hou, Junhong Wang","doi":"10.1109/MAPE.2017.8250871","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250871","url":null,"abstract":"When the artificial magnetic conductor and perfect electric conductor are periodically arranged in checkboard. The phase difference between the reflected wave from artificial magnetic conductor (AMC) and perfect electric conductor (PEC) is 180°. So its radar cross section is very low. If the target covered by this type of AMC, its RCS can be reduced significantly, which brings difficulty for detection. To detect low RCS target, the time domain scattering from AMC surface is studied. It is found that the amplitude of the scattering is very large in the beginning. And it becomes low after a while. We call this phenomenon the time domain electromagnetic sputtering effect. In this paper, the time domain backward scattering is analyzed by the equivalent circuit method. The experimental system is designed to measure the time domain sputtering effect.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132832507","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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