Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538209
Geng Chen, Lei Zhao, Wenhua Yu, Hu Ren, H. Fu
In this paper, a novel acceleration method for dis-continuous Galerkin time domain (DGTD) algorithm on Sunway platform is proposed with a multi-level speedup technique. In the proposed method, the message passing interface (MPI) is used to connect each core-group (CG) and the registor level massaging passing interface (RL-MPI) is used to connect the slave core on each computing processing element (CPE) cluster, which efficiently overcomes the bottleneck caused by discrete memory accessing. Numerical results show that the performance of DGTD on SW26010 CPU can be dramatically improved by using RL-MPI.
{"title":"A Novel Acceleration Method for DGTD Algorithm on Sunway TaihuLight","authors":"Geng Chen, Lei Zhao, Wenhua Yu, Hu Ren, H. Fu","doi":"10.1109/APCAP.2018.8538209","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538209","url":null,"abstract":"In this paper, a novel acceleration method for dis-continuous Galerkin time domain (DGTD) algorithm on Sunway platform is proposed with a multi-level speedup technique. In the proposed method, the message passing interface (MPI) is used to connect each core-group (CG) and the registor level massaging passing interface (RL-MPI) is used to connect the slave core on each computing processing element (CPE) cluster, which efficiently overcomes the bottleneck caused by discrete memory accessing. Numerical results show that the performance of DGTD on SW26010 CPU can be dramatically improved by using RL-MPI.","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":"114417370","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.2018.8538081
A. Zhao
With the help of bandwidth potential analysis, the influence of the ground plane size on the achievable impedance bandwidth of LTE antenna is comprehensively studied. Various different ground plane sizes that can cover almost all the current portable devices such as mobile phone, PAD, tablet and notebook computer are considered. The variation trend between the ground plane size and the antenna bandwidth potential clearly demonstrates how the ground plane size affects the performance of the LTE antenna. The conclusion drawn in this work is confirmed by a real LTE antenna design and the LTE antenna designs reported in the literature.
{"title":"The Importance of Ground Plane Size on the LTE Antenna Design for Portable Devices","authors":"A. Zhao","doi":"10.1109/APCAP.2018.8538081","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538081","url":null,"abstract":"With the help of bandwidth potential analysis, the influence of the ground plane size on the achievable impedance bandwidth of LTE antenna is comprehensively studied. Various different ground plane sizes that can cover almost all the current portable devices such as mobile phone, PAD, tablet and notebook computer are considered. The variation trend between the ground plane size and the antenna bandwidth potential clearly demonstrates how the ground plane size affects the performance of the LTE antenna. The conclusion drawn in this work is confirmed by a real LTE antenna design and the LTE antenna designs reported in the literature.","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":"114418494","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.2018.8538173
M. Ismail, H. Majid, M. Rahim, M. Hamid, M. F. M. Yusof
This paper proposed a configuration of electromagnetic band gap (EBG) in array structure that placed in between the micro strip antenna to create radiation pattern and polarization reconfigurable features. The pattern reconfigurable features occurs by the effect of reflection wave of the EBG structure while the polarization reconfigurable features occurs by connecting the edge of square patch using PIN diode. This paper only shows the simulated results using the CST Microwave Studios. By switching the PIN diode (in ON and OFF state) on the EBG structures, the beam pattern are steered from 0 to +14 degree with gain of 7.2 dBi at 2.42 GHz.
{"title":"Pattern Reconfigurable Antenna using EBG Structures","authors":"M. Ismail, H. Majid, M. Rahim, M. Hamid, M. F. M. Yusof","doi":"10.1109/APCAP.2018.8538173","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538173","url":null,"abstract":"This paper proposed a configuration of electromagnetic band gap (EBG) in array structure that placed in between the micro strip antenna to create radiation pattern and polarization reconfigurable features. The pattern reconfigurable features occurs by the effect of reflection wave of the EBG structure while the polarization reconfigurable features occurs by connecting the edge of square patch using PIN diode. This paper only shows the simulated results using the CST Microwave Studios. By switching the PIN diode (in ON and OFF state) on the EBG structures, the beam pattern are steered from 0 to +14 degree with gain of 7.2 dBi at 2.42 GHz.","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":"115070219","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.2018.8538088
Vijay Sharma, Amogh Vithalkar, M. Hashmi
RFID technology is one of the enablers and key component in the broader Internet of Things (IoT) eco-system. However, power consumption is a major constraint in IoT devices and readers and apparently is a bottleneck in the deployment of such systems in IoT applications. A handshaking algorithm that reduces the power consumption of chipless RFID reader in noninterrogating scenarios is presented in this paper. The proposed algorithm is able to reduce the power consumption of the chipless RFID system by 70%.
{"title":"Power Saving Method in Chipless RFID Reader for IoT Applications","authors":"Vijay Sharma, Amogh Vithalkar, M. Hashmi","doi":"10.1109/APCAP.2018.8538088","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538088","url":null,"abstract":"RFID technology is one of the enablers and key component in the broader Internet of Things (IoT) eco-system. However, power consumption is a major constraint in IoT devices and readers and apparently is a bottleneck in the deployment of such systems in IoT applications. A handshaking algorithm that reduces the power consumption of chipless RFID reader in noninterrogating scenarios is presented in this paper. The proposed algorithm is able to reduce the power consumption of the chipless RFID system by 70%.","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":"116264172","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.2018.8538052
Ling-Yun Li, Tianyu Pen, Hao Sun
Metamaterial lens formed by metal grid is attracting much attention in millimeter wave antennas design. Different from millimeter wave applications, line width and thickness of the metal grid affect the lens antenna performance greatly when it comes to terahertz frequency bands. in this paper, general guides of designing and fabricating a metal grid metamaterial lens on terahertz frequency considering geometries are illustrated. The relation between plasma frequency of the metamaterial and line width of metal grid is studied at length and validated by electromagnetic simulation results. Advises are provided to design and fabricate terahertz metal grid metamterial lens.
{"title":"The Influence of Geometries on Terahertz Metal Grid Metamaterial Lens","authors":"Ling-Yun Li, Tianyu Pen, Hao Sun","doi":"10.1109/APCAP.2018.8538052","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538052","url":null,"abstract":"Metamaterial lens formed by metal grid is attracting much attention in millimeter wave antennas design. Different from millimeter wave applications, line width and thickness of the metal grid affect the lens antenna performance greatly when it comes to terahertz frequency bands. in this paper, general guides of designing and fabricating a metal grid metamaterial lens on terahertz frequency considering geometries are illustrated. The relation between plasma frequency of the metamaterial and line width of metal grid is studied at length and validated by electromagnetic simulation results. Advises are provided to design and fabricate terahertz metal grid metamterial lens.","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":"131974370","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.2018.8538191
Chih-Shun Hsu, Y. Chen, Tong-Ying Juang, Yi-Ting Wu
Indoor localization is an important issue for many indoor applications. Many deep learning-based indoor localization schemes have been proposed. However, these existing schemes cannot adjust according to different environment. To improve the existing schemes, a novel indoor localization scheme, which can adaptively adopt the proper fingerprint database according to the collected signals, is proposed in this paper. The experimental results show that the proposed scheme can reduce the localization error.
{"title":"An Adaptive Wi-Fi Indoor Localization Scheme using Deep Learning","authors":"Chih-Shun Hsu, Y. Chen, Tong-Ying Juang, Yi-Ting Wu","doi":"10.1109/APCAP.2018.8538191","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538191","url":null,"abstract":"Indoor localization is an important issue for many indoor applications. Many deep learning-based indoor localization schemes have been proposed. However, these existing schemes cannot adjust according to different environment. To improve the existing schemes, a novel indoor localization scheme, which can adaptively adopt the proper fingerprint database according to the collected signals, is proposed in this paper. The experimental results show that the proposed scheme can reduce the localization error.","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":"133845110","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.2018.8538023
Dongdong Wang, Liang Chen, Leyu Deng
In this paper, experimental comparison research was made on the performance of RF front-end electromagnetic pulses (EMP) protection modules based on ceramic gas discharge tubes (GDT) and glass spark protection gap (SPG) in the cases of injection of different kinds of EMP sources including damped sinusoidal oscillations in the frequency range of 10MHz $sim100$ MHz and dual exponential HEMP pulses with nanoseconds rising edge. At last, the performance of high power protection module based on multiple SPGs was tested when HEMP pulses with different voltage were injected into it. The research showed that protection module based on SPG had shorter action delay and smaller breakdown voltage in comparison with module based on GDT, and the power capability and protection effect of SPG-type module can be improved by means of connecting multiple SPG in parallel.
{"title":"Experimental Comparison Research on the performance of RF front-end EMP protection modules based on GDT and SPG","authors":"Dongdong Wang, Liang Chen, Leyu Deng","doi":"10.1109/APCAP.2018.8538023","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538023","url":null,"abstract":"In this paper, experimental comparison research was made on the performance of RF front-end electromagnetic pulses (EMP) protection modules based on ceramic gas discharge tubes (GDT) and glass spark protection gap (SPG) in the cases of injection of different kinds of EMP sources including damped sinusoidal oscillations in the frequency range of 10MHz $sim100$ MHz and dual exponential HEMP pulses with nanoseconds rising edge. At last, the performance of high power protection module based on multiple SPGs was tested when HEMP pulses with different voltage were injected into it. The research showed that protection module based on SPG had shorter action delay and smaller breakdown voltage in comparison with module based on GDT, and the power capability and protection effect of SPG-type module can be improved by means of connecting multiple SPG in parallel.","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":"116777902","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.2018.8538086
Guang-Yu Zhu, Houxing Zhou, W. Hong
A novel directional multilevel method using waveguide eigenmode expansion for electromagnetic scattering problems is proposed. Due to the use of waveguide eigenmode expansion with PML, the proposed method is essentially a spectral approach to construct the directional multilevel algorithm. Compared with sampling-based directional multilevel algorithms, the proposed method gives people a better physical insight about the directional multilevel structure. Besides, this method links several classical concepts together in microwave engineering in a natural way. A numerical result is provided to validate the proposed method.
{"title":"A Novel Directional Multilevel Method Using Waveguide Eigenmode Expansion","authors":"Guang-Yu Zhu, Houxing Zhou, W. Hong","doi":"10.1109/APCAP.2018.8538086","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538086","url":null,"abstract":"A novel directional multilevel method using waveguide eigenmode expansion for electromagnetic scattering problems is proposed. Due to the use of waveguide eigenmode expansion with PML, the proposed method is essentially a spectral approach to construct the directional multilevel algorithm. Compared with sampling-based directional multilevel algorithms, the proposed method gives people a better physical insight about the directional multilevel structure. Besides, this method links several classical concepts together in microwave engineering in a natural way. A numerical result is provided to validate the proposed method.","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":"123558770","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.2018.8538259
Shi-gang Zhou
This paper presents the design of a wideband antenna that is built in the platform to achieve totally conformal property. Particular shape slots are cut on the surface of the platform and matching structures are used in the platform. Simulated results show that the proposed wave antennas can cover the bandwidth of 2.0-6.0 GHz with VSWR <2.0. The good end-fire radiation beams are obtained over the endfire frequency band and the realized gain in the endfire direction is higher than 6.0dB over the whole frequency. This antenna will be fabricated with metal and plastic 3D Printing techniques.
{"title":"Design of Wideband and Conformal Antenna with Endfire Radiation Patterns","authors":"Shi-gang Zhou","doi":"10.1109/APCAP.2018.8538259","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538259","url":null,"abstract":"This paper presents the design of a wideband antenna that is built in the platform to achieve totally conformal property. Particular shape slots are cut on the surface of the platform and matching structures are used in the platform. Simulated results show that the proposed wave antennas can cover the bandwidth of 2.0-6.0 GHz with VSWR <2.0. The good end-fire radiation beams are obtained over the endfire frequency band and the realized gain in the endfire direction is higher than 6.0dB over the whole frequency. This antenna will be fabricated with metal and plastic 3D Printing techniques.","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":"121763375","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.2018.8538062
Yijie Gong, Dongsheng Li, Mingming Wang, Ziming Liu
In the Compact Antenna Test Range system, the high-precision feed positioning device can improve the electromagnetic characteristics of the system. In this paper, a new type of precise offset-focus feed positioning device is designed and applied in the antenna test. The positioning device is composed of feed horns, a honeycomb sandwich support structure and a robot. $mathrm{A}pm 3 ^{circ}$ offset-focus feed trajectory is designed. Using the ABB IRB 6640 industrial robot instead of the traditional mechanical feed support bracket to move the feed on the trajectory. The on-site adjustment and compensation of the trajectory is achieved by a closed-loop adjustment system consisting of the robot and a laser tracker. After the adjustment, the positioning accuracy of the feed is guaranteed within 0.12 mm, which meets the electromagnetic design requirements. This new feed positioning device can achieve automatic offset-focus antenna test of multi-frequency in an unmanned environment.
{"title":"Robot-based Precise Offset-Focus Feed Control System Used in the Compact Antenna Test Range","authors":"Yijie Gong, Dongsheng Li, Mingming Wang, Ziming Liu","doi":"10.1109/APCAP.2018.8538062","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538062","url":null,"abstract":"In the Compact Antenna Test Range system, the high-precision feed positioning device can improve the electromagnetic characteristics of the system. In this paper, a new type of precise offset-focus feed positioning device is designed and applied in the antenna test. The positioning device is composed of feed horns, a honeycomb sandwich support structure and a robot. $mathrm{A}pm 3 ^{circ}$ offset-focus feed trajectory is designed. Using the ABB IRB 6640 industrial robot instead of the traditional mechanical feed support bracket to move the feed on the trajectory. The on-site adjustment and compensation of the trajectory is achieved by a closed-loop adjustment system consisting of the robot and a laser tracker. After the adjustment, the positioning accuracy of the feed is guaranteed within 0.12 mm, which meets the electromagnetic design requirements. This new feed positioning device can achieve automatic offset-focus antenna test of multi-frequency in an unmanned environment.","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":"123947640","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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