Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538137
Vijay Sharma, M. Hashmi
Two unique configurations of chipless RFID tag are reported in this paper. They consist of integrated Lresonators and cross polarized transmitting and receiving circular patch antennas. The validations of the proposed designs have been carried out using 8-bit data encoded tags, for the frequency band of 3.3–5.8 GHz, and microstrip circular antenna prototypes on Rogers substrate. The measured power difference of more than 15dB between the presence and absence bits, can enable precise detection of bits. These features blended with simple design scheme make them potentially suitable for low power applications such as IoTs and for mass production and deployments.
{"title":"Simple Chipless RFID Tag Configurations","authors":"Vijay Sharma, M. Hashmi","doi":"10.1109/APCAP.2018.8538137","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538137","url":null,"abstract":"Two unique configurations of chipless RFID tag are reported in this paper. They consist of integrated Lresonators and cross polarized transmitting and receiving circular patch antennas. The validations of the proposed designs have been carried out using 8-bit data encoded tags, for the frequency band of 3.3–5.8 GHz, and microstrip circular antenna prototypes on Rogers substrate. The measured power difference of more than 15dB between the presence and absence bits, can enable precise detection of bits. These features blended with simple design scheme make them potentially suitable for low power applications such as IoTs and for mass production and deployments.","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":"134151524","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.2018.8538185
Xingyun Zhang, C. Ruan, Jun Dai, T. Haq
A frequency and radiation pattern reconfigurable antenna based on graphene at terahertz band is presented in this paper. By applying different chemical potentials on the one arm of the proposed antenna while keeping it unchanged of the other arm, the antenna can operate at 1-2 THz, and the obtained maximum impedance bandwidth can be up to 26.68 %. Radiation patterns of the proposed antenna can also be controlled by the applied chemical potentials, which makes it very promising for beam-scanning in terahertz systems or devices.
{"title":"Frequency and Radiation Pattern Reconfigurable Graphene Square Spiral Antenna at Terahertz Band","authors":"Xingyun Zhang, C. Ruan, Jun Dai, T. Haq","doi":"10.1109/APCAP.2018.8538185","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538185","url":null,"abstract":"A frequency and radiation pattern reconfigurable antenna based on graphene at terahertz band is presented in this paper. By applying different chemical potentials on the one arm of the proposed antenna while keeping it unchanged of the other arm, the antenna can operate at 1-2 THz, and the obtained maximum impedance bandwidth can be up to 26.68 %. Radiation patterns of the proposed antenna can also be controlled by the applied chemical potentials, which makes it very promising for beam-scanning in terahertz systems or devices.","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":"134232270","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.2018.8538033
Jianping Li, Linda Shao, Ying Tang, Lei Wang, Yuliang Liang, Liang Liu, Xianling Liang, Jun-ping Geng, Weiren Zhu, R. Jin
A substrate covered holey parallel-plate-waveguide (PPW) is presented for manipulating the propagation of electromagnetic waves. This is achieved by constructing an effective gradient index profile via varying the sizes of holes on one side of the PPW. Size-variable unit lattices are used for achieving a smooth variation of the effective refractive index profile. As an example, a holey PPW with gradient effective index mimicking a convex lens is designed and numerically demonstrated via fullwave simulations.
{"title":"Wave-front manipulation in a substrate covered inhomogeneous holey waveguide","authors":"Jianping Li, Linda Shao, Ying Tang, Lei Wang, Yuliang Liang, Liang Liu, Xianling Liang, Jun-ping Geng, Weiren Zhu, R. Jin","doi":"10.1109/APCAP.2018.8538033","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538033","url":null,"abstract":"A substrate covered holey parallel-plate-waveguide (PPW) is presented for manipulating the propagation of electromagnetic waves. This is achieved by constructing an effective gradient index profile via varying the sizes of holes on one side of the PPW. Size-variable unit lattices are used for achieving a smooth variation of the effective refractive index profile. As an example, a holey PPW with gradient effective index mimicking a convex lens is designed and numerically demonstrated via fullwave simulations.","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":"133459650","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.2018.8538147
Hong Zhou, Kun-Ming Yu, Ming-Gong Lee, Chin-Chuan Han
Thanks to advances in wireless communication technologies, the wireless sensor network (WSNs) have been attracting a lot of attention from academic communities and successfully applied to various domains. Along with developments of the Industry 4.0, the WSNs start to play a vital role in the construction of smart factories and realization of intelligent manufacturing. Although, the industrial WSNs (IWSNs) presents great quantity of advantages, there still have some drawbacks to overcome such as challenges of the quality of data for IWSNs. In order to resolve the data missing problems in the context of IWSNs, the Last Observation Carried Forward method is adopted to estimate the missing value and reconstruct the sensing dataset which takes into account the temporal characteristics of sensing data in IWSNs. Through experiments, this method is proved to be an easy and effective measurement for missing value imputation of the large multi-dimensional sensing data achieved by the IWSNs.
{"title":"The Application of Last Observation Carried Forward Method for Missing Data Estimation in the Context of Industrial Wireless Sensor Networks","authors":"Hong Zhou, Kun-Ming Yu, Ming-Gong Lee, Chin-Chuan Han","doi":"10.1109/APCAP.2018.8538147","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538147","url":null,"abstract":"Thanks to advances in wireless communication technologies, the wireless sensor network (WSNs) have been attracting a lot of attention from academic communities and successfully applied to various domains. Along with developments of the Industry 4.0, the WSNs start to play a vital role in the construction of smart factories and realization of intelligent manufacturing. Although, the industrial WSNs (IWSNs) presents great quantity of advantages, there still have some drawbacks to overcome such as challenges of the quality of data for IWSNs. In order to resolve the data missing problems in the context of IWSNs, the Last Observation Carried Forward method is adopted to estimate the missing value and reconstruct the sensing dataset which takes into account the temporal characteristics of sensing data in IWSNs. Through experiments, this method is proved to be an easy and effective measurement for missing value imputation of the large multi-dimensional sensing data achieved by the IWSNs.","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":"127753961","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.2018.8538093
Murtala Aminu-Baba, M. Rahim, F. Zubir, M. Yusoff, N. Samsuri, O. Ayop, K. I. Jahun
A Printed monopole antenna with triple narrow bands plus one wideband for four bands operation, which covers the UMTS2100, WLAN2400/5200/5800, WiMAX 2500/3500/5500 and 5G6000 bands are presented in this paper. The antenna consists of a rectangular monopole radiator with four hexagonal SRR to generate multiple resonant modes. To improve the performance of the monopole antenna, four fractals elements are notched at the corners of the rectangular patch for gain and proper matching enhancement. The proposed antennas are designed and simulated using CST microwave studio on an FR4 substrate due to its low cost, ease of fabrication, low profile and lightweight.
{"title":"Planar Monopole Antenna With Hexagonal Split Ring Resonators","authors":"Murtala Aminu-Baba, M. Rahim, F. Zubir, M. Yusoff, N. Samsuri, O. Ayop, K. I. Jahun","doi":"10.1109/APCAP.2018.8538093","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538093","url":null,"abstract":"A Printed monopole antenna with triple narrow bands plus one wideband for four bands operation, which covers the UMTS2100, WLAN2400/5200/5800, WiMAX 2500/3500/5500 and 5G6000 bands are presented in this paper. The antenna consists of a rectangular monopole radiator with four hexagonal SRR to generate multiple resonant modes. To improve the performance of the monopole antenna, four fractals elements are notched at the corners of the rectangular patch for gain and proper matching enhancement. The proposed antennas are designed and simulated using CST microwave studio on an FR4 substrate due to its low cost, ease of fabrication, low profile and lightweight.","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":"121152938","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.2018.8538068
Xiaomei Ren, Junming Zhao, Ke Chen, T. Jiang
In this paper, a tunable low-frequency broadband metamaterial (MM) dual-polarized rasorber based on slot arrays has been proposed. The structure consists of one air gap sandwiched between top lossy FSS layer and bottom lossless FSS layer, which exhibits a transmission window at 1.70GHz and a 10dB broadband absorption from 0.75GHz to 3.30GHz while the thickness is less than 10% of the free space wavelength at the lowest operating frequency. A switch between absorber and rasorber can be achieved by turning PIN diodes on/off, respectively. We think the proposed rasorber can be applied in low-frequency band stealth technology. The proposed design could also be easily scaled to other frequencies if necessary.
{"title":"Tunable Low-Frequency Broadband Dual-Polarized Rasorber","authors":"Xiaomei Ren, Junming Zhao, Ke Chen, T. Jiang","doi":"10.1109/APCAP.2018.8538068","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538068","url":null,"abstract":"In this paper, a tunable low-frequency broadband metamaterial (MM) dual-polarized rasorber based on slot arrays has been proposed. The structure consists of one air gap sandwiched between top lossy FSS layer and bottom lossless FSS layer, which exhibits a transmission window at 1.70GHz and a 10dB broadband absorption from 0.75GHz to 3.30GHz while the thickness is less than 10% of the free space wavelength at the lowest operating frequency. A switch between absorber and rasorber can be achieved by turning PIN diodes on/off, respectively. We think the proposed rasorber can be applied in low-frequency band stealth technology. The proposed design could also be easily scaled to other frequencies if necessary.","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":"121199951","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.2018.8538260
Yibing Li, Mingyang Jiu, Qian Sun, Yansong Wang
With the sudden maneuver produced by a target, Extended Kalman Filter (EKF) will produce a non-ignored error. Then the sensor's observation range may be exceeded. In order to solve this problem, an optimization for target tracking based on EKF is proposed in this paper, exploiting sliding window to monitor the innovations to detect whether EKF has diverged and a modified EKF with expanding dimension model considering acceleration jerk is considered to be practicable to continue the algorithm instead. Simulation results are presented comparing EKF to improved EKF in different conditions and illustrating the feasibility and availability of the improved EKF.
{"title":"An Improved Target Tracking Algorithm Based on Extended Kalman Filter for UAV","authors":"Yibing Li, Mingyang Jiu, Qian Sun, Yansong Wang","doi":"10.1109/APCAP.2018.8538260","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538260","url":null,"abstract":"With the sudden maneuver produced by a target, Extended Kalman Filter (EKF) will produce a non-ignored error. Then the sensor's observation range may be exceeded. In order to solve this problem, an optimization for target tracking based on EKF is proposed in this paper, exploiting sliding window to monitor the innovations to detect whether EKF has diverged and a modified EKF with expanding dimension model considering acceleration jerk is considered to be practicable to continue the algorithm instead. Simulation results are presented comparing EKF to improved EKF in different conditions and illustrating the feasibility and availability of the improved EKF.","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":"114338040","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.2018.8538074
Jialin Shi, Zusheng Jin, Jianxuan Li, Yu Zuo
The ship-borne VHF communication antenna is one of the important transmitting and receiving antennas on the ship. The antenna directivity directly affects the performance of the whole communication system. In this paper, we adopt the method of MoM/PO to predict the radiation of shipboard VHF antenna under different conditions. Based on simulation data, we summarized the effect of ship superstructure, frequency, antenna height, and sea conditions on the performance of shipboard VHF communication antenna, which has a certain guiding significance for the design and layout of ship-borne antenna.
{"title":"Antenna Pattern Prediction for Ship-borne VHF Communication based on MOM/PO","authors":"Jialin Shi, Zusheng Jin, Jianxuan Li, Yu Zuo","doi":"10.1109/APCAP.2018.8538074","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538074","url":null,"abstract":"The ship-borne VHF communication antenna is one of the important transmitting and receiving antennas on the ship. The antenna directivity directly affects the performance of the whole communication system. In this paper, we adopt the method of MoM/PO to predict the radiation of shipboard VHF antenna under different conditions. Based on simulation data, we summarized the effect of ship superstructure, frequency, antenna height, and sea conditions on the performance of shipboard VHF communication antenna, which has a certain guiding significance for the design and layout of ship-borne antenna.","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":"116281187","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.2018.8538217
Yingran He, Yuehua Wu, B. Du
A frequency selective subreflectarray (FS-SR) is proposed for dual band Cassegrain reflector antenna. The proposed subreflectarray is composed of three layers, namely, one phase shifting layer (PSL) and two frequency selective layers (FSLs). The two FSLs could block the X band wave and pass the S band wave. The PSL is used to vary the reflection phase of circularly polarized X band wave up to 720° through element rotation. A FS-SR is modeled and simulated, and its scattering patterns under feed illuminations are obtained. The simulation results show that the FS-SR could indeed support S/X dual band operation. A prototype is fabricated and measured for verification.
{"title":"Frequency selective subreflectarray for S/X band reflector antenna","authors":"Yingran He, Yuehua Wu, B. Du","doi":"10.1109/APCAP.2018.8538217","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538217","url":null,"abstract":"A frequency selective subreflectarray (FS-SR) is proposed for dual band Cassegrain reflector antenna. The proposed subreflectarray is composed of three layers, namely, one phase shifting layer (PSL) and two frequency selective layers (FSLs). The two FSLs could block the X band wave and pass the S band wave. The PSL is used to vary the reflection phase of circularly polarized X band wave up to 720° through element rotation. A FS-SR is modeled and simulated, and its scattering patterns under feed illuminations are obtained. The simulation results show that the FS-SR could indeed support S/X dual band operation. A prototype is fabricated and measured for verification.","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":"125765320","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.2018.8538239
P. Parthiban, Boon-Chong Seet, Xue Jun Li
A display frame ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna design is proposed for museums in this paper. Given its conformal design, the antenna can seamlessly hide and blend with the museum environment. RFID asset tracking, personnel tracking and anti-theft surveillance, can be accomplished without altering the display artifacts or disturbing the aesthetics of the museum. The series fed patch antenna array, arranged in a circular fashion makes the RFID tag detection viable in any orientation at the near zone. At far-field distances, the antenna can detect tags up to 6 meters. The antenna has a bandwidth of 28 MHz and is designed for Region-2 RFID frequencies. It uses an unconventional substrate that is lightweight, non-toxic, chemically resistant and self-extinguishing if exposed to fire. More than one frame antennas can be operated using multi-port RFID readers to realize a distributed antenna system within the museum.
本文提出了一种用于博物馆的显示框架超高频（UHF）射频识别（RFID）阅读器天线设计。由于采用了保形设计，天线可以无缝隐藏并与博物馆环境融为一体。在不改变陈列文物或破坏博物馆美观的情况下，可实现 RFID 资产追踪、人员追踪和防盗监控。以环形方式排列的串联馈电贴片天线阵列使 RFID 标签检测在近区的任何方向都可行。在远场距离上，天线可以检测到 6 米以内的标签。该天线的带宽为 28 MHz，专为 Region-2 RFID 频率设计。它采用了一种非传统的基材，重量轻、无毒、耐化学腐蚀，遇火可自熄灭。可使用多端口 RFID 阅读器操作多个框架天线，以实现博物馆内的分布式天线系统。
{"title":"Display Frame UHF RFID Antenna for Museums","authors":"P. Parthiban, Boon-Chong Seet, Xue Jun Li","doi":"10.1109/APCAP.2018.8538239","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538239","url":null,"abstract":"A display frame ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna design is proposed for museums in this paper. Given its conformal design, the antenna can seamlessly hide and blend with the museum environment. RFID asset tracking, personnel tracking and anti-theft surveillance, can be accomplished without altering the display artifacts or disturbing the aesthetics of the museum. The series fed patch antenna array, arranged in a circular fashion makes the RFID tag detection viable in any orientation at the near zone. At far-field distances, the antenna can detect tags up to 6 meters. The antenna has a bandwidth of 28 MHz and is designed for Region-2 RFID frequencies. It uses an unconventional substrate that is lightweight, non-toxic, chemically resistant and self-extinguishing if exposed to fire. More than one frame antennas can be operated using multi-port RFID readers to realize a distributed antenna system within the museum.","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":"126081950","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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