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2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)最新文献

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Aircraft–Receiver Distance Estimation Using ADS-B Signal Strength for Position Verification Application 基于ADS-B信号强度的机接收机距离估计在位置验证中的应用
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539711
J. Naganawa, H. Miyazaki
{"title":"Aircraft–Receiver Distance Estimation Using ADS-B Signal Strength for Position Verification Application","authors":"J. Naganawa, H. Miyazaki","doi":"10.1109/APWC52648.2021.9539711","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539711","url":null,"abstract":"Estimation of aircraft–receiver distance based on the received signal strength (RSS) of a civil aviation system called the Automatic Dependent Surveillance—Broadcast (ADS-B) was investigated. The estimated distance was intended to be used for position verification, which is a countermeasure against spoofing. A two-step method was proposed in order to mitigate the uncertainty issue regarding the aircraft’s equivalent isotropically radiated power (EIRP), leveraging the regularity of flight schedule. The first step is calibration, where the bias of the EIRP from a nominal value is obtained under the assumption that the ADS-B position is true. The obtained value is stored to be used in the second step, where the distance is estimated when the same aircraft reappears. The proposed method was evaluated with measurement data. As a result, distance errors with a mean of 0.8 km and a standard deviation of 18.6 km were obtained. Also, the resulting error distribution was approximated by a normal distribution.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124127086","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}
引用次数: 0
BOR-BORs Antenna BOR-BORs天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539705
H. Nakano, T. Abe, J. Yamauchi
{"title":"BOR-BORs Antenna","authors":"H. Nakano, T. Abe, J. Yamauchi","doi":"10.1109/APWC52648.2021.9539705","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539705","url":null,"abstract":"A system composed of a feeding body of revolution (BOR) and parasitic BORs surrounding the feeding BOR is investigated for operation as a beam-steerable antenna. The system is called the BOR-BORs antenna. The parasitic BORs, each with an on-off switching circuit connected between the BOR bottom end and the ground plane, are indirectly excited by the feeding BOR. Investigation of the feeding BOR reveals that it radiates a conical beam. This beam is transformed into a high gain radiation beam in a specific direction by the parasitic BORs and a particular combination of states for the switching circuits (open- or closed-circuited with respect to the ground plane). Other characteristics of the beam-steerable BOR-BORs antenna, including the radiation pattern and VSWR, are also discussed.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127563922","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}
引用次数: 0
Wideband Circularly Polarized 3D-Printed Dielectric Rod Antenna with Double-ridged Waveguide Feed 带双脊波导馈电的宽带圆极化3d打印介质杆天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539573
Jin Huang, S. J. Chen, Z. Xue, W. Withayachumnankul, C. Fumeaux
{"title":"Wideband Circularly Polarized 3D-Printed Dielectric Rod Antenna with Double-ridged Waveguide Feed","authors":"Jin Huang, S. J. Chen, Z. Xue, W. Withayachumnankul, C. Fumeaux","doi":"10.1109/APWC52648.2021.9539573","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539573","url":null,"abstract":"In the last decade, 3D printing technology has demonstrated a number of merits, including time- and labor-saving, capability to fabricate complicated shapes, and diversity of materials choices. These advantages offer potential for rapid prototyping of advanced antenna designs, particularly for designs in the microwave region due to the compatibility between antenna dimensions and the printing resolution of 3D printers. Antennas with circular polarization (CP) have been employed as important components in wireless systems, due to their superiorities of mitigating multi-path fading, avoiding polarization mismatch, and providing flexibility in the orientation of mobile antennas. Meanwhile, wideband end-fire antennas with CP are in high demand in various applications, such as satellite and vehicle communications.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121460296","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}
引用次数: 0
Focused Radiative Wireless Power Transfer in The Presence of Random Scatterers 随机散射体存在下的聚焦辐射无线电力传输
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539524
Z. Katbay, D. Sounas, M. Ismail
{"title":"Focused Radiative Wireless Power Transfer in The Presence of Random Scatterers","authors":"Z. Katbay, D. Sounas, M. Ismail","doi":"10.1109/APWC52648.2021.9539524","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539524","url":null,"abstract":"Microwave power transfer (MPT) schemes have been proposed both in the near- and far-field (Fraunhofer) zones, but challenges reside in designing transmitting and receiving antenna arrays able to guarantee high-efficiency power transfer and cost-effective deployment in Wireless Power Transfer (WPT) systems. As a result, the design of efficient WPT systems is still an open research field, the importance of which is growing as the possibility to transfer energy by means of electromagnetic waves gathers more and more interest from the application viewpoint such as charging electronic devices in a smart home.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132298675","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}
引用次数: 0
Multiband Antennas with Harmonic Suppression and Improved Bandwidth 谐波抑制和提高带宽的多波段天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539806
B. Chowdhury, A. Eroglu
{"title":"Multiband Antennas with Harmonic Suppression and Improved Bandwidth","authors":"B. Chowdhury, A. Eroglu","doi":"10.1109/APWC52648.2021.9539806","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539806","url":null,"abstract":"Microstrip patch antennas have gained dominance in new technology applications because of their unique features. Although patch antennas have many advantages, they display some limitations in their responses for high frequency applications [1] . One of these drawbacks is their narrow bandwidth due to resonant characteristics. Various techniques have been proposed by researchers to improve microstrip patch antennas’ bandwidth [2] - [4] . Microstrip patch antennas also suffer from harmonic radiation. It deteriorates the efficiency of the systems. Several solution methods have been reported by the researchers to overcome this problem [5] - [7] . Most of the proposed solution method make antenna structures complicated. One of the practical methods to suppress harmonic radiation and enhanced bandwidth is reported in [8] .","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115685705","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}
引用次数: 3
Aerospace Radio Frequency Propagation Tool 航空航天无线电频率传播工具
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539833
Brandon R. Yee, Hubert Chew, Lan Xu, Evangelos Petsalis
{"title":"Aerospace Radio Frequency Propagation Tool","authors":"Brandon R. Yee, Hubert Chew, Lan Xu, Evangelos Petsalis","doi":"10.1109/apwc52648.2021.9539833","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539833","url":null,"abstract":"To assess accurately the radio frequency (RF) interference between operational satellite tracking stations and commercial wireless stations (current or future cell towers), validated and accurate RF path loss estimates are needed. The Aerospace Radio Frequency Propagation Tool (ARPT) provides validated long-distance RF path loss predictions.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123881087","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}
引用次数: 0
A New Circuit-Based EBG Design Technique for the Isolation Improvement between Monopole Antennas 一种新的基于电路的单极天线隔离设计技术
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539583
Ahmed S. Arman, Terry R. Vogler, Mohammod Ali
{"title":"A New Circuit-Based EBG Design Technique for the Isolation Improvement between Monopole Antennas","authors":"Ahmed S. Arman, Terry R. Vogler, Mohammod Ali","doi":"10.1109/APWC52648.2021.9539583","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539583","url":null,"abstract":"A circuit-based EBG design technique to improve the isolation between monopole antennas is proposed for multicolumn mushroom EBGs. The design model is developed by estimating the effective reduction needed in the electrical dimensions of the EBG patches. This is achieved by comparing circuit-based simulation results with HFSS simulation results. For many different patch widths, substrate thicknesses, substrate dielectric constants and frequencies (1, 2.4, and 5.1 GHz) it is found that the effective electrical widths of the patches on the edge columns need to be reduced by 10-25% while those on the middle column need to be reduced by 20-40% in order to obtain a representative isolation vs frequency response using the proposed circuit-based model.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"601 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116327268","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}
引用次数: 0
Same-Frequency Simultaneous Transmit and Receive for Full-Duplex Applications 全双工应用的同频率同步发送和接收
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539591
E. Ackerman, C. Cox
{"title":"Same-Frequency Simultaneous Transmit and Receive for Full-Duplex Applications","authors":"E. Ackerman, C. Cox","doi":"10.1109/APWC52648.2021.9539591","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539591","url":null,"abstract":"Broadband radio-frequency (RF) communications systems need to transmit and receive signals simultaneously, a capability called full duplex. To date, most full duplex systems leverage components that route signals at a bi-directional port to/from either one RF port or a second RF port based on the frequency bands of the signals. The components designed to achieve such signal routing are known, appropriately enough, as duplexers.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122590661","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}
引用次数: 0
Reconfigurable Inverted-F Antenna for MIMO Cellular User Equipment 用于MIMO蜂窝用户设备的可重构倒f天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539733
Oguzhan Oezdamar, R. Weigel, A. Hagelauer, Kun Wang, V. Solomko
{"title":"Reconfigurable Inverted-F Antenna for MIMO Cellular User Equipment","authors":"Oguzhan Oezdamar, R. Weigel, A. Hagelauer, Kun Wang, V. Solomko","doi":"10.1109/APWC52648.2021.9539733","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539733","url":null,"abstract":"MIMO (multiple input multiple output) systems are utilized more and more in modern handheld cellular devices. Because of the limited space, the mutual coupling effect between the antennas increases significantly. In order to reduce the coupling between antennas various decoupling and matching networks are implemented. In this work, a concept for reconfigurable inverted-F antenna for MIMO RF frontends in cellular user terminals is proposed. The main component of the system is the RF switch-based IC (integrated circuit), which was manufactured in Infineon 130 nm RF switch technology. The chip reconfigures the physical length of the inverted-F antenna (IFA), making the antenna longer for low-band operation and splitting the antenna in two IFAs for middle/ high band MIMO operation. The proposed concept implements MIMO approach with 19 dB isolation between the antennas at 1.8 GHz while sustaining good efficiency at 900 MHz.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131675143","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}
引用次数: 0
Analysis of dispersion of wave propagation in urban street canyons via the modal expansion approach 用模态展开法分析城市街道峡谷中波浪传播的频散
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539787
A. Di Simone, G. Franceschetti, A. Iodice
{"title":"Analysis of dispersion of wave propagation in urban street canyons via the modal expansion approach","authors":"A. Di Simone, G. Franceschetti, A. Iodice","doi":"10.1109/APWC52648.2021.9539787","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539787","url":null,"abstract":"For the design of next-generation wireless communication systems (5G microcells, wireless sensor networks, device-to-device systems) in built-up areas, a key role is played by the peculiar propagation conditions within urban street canyons which determine a guiding effect of the transmitted electromagnetic (EM) signal.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131872311","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}
引用次数: 0
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