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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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Investigation of MIMO Channel Capacity Using Stochastic and Ray-Tracing Techniques for Wi-Fi 6 Applications 基于随机和射线追踪技术的Wi-Fi 6 MIMO信道容量研究
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539667
Sulaiman Tariq, H. Al‐Rizzo
{"title":"Investigation of MIMO Channel Capacity Using Stochastic and Ray-Tracing Techniques for Wi-Fi 6 Applications","authors":"Sulaiman Tariq, H. Al‐Rizzo","doi":"10.1109/apwc52648.2021.9539667","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539667","url":null,"abstract":"Many researchers tend to evaluate the performance of their state-of-the-art MIMO antenna array designs using either stochastic or ray-tracing channel modeling tools. These channel models are mainly categorized into deterministic and stochastics channel models. In this paper, we investigate these two categories in terms of the MIMO channel capacity and evaluate the performance of a miniaturized MIMO antenna array in an indoor offices scenario. The effects of the number of transmitters and receivers, spatial location, 3D radiation patterns, polarization, and S-parameters are evaluated for an indoor office model and the IEEE TGn-B indoor stochastic channel model. The ray-tracing software, Wireless InSite, is used as the deterministic channel modeling tool while MIMObit is used as the stochastic channel modeling tool.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"14 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":"116919848","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 simplified expression on the radiation characteristics of small spherical helix antennas 小型球形螺旋天线辐射特性的简化表达式
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539834
Keisuke Fujita
{"title":"A simplified expression on the radiation characteristics of small spherical helix antennas","authors":"Keisuke Fujita","doi":"10.1109/APWC52648.2021.9539834","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539834","url":null,"abstract":"Radiation characteristics including the radiation efficiency have been obtained for small spherical surface antennas by using the spherical wave expansion. Analytical expressions of the radiation efficiency revealed its theoretical limit [1] . Spherical helix antennas are proposed to approach the upper bound of the radiation efficiency. This antenna is composed of helical wires whose direction is along the optimized surface current of the spherical surface antenna. It is known that the radiation efficiency of a spherical helix antenna is always smaller than that of a spherical surface antenna. A method to predict the reduction of the radiation efficiency remains unclear. Here the radiation efficiency of spherical helix antennas is obtained analytically by modifying a result of the spherical surface antenna.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"21 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":"124118546","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
High Isolation Self-Interference Cancelation for Monostatic Simultaneous Transmit and Receive System 单站同步收发系统的高隔离自干扰消除
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539666
M. N. Tarek, M. Roman, E. Alwan
{"title":"High Isolation Self-Interference Cancelation for Monostatic Simultaneous Transmit and Receive System","authors":"M. N. Tarek, M. Roman, E. Alwan","doi":"10.1109/APWC52648.2021.9539666","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539666","url":null,"abstract":"Wireless technology is growing at a fast rate to accommodate the expanding user demands. Currently, the radio frequency (RF) spectrum is overcrowded, hence more susceptible to signal fratricide and interference. To enhance spectrum access, in-band full duplex systems are implemented to achieve simultaneous transmission and reception (STAR) and doubleand double the spectral efficiency. However, STAR systems require suppression of the high power transmit signals that can leak to the receiver chain. It is observed that the interference signal imposed on the receiver by the transmitter is approximately 60–90 dB stronger than the desired received signal. This type of self-interference (SI) can significantly reduce the receiver’s dynamic range and often leads to its desensitization. Therefore, successful STAR implementation requires considerable isolation between the transmitter and receiver to reduce the SI signal.","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":"129769101","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: 1
MmWave Full-Duplex Wireless Communication: TX-RX Self-Interference Reduction Through Passive Cancellation Techniques 毫米波全双工无线通信:通过无源对消技术降低TX-RX自干扰
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539579
A. Oladeinde, Ehsan Aryafar, B. Pejcinovic
{"title":"MmWave Full-Duplex Wireless Communication: TX-RX Self-Interference Reduction Through Passive Cancellation Techniques","authors":"A. Oladeinde, Ehsan Aryafar, B. Pejcinovic","doi":"10.1109/APWC52648.2021.9539579","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539579","url":null,"abstract":"Full-duplex (FD) wireless has recently emerged as a new technology that enables a wireless device to transmit and receive at the same time and on the same frequency band. Recent works have shown that it is possible to significantly reduce the self-interference (SI) and build small-antenna low-frequency (sub-6 GHz) FD radios.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"4 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":"132406741","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
Shared Aperture Simultaneous Transmit and Receive Architecture for Reflectarray Antennas 反射天线的共享孔径同步收发结构
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539530
A. Samaiyar, M. Elmansouri, D. Filipović
{"title":"Shared Aperture Simultaneous Transmit and Receive Architecture for Reflectarray Antennas","authors":"A. Samaiyar, M. Elmansouri, D. Filipović","doi":"10.1109/apwc52648.2021.9539530","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539530","url":null,"abstract":"A reflectarray aperture is a planar surface that mimics the parabolic reflector by using a doubly periodic array of carefully designed scatterers. Reflectarray antennas are rapidly becoming an attractive alternative to the traditional parabolic reflector systems due to the primarily application driven requirements and advantages such as size, weight, deployment mechanism, and cost. The major issue with reflectarrays is; however, their narrowband performance and therefore reduced throughput when used for RF communication purposes. To overcome this drawback, Simultaneous Transmit And Receive (STAR) configurations can be deployed. STAR is a technology that allows reuse of the channel bandwidth in a full duplex communication mode, therefore theoretically doubling the channel throughput and improving the spectral efficiency of the system [1] . Reflectarray STAR configuration is particularly useful is commercial applications like satellite communications, repeaters/signal boosters, and 5G, where high gain antenna is required and the available bandwidth is low because of immense congestion of the electromagnetic spectrum [2] .","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"13 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":"132960594","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: 1
Miniaturized Circular Polarized Antenna with Optimized Multipath Suppression for Indoor Positioning Systems 用于室内定位系统的优化多径抑制小型化圆极化天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539697
C. Roth, M. Schlösser, M. Robens, C. Grewing, I. Flammia, S. van Waasen
{"title":"Miniaturized Circular Polarized Antenna with Optimized Multipath Suppression for Indoor Positioning Systems","authors":"C. Roth, M. Schlösser, M. Robens, C. Grewing, I. Flammia, S. van Waasen","doi":"10.1109/apwc52648.2021.9539697","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539697","url":null,"abstract":"The development of Indoor Positioning Systems (IPS) promises an extension of satellite navigation to indoor scenarios with significantly better spatial and temporal resolution [1] . We have developed a time difference of arrival (TDoA) based IPS approach operating at 5.8 GHz ISM band featuring Frequency Division Multiplexing (FDM) principals with minimized channel offsets of the up to eight base stations placed around the monitoring space. Mobile devices analyze these signals for the position estimation. Due to the high number of scattering objects in indoor scenarios, one major challenge here is the multipath propagation superimposing line of sight signals and thus disturbing the extraction of the TDoA information. Using circular polarized RF signals aims at minimizing this interference by switching the polarization after reflection. This article introduces the antenna developed for the receiving mobile devices. For applications as human motion analysis, the mobile devices have to be small, lightweight and should favor a central reference position to make the device symmetrically rotatable around its center of reception. A circularly polarized annular ring patch antenna fulfills these requirements [2] . The chosen design realizes a matched right-hand circular polarized (RHCP) antenna. Employing a ceramic (Y 2 0 3 partially stabilized Zirconia) with high permittivity ( ε r = 29) leads to considerable minimal dimensions ( Fig. 1a ) in comparison to monopole and other patch antennas [3] . We made use of the EMPro software tool from Keysight to optimize the antenna dimensions and performance by simulation.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"38 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":"133930010","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
Increased Isolation in Single and Multi-Antenna Full Duplex Wideband Radios 增加了单天线和多天线全双工宽带无线电的隔离
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539622
Satheesh Bojja Venkatakrishnan, Alexander Hovsepian, J. Volakis
{"title":"Increased Isolation in Single and Multi-Antenna Full Duplex Wideband Radios","authors":"Satheesh Bojja Venkatakrishnan, Alexander Hovsepian, J. Volakis","doi":"10.1109/APWC52648.2021.9539622","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539622","url":null,"abstract":"To meet the ever-increasing consumer needs, new wireless applications including IOT are being developed at a tremendous pace. However, only a very small percentage of spectrum is available to accommodate these applications. Specifically, wireless applications targeting sub-6 GHz frequency band require efficient hardware infrastructures and protocols to operate in the highly congested spectrum, to avoid signal fratricide. Consequently, there is a strong need to develop spectral efficient full duplex communication techniques [1] .","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":"130341071","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
High Performance Antennas for Early Fire Detection Wireless Sensor Networks at 2.4 GHz 2.4 GHz早期火灾探测无线传感器网络的高性能天线
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539629
T. E. Oliveira, J. Reis, M. Vala, R. Caldeirinha
{"title":"High Performance Antennas for Early Fire Detection Wireless Sensor Networks at 2.4 GHz","authors":"T. E. Oliveira, J. Reis, M. Vala, R. Caldeirinha","doi":"10.1109/APWC52648.2021.9539629","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539629","url":null,"abstract":"In this paper, high performance antennas are pro-posed for massive deployment of wireless sensor networks (WSN) for early fire dectection in forested areas. A differential slotted microstrip patch antenna and a Quasi-Yagi microstrip antenna are proposed to be implemented in a WSN at 2.4 GHz (ISM band). Firstly, a microstrip Quasi-Yagi antenna has been studied and optimised to operate at 2.4 GHz, which is sough to be deployed as part of a sectorized base-station. The antenna is comprised of one reflector and six directors around a microstrip patch to create an end-fire radiation pattern. According to simulations, the optimised antenna reaches a gain of 9.41 dBi and a half-power beamwidth of 70° at 2.44 GHz, with a operating frequency band from 2.27 to 2.83 GHz. For the sensor node, a very small differential slotted microstrip patch antenna is proposed, which has been redesigned and optimised to operate at 2.4 GHz. The proposed design takes advantage of slotted resonant elements in order to reduce the overall size of the antenna. Simulation results ensure a realised gain of 4.15 dBi at 2.44 GHz and an operating frequency band from 2.37 to 2.5 GHz. The results present in this paper were performed by using the simulation software CST-MWS.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"72 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":"127335195","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: 2
Design of Helical Antennas for Full-duplex Communication Systems 全双工通信系统中螺旋天线的设计
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539769
Songyi Yen, D. Filipović
{"title":"Design of Helical Antennas for Full-duplex Communication Systems","authors":"Songyi Yen, D. Filipović","doi":"10.1109/APWC52648.2021.9539769","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539769","url":null,"abstract":"With the continuing progress of RF technologies and capabilities, multifunction is a key paradigm allowing for efficient use of space and low-cost systems. A critical factor to fully take advantage of multifunction is the use of true full-duplex simultaneous transmit and receive (STAR) without any traditional forms of multiplexing (spatial, time, frequency, polarization). An important consideration for true STAR systems is the first layer of transmit (Tx) and receive (Rx) isolation provided by the antenna front-end. These front-ends can be realized in bistatic configurations where the physical separation and/or high-impedance surfaces separating the Tx and Rx antennas provide the necessary isolation [1] ; a more desirable configuration, however, is the so-called quasi-monostatic configuration where the Tx and Rx antennas share the same footprint.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"8 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":"115255197","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
Analog Self-Interference Cancellation Networks for STAR Phased Arrays STAR相控阵的模拟自干扰消除网络
2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539536
J. Doane, K. Kolodziej, B. Perry
{"title":"Analog Self-Interference Cancellation Networks for STAR Phased Arrays","authors":"J. Doane, K. Kolodziej, B. Perry","doi":"10.1109/apwc52648.2021.9539536","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539536","url":null,"abstract":"Theoretical performance of ideal multi-channel analog Self-Interference Cancellation (SIC) networks are considered for Simultaneous Transmit and Receive (STAR) phased array applications. Three different matching criteria are described for designing analog SIC networks, two of which may be implemented using a single cancellation path per element. Simulated results are presented comparing the performance of each SIC type under finite dynamic range limitations.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"16 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":"122564316","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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