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2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)最新文献

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Groove Gap Waveguide Leaky Wave Antenna with Fixed Frequency and Beam Scanning 固定频率波束扫描槽隙波导漏波天线
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752814
K. Zhao, Bang Wei, Zheng Li, Junhong Wang
{"title":"Groove Gap Waveguide Leaky Wave Antenna with Fixed Frequency and Beam Scanning","authors":"K. Zhao, Bang Wei, Zheng Li, Junhong Wang","doi":"10.1109/isape54070.2021.9752814","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752814","url":null,"abstract":"In this paper, a fixed-frequency beam-scanning leaky wave antenna (LWA) based on groove gap waveguide (GGW) technology is presented. The whole structure can be divided into GGW and radiating units. The radiating units are composed of 67 slot-coupled patch antennas, and the working state of each patch antenna is controlled by a PIN diode. A periodic reconfigurable method is adopted to realize the fixed frequency beam scanning characteristics of the antenna. Through full-wave simulation, it is found that the proposed GGW L W A can achieve beam scanning of -21 °~29° at 22 GHz.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116064763","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
Antenna Design of Millimeter Wave Radar for Smart Toilet 智能马桶毫米波雷达天线设计
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752979
Yang Yang, Lidong Chi, Yunlong Luo, Alex Qi, Miao Miao, Y. Qi
{"title":"Antenna Design of Millimeter Wave Radar for Smart Toilet","authors":"Yang Yang, Lidong Chi, Yunlong Luo, Alex Qi, Miao Miao, Y. Qi","doi":"10.1109/isape54070.2021.9752979","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752979","url":null,"abstract":"Presence detection, seating detection, and water level detection in smart toilets have received widespread attentions. This paper uses a low-cost, simple structured 24G millimeter-wave radar with one transmitter and two receivers to achieve these functions. Presence detection and seating detection require the antenna to radiate signals forward, while water level detection requires the antenna to radiate signals vertically down to the water surface. This paper proposes a new bidirectional radiating antenna of millimeter-wave radar. The transmitting antenna is a hybrid end-fire and broadside radiating antenna, composed of the Vivaldi antenna and the wideband high efficiency electromagnetic structure (WHEMS) antenna. The hybrid end-fire radiating antenna is used for presence detection and seating detection, and broadside radiating antenna is used for water level detection. With advantages of the antenna, we have achieved accurate tracking of toilet users, and the water level measurement accuracy can reach ±2 mm.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122617592","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
Vortex Splitting of the Bessel-Gaussian Beam in Atmospheric Turbulence 大气湍流中贝塞尔-高斯光束的涡旋分裂
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753208
Kangjun Dong, Bowen Tao, Wenjie Jiang, Mingjian Cheng, Linxin Guo
{"title":"Vortex Splitting of the Bessel-Gaussian Beam in Atmospheric Turbulence","authors":"Kangjun Dong, Bowen Tao, Wenjie Jiang, Mingjian Cheng, Linxin Guo","doi":"10.1109/isape54070.2021.9753208","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753208","url":null,"abstract":"Based on multi-phase screen method, an atmospheric turbulence transmission link of 1500 meters can be decomposed sufficiently into a series of 150 weak thin turbulence phase screens with the same interval, and the transmission model of orbital angular moment (OAM) mode carried by a Bessel Gaussian beam in atmospheric turbulence was developed and employed to analyze the turbulence induced vortex splitting of OAM modes. OAM modes with different topological charges have different vortex splitting velocity in the atmospheric turbulence, it can be enhanced with the increase in Reynolds number.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633014","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
Parabolic-equation based study of atmospheric turbulent effects on evaporation duct radio wave propagation 基于抛物方程的大气湍流对蒸发管道无线电波传播影响的研究
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752884
Xiangming Guo, Yusheng Zhang, Qingliang Li, Shifeng Kang
{"title":"Parabolic-equation based study of atmospheric turbulent effects on evaporation duct radio wave propagation","authors":"Xiangming Guo, Yusheng Zhang, Qingliang Li, Shifeng Kang","doi":"10.1109/isape54070.2021.9752884","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752884","url":null,"abstract":"Evaporation duct is an imporatn factor affecting the near sea surface radio wave propgation. Based on the atmospheric boundary turbulence theory and the parabolic wave equation, the propagation model considing the randomized refractivity is proposed. The numerical simulation compared the influence of theturbulence the results shaows that accounting for the physical mechanism of the atmosphere turbulence is s an important factor. It can reduce the propagation distance of radar wave propagation and affect the detection probability and range of radar to the tarbet beyond the horizon.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114257035","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
3-D Hybrid Finite-Difference Time-Domain (FDTD)/ Wave Equation Finite Element Time-Domain (WE-FETD) Method 三维时域有限差分(FDTD)/波动方程时域有限元(WE-FETD)混合方法
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753583
Jiaxuan Wang, Qiang Ren, Fei Dai
{"title":"3-D Hybrid Finite-Difference Time-Domain (FDTD)/ Wave Equation Finite Element Time-Domain (WE-FETD) Method","authors":"Jiaxuan Wang, Qiang Ren, Fei Dai","doi":"10.1109/isape54070.2021.9753583","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753583","url":null,"abstract":"In this paper, a new 3-D hybrid finite-difference time-domain (FDTD)/wave equation finite element time-domain (WE-FETD) method is proposed. Different from previous methods using first order Maxwell's curl equations, the FETD region in this method is wave-equation-based. The method forms a new hybrid FDTD/SETD/FETD framework. At the interface of different region, it employs the Discontinuous Galerkin method to couple the neighboring regions.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121883345","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
Research on the Electromagnetic Scattering Characteristics of Wingtip Vortices 翼尖涡的电磁散射特性研究
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9753519
Jiawei Ye, S. Gong, Senshan Song
{"title":"Research on the Electromagnetic Scattering Characteristics of Wingtip Vortices","authors":"Jiawei Ye, S. Gong, Senshan Song","doi":"10.1109/ISAPE54070.2021.9753519","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9753519","url":null,"abstract":"The detection of aircraft wingtip vortices has always been a key issue for aviation safety and aircraft stealth. Previous work mostly used density variation and water vapor variation to calculate dielectric parameters and the distribution of radar cross section(RCS). Here, the atmospheric pressure variation around the aircraft are calculated and simulated using Ansys Fluent software and numerical models such as fluid mechanics N-S equation. To investigate the change of its scattering cross section, we calculated the fluctuations of the dielectric parameters around aircraft for the given data of atmospheric pressure fluctuations. Finally, we show the relation between RCS and radar receiving horizontal angle under three incident wave angles, and the change rule of RCS and receiving angle both in the horizontal polarization and vertical polarization cases. This conclusion has a positive effect on the study of the scattering characteristics of wingtip vortices.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117086325","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 Wideband Dual-Polarized Crossed Dipole for Wireless Communication System 用于无线通信系统的宽带双极化交叉偶极子
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9753525
Ziting Li, Chuo Yang, Yuheng Tian, Haosheng Deng, Xiao-fei Wang
{"title":"A Wideband Dual-Polarized Crossed Dipole for Wireless Communication System","authors":"Ziting Li, Chuo Yang, Yuheng Tian, Haosheng Deng, Xiao-fei Wang","doi":"10.1109/ISAPE54070.2021.9753525","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9753525","url":null,"abstract":"In this paper, a wideband dual-polarized crossed dipole with simple structure is presented. The radiation element of the proposed antenna is composed of two orthogonal patch dipoles to realise a wideband operation. A metallic reflector is used to achieve the unidirectional radiation. To further improve the antenna bandwidth, an air layer is introduced. A simple feed network. is used to convert unbalanced feed to balanced feed. The results indicate that the prototype has a good performance within the frequency band from 8GHz to 12GHz for return loss ≥ 10dB. The proposed antenna has certain application prospects in wireless communication, radar and other fields.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129817523","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
Hybrid precoding in Massive Antenna Multi-User System with Modified Hybrid Connected Structure 改进混合连接结构的大天线多用户系统混合预编码
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9753035
Yao Liu, Yu Zhang, Xiaoqing Wang, Xiongwen Zhao, S. Geng
{"title":"Hybrid precoding in Massive Antenna Multi-User System with Modified Hybrid Connected Structure","authors":"Yao Liu, Yu Zhang, Xiaoqing Wang, Xiongwen Zhao, S. Geng","doi":"10.1109/ISAPE54070.2021.9753035","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9753035","url":null,"abstract":"In this paper, a new hybrid precoding architecture is proposed for massive antenna multi-user system. The proposed architecture is an extension of the hybrid connected structure (HCS), which can realize a good tradeoff between spectral efficiency and hardware cost by adjusting the number of sub-arrays. Based on the proposed architecture, the hybrid precoding matrix is optimized by using the alternating optimization (AO) and Riemannian conjugate gradient (RCG) algorithm. The proposed scheme is evaluated based on real measured channels at 28GHz in a railway station. Simulation results show that the achievable sum rate of proposed scheme is very close to that of the optimal full-digital precoding scheme. In addition, the achievable sum rate of the proposed scheme is higher than that of the existing schemes when the number of sub-arrays takes different values.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129822070","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
Pattern Correction of Impaired Antenna Array Based on Mixed Integer Programming 基于混合整数规划的受损天线阵方向图校正
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753514
Guo Bai, Yuanzhi Liu, C. Liao, Yuping Shang
{"title":"Pattern Correction of Impaired Antenna Array Based on Mixed Integer Programming","authors":"Guo Bai, Yuanzhi Liu, C. Liao, Yuping Shang","doi":"10.1109/isape54070.2021.9753514","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753514","url":null,"abstract":"The impairment of active antenna arrays will lead to the deterioration of their radiation patterns. In this paper, a method based on mixed integer programming (MIP) is proposed to correct patterns of impaired linear antenna arrays. The proposed method uses a fast branch and bound (B&B) process to achieve the low sidelobe pattern correction while the minimization of the number of corrected elements is maintained. Compared with the existing pattern correction techniques, the proposed method exhibits the more superior performance in terms of pattern consistency and number of corrected elements.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129070988","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
A Frequency Reconfigurable Band-pass Filter Based on Microstrip Open-Loop Hole Resonator 一种基于微带开环孔谐振器的频率可重构带通滤波器
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752694
Xue Mao, Winjin Liu, J. Nan, Chao Liu
{"title":"A Frequency Reconfigurable Band-pass Filter Based on Microstrip Open-Loop Hole Resonator","authors":"Xue Mao, Winjin Liu, J. Nan, Chao Liu","doi":"10.1109/isape54070.2021.9752694","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752694","url":null,"abstract":"Design of a microstrip bandpass filter (BPF) with frequency reconfigurability is presented in this paper. The designed filter is constructed by using dual-mode open-loop hole resonator (DOHR). Varactor diodes are used as tuning elements in order to adjust center frequency. The achieved results indicate a center frequency tuning range of 2.04~2.5GHz, which can be used for LTE, CDMA, WLAN, etc.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124110971","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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