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A Hybrid Chessboard Polarization Conversion Metasurface for Wideband RCS Reduction 一种用于宽带RCS降低的混合棋盘偏振转换超表面
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372731
Zheng Chen, Meie Chen
{"title":"A Hybrid Chessboard Polarization Conversion Metasurface for Wideband RCS Reduction","authors":"Zheng Chen, Meie Chen","doi":"10.1109/CSRSWTC50769.2020.9372731","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372731","url":null,"abstract":"A novel polarization conversion metasurface (PCM) is proposed to reduce the radar cross section (RCS). Two units with the same structure but different structure parameters are chosen. They have 180°±30° reflection phase differences. These two units and their mirror units are used to form a hybrid chessboard polarization metasurface (HPCM). Not only are the cross-polarization between the units and their mirror units cancelled, but the co-polarization between different units are also cancelled. The radar cross section reduction (RCSR) of 10 dB can be achieved in the 21.2GHz-33.9GHz frequency band. The designed metasurface can provide an efficient way to reduce the scattering of the electromagnetic waves in bandwidth.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132208287","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
Trajectory Planning of UAV with Real-Time Video Transmission Based on Genetic Algorithm 基于遗传算法的无人机实时视频传输轨迹规划
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372522
Yang Guo, Youjia Chen, Jingsong Hu, Haifeng Zheng
{"title":"Trajectory Planning of UAV with Real-Time Video Transmission Based on Genetic Algorithm","authors":"Yang Guo, Youjia Chen, Jingsong Hu, Haifeng Zheng","doi":"10.1109/CSRSWTC50769.2020.9372522","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372522","url":null,"abstract":"In recent years, unmanned aerial vehicles (UAVs) have been widely utilized in many scenarios of wireless communications due to their advantages of high mobility and good signal propagation environment. In this paper, the UAV is used to patrol and inspect the facilities located in outfields and hard to touch by human, and the captured real-time video is transmitted to the grounded control center. Due to the energy constraint of the UAV, a trajectory planning problem is formulated to minimize all flight distance to complete the inspection task, which jointly considers the requirements of the wireless video transmission. We transform this optimization problem to an minimum energy consumption problem, and use genetic algorithm to implement the trajectory planning. The simulation results show the good performance in this case. .","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134330708","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
Polarization Conversion Metasurface with Reconfigurable Performance 具有可重构性能的偏振转换超表面
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372567
Mingzhao Wang, He-xiu Xu, Shaojie Wang, Yanzhao Wang, Chaohui Wang
{"title":"Polarization Conversion Metasurface with Reconfigurable Performance","authors":"Mingzhao Wang, He-xiu Xu, Shaojie Wang, Yanzhao Wang, Chaohui Wang","doi":"10.1109/CSRSWTC50769.2020.9372567","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372567","url":null,"abstract":"Achieving polarization conversion of electromagnetic (EM) waves with adjustability is essential for practical applications. Traditional reconfigurable metasurfaces are typically based on electric circuit which always require complicated biasing circuit. Here, we proposed a scheme that is capable of polarization conversion with shifted operating frequencies by adjusting the angle ß of the origami mechanically. To verify the feasibility of our design, we have designed an asymmetric meta-atom with a circular ring on the left and a square ring on the right, which can achieve dual-band polarization conversion. Numerical results show that dual polarization-conversion bands can be shifted from 4.2 and 6.3 GHz at ß=100 to 4.8 and 7.7 GHz at ß=800. By tuning ß within 10°~80°, the operation frequencies can be shifted continuously between above frequency interval. The maximum polarization conversion efficiency is more than 90% in both bands and occurs when ß=45°. When ß=100, the conversion efficiency reaches 9% and 5%. When ß=100, the conversion efficiency reaches 5% and 40%. Regulation range can reach more than 13%. Our mechanical tuning concept is flexible, easy to control and free of complicated biasing circuit, and thus it has potential applications in real-world.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133098268","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 Low Cost Optically Transparent and Frequency-Reconfigurable Seawater Antenna 一种低成本光透明、频率可重构的海水天线
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372613
Jinxin Li, C. Yin, Pei Xiao, Jun Dong
{"title":"A Low Cost Optically Transparent and Frequency-Reconfigurable Seawater Antenna","authors":"Jinxin Li, C. Yin, Pei Xiao, Jun Dong","doi":"10.1109/CSRSWTC50769.2020.9372613","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372613","url":null,"abstract":"A low cost optically transparent and frequency-reconfigurable water antenna is proposed in this paper. The proposed water antenna is mainly made of plexiglass (εr = 3.4) and seawater. Thus, the most distinctive feature of this water antenna is that its whole structure is almost completely optically transparent and its cost is very low. Another attractive feature of the proposed antenna is that it can achieve frequency reconfiguration. The water ground is divided into four sections, in which four work states are realized by injecting seawater into different section. Simulation results show that impedance bandwidth for| S11| < -10 dB under four different states is stable at about 22% and the tuning range is from 1.46GHz to 1.64GHz. Besides, radiation patterns and efficiency are able to maintain stability even if at different work states. Due to these features such as high optical transparency, low cost and excellent frequency reconfiguration, the proposed water antenna is very suitable for the integration of various solar cells and solar panel.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125706158","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
Optimized Design of Multilayer Absorber for Human Tissue Surface 人体组织表面多层吸收剂的优化设计
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372636
Yuejin Zhang, Meng-Qiu Ye, Fei Du, Juan Wang, Jin-Feng Li, Aiyun Zhan
{"title":"Optimized Design of Multilayer Absorber for Human Tissue Surface","authors":"Yuejin Zhang, Meng-Qiu Ye, Fei Du, Juan Wang, Jin-Feng Li, Aiyun Zhan","doi":"10.1109/CSRSWTC50769.2020.9372636","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372636","url":null,"abstract":"This paper has designed a surface for human tissues of multi-layer absorber and optimized design it. In the optimization scheme of the multilayer wave-absorbing structure, graphite is used as the main wave-absorbing to calculate its electromagnetic parameters under different concentrations, and its reflection coefficient is obtained using the equivalent transmission line theory. By establishing the objective function of the reflection coefficient Γ and Genetic algorithm, on the basis of ensuring the basic functional requirements of the absorber, optimize the design of the thickness, material and concentration of each layer of the multi-layer absorber, on the basis of expanding the absorption band as much as possible, reduce the reflectivity.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124792540","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 Broadband Millimeter-Wave Vertically-Integrated Vivaldi Antenna and Its Circularly Polarized Array 宽带毫米波垂直集成维瓦尔第天线及其圆极化阵列
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/csrswtc50769.2020.9372467
Chuanming Zhu, Guanghui Xu, Jie Wu, Hui Xu, Li-Xia Yang, Zhixiang Huang
{"title":"A Broadband Millimeter-Wave Vertically-Integrated Vivaldi Antenna and Its Circularly Polarized Array","authors":"Chuanming Zhu, Guanghui Xu, Jie Wu, Hui Xu, Li-Xia Yang, Zhixiang Huang","doi":"10.1109/csrswtc50769.2020.9372467","DOIUrl":"https://doi.org/10.1109/csrswtc50769.2020.9372467","url":null,"abstract":"A novel broadband millimeter-wave(mm-Wave) vertically-integrated Vivaldi antenna with stable gain and good radiation patterns is presented in this paper. The proposed antenna element consists of five substrates. There are two symmetrical metal radiation strips on the top of each substrate. The two adjacent stripes are connected through the metallized via. A coupling-slot on the substrate integrated waveguide(SIW) is employed as the feeding structure to these strips. Simulations show that the antenna can have a wider impedance bandwidth of 28%, and a higher gain of 8 dBi. In addition, based on this antenna element, a 2×2 circularly polarized(CP) antenna array is designed to demonstrate that the proposed antenna is a promising candidate for the mm-Wave CP applications. The 2×2 array exhibits an impedance bandwidth of 16.8% and axial ratio(AR) bandwidth of 16.6% with the good right-hand CP radiation patterns.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124858370","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
Geometric Phase Based Diffuse Scattering Metasurface with High-efficient Transmission Window 具有高效透射窗的几何相位漫射超表面
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372505
Yingjie Wang, X. Xie, Fang-kun Zhou, Ping Chen
{"title":"Geometric Phase Based Diffuse Scattering Metasurface with High-efficient Transmission Window","authors":"Yingjie Wang, X. Xie, Fang-kun Zhou, Ping Chen","doi":"10.1109/CSRSWTC50769.2020.9372505","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372505","url":null,"abstract":"In this paper, a geometric phase based diffuse scattering metasurface with a high-efficient transmission window is proposed and demonstrated. Meta-atom of this metasurface consists of scattering cancellation layer, dielectric spacer layer and band-pass frequency selective surface (FSS) layer. The binary elements of the metamaterial are meta-atom and its copy rotated by 90° inclined angle. Full-wave electromagnetic simulation indicated that 10 dB RCS reduction band is from 6.4 GHz to 11.3 GHz while the transmission band is 15.1 GHz with 0.3 dB insertion loss. Sample of this metamaterial was fabricated and measured to validate the simulation results.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"421 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132523871","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
Development of High-Performance, Long-Life and High-Reliability Microwave Amplifier for Satellite Application 卫星用高性能、长寿命、高可靠性微波放大器的研制
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372556
Yong-feng Gui, De-zhi Ding, Lai-fu Jin, Gai-Qing Chen, Jun Ma, Yongqing Zou
{"title":"Development of High-Performance, Long-Life and High-Reliability Microwave Amplifier for Satellite Application","authors":"Yong-feng Gui, De-zhi Ding, Lai-fu Jin, Gai-Qing Chen, Jun Ma, Yongqing Zou","doi":"10.1109/CSRSWTC50769.2020.9372556","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372556","url":null,"abstract":"As the key electronic device of a new generation of long-life and high-reliable satellite payload system, a satellite-borne S-band microwave amplifier was designed in this paper. By resolving key techniques of the high-reliability architecture design technique, the protecting circuit design technique of large dynamic input overload protection, power supply and radio frequency channel safety, the microwave circuit design of anti-self-excited oscillation and anti-cavity-effect, electro-magnetic compatibility and other stability design techniques, high-efficiency heat dissipation technique. A microwave amplifier with test results of gain fluctuation ≤0.081dB, Voltage Standing Wave Ra-tio(VSWR)≤1.27, and amplitude consistency between channel ≤ ± 0.075dB was obtained, which can still work normally under 20dB excitation overload, 90~110V voltage bias, and 3:1 VSWR. The power supply unit has the functions of input overcurrent protection, output overcurrent protection, output overvoltage protection and so on. The reliability degree at the end of 12 years is better than 0.998. According to test results, the amplifier achieved high performance, long life and high reliability. During original stage and flight model stage, no significant quality and technical problems were detected. The performance of the amplifier is normal and stable on orbit.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133880967","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
Calculation of Dyadic Green's Function in the RBFNN-Based Layered Media 基于rbfnn的分层介质中并矢格林函数的计算
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/csrswtc50769.2020.9372543
Xiaobing Han, Runrun Ren, Bingyang Liang, Yuanguo Zhou
{"title":"Calculation of Dyadic Green's Function in the RBFNN-Based Layered Media","authors":"Xiaobing Han, Runrun Ren, Bingyang Liang, Yuanguo Zhou","doi":"10.1109/csrswtc50769.2020.9372543","DOIUrl":"https://doi.org/10.1109/csrswtc50769.2020.9372543","url":null,"abstract":"The Dyadic Green's function, in general, is comprised of spectral Dyadic Green's functions and Sommerfeld integral. Since the integral featuring high-frequency oscillation and slow decay may lead to a time-consuming calculation process. With optimal approximation and global optimum characteristics that cannot be found in other feedforward neural networks, the RBF neural network is adopted in this paper to solve the dyadic Green function. By doing so, the efficiency of solving Dyadic Green's functions can be enhanced thanks to its simple structure and fast training speed. According to the numerical results, the calculation scheme proposed in this paper is proved to be feasible.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133144115","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 True Polarization-Independence Metasurface for Wideband RCS Reduction 用于宽带RCS减小的真正极化无关的元表面
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC) Pub Date : 2020-12-13 DOI: 10.1109/CSRSWTC50769.2020.9372446
Guoxiang Dong, Xiaoping Li, Yanming Liu, A. Zhang, Song Xia, Zhuo Xu
{"title":"A True Polarization-Independence Metasurface for Wideband RCS Reduction","authors":"Guoxiang Dong, Xiaoping Li, Yanming Liu, A. Zhang, Song Xia, Zhuo Xu","doi":"10.1109/CSRSWTC50769.2020.9372446","DOIUrl":"https://doi.org/10.1109/CSRSWTC50769.2020.9372446","url":null,"abstract":"In this work, the design of non-periodic multiple types of units makes wideband random phase gradients form on a designed metasurface. Because these random phase gradients, the incidence waves are diffused, which results in RCS reduction. Importantly, under both linearly polarized (LP) and circularly polarized (CP) incident waves, these random phase gradients are always available on the metasurface, and they are not sensitive to the polarization state for either CP waves or LP waves. When the incident angle of LP and CP waves is increased, these random phase gradients are also available on the metasurface. Therefore, a true polarization-independence metasurface is realized for wideband and wide-angle RCS reduction. For both LP and CP incident wave, −10 dB RCS reduction bands are from 13.5GHz to 22 GHz. Simulation and experiment results all show this proposed metasurface has potential application for stealth technology.","PeriodicalId":207010,"journal":{"name":"2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133120654","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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