Qihua Wu, Tiehua Zhao, Xiaobin Liu, F. Zhao, Xiaofeng Ai, S. Xiao
{"title":"SAR Echo Cancellation Using Azimuth Interrupted Sampling Modulation","authors":"Qihua Wu, Tiehua Zhao, Xiaobin Liu, F. Zhao, Xiaofeng Ai, S. Xiao","doi":"10.1109/ACES-China56081.2022.10065011","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065011","url":null,"abstract":"Echo cancellation is an ingenious method that protects the target of interest (TOI) by cancelling target echo at radar receiver with an active source. In this paper, a synthetic aperture radar (SAR) echo cancellation method using azimuth interrupted sampling modulation is proposed. The proposed method can not only cancel the target echo, but also generate false targets along the azimuth direction, which will protect the TOI more efficiently. Measured SAR data simulations demonstrate the effectiveness of the proposed method.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122640331","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}
{"title":"Calculation of the Transmission-Reflection Coefficients of Composite Periodic Structures Using Characteristic Mode Theory","authors":"Chong Guo, Y. Jiao","doi":"10.1109/ACES-China56081.2022.10064833","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10064833","url":null,"abstract":"In this paper, the calculation of transmission-reflection (T-R) coefficients of composite periodic structures is discussed based on characteristic mode theory (CMT). The single-mode structures are studied and numerical results show that the T-R coefficients calculated from CMT well coincide with those obtained from Floquet mode theory. The CMT provides us with a new perspective to understand the field behaviors of periodic structures.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133573916","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}
{"title":"Dual-Frequency Vortex Beam Generation Using Coding Metasurface","authors":"Junfeng Li, Xianglin Kong, Fengjun Wang, Zhuo-Wei Miao, Xiaoyi Wang, Xiaopeng Shen, Shengjun Zhang, Lei Zhao","doi":"10.1109/ACES-China56081.2022.10065128","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065128","url":null,"abstract":"This paper presents a dual-frequency coding metasurface (CM) for vortex beam generation. The metasurface unit cell is realized with two symmetric metal layers separated by a dielectric substrate. Each metal layer consists of an outer square ring, a middle square ring, and an inner rhombus patch. Two out-of-phase transmitting states in two bands are achieved by rotating the inner rhombus patch by 90 °. Two 1 = + 2 vortex beams are then realized in two different bands by properly distributing the two states on the metasurface aperture. A metasurface with $30 times 30$ elements is designed, simulated, and experimentally demonstrated. The experimental results agree well with the simulating ones, showing that the metasurface achieves a high transforming efficiency in both Ku (13.6-14.8GHz) band and Ka (26.7-27.7 GHz) band.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"939 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127001658","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}
{"title":"Measurement Uncertainty Analysis of Measurement Grid Reduction for 5G IoT OTA Testing","authors":"Xiaochen Chen, Xianhui Liu, Lei Chen","doi":"10.1109/ACES-China56081.2022.10064988","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10064988","url":null,"abstract":"For Over-the-air (OTA) testing of 5G Internet of Things (IoT) devices, test time reduction is of great significance. Among all potential methods, measurement grid reduction is a more direct one. This paper evaluates the effect of different measurement grid configuration on OTA performance of IoT devices. The determination of associated measurement uncertainty (MU) term is proposed and analyzed based on statistical distribution simulation. Finally, it can be observed that reduction of measurement grid resolution from current 30/30 (Δθ/ɸΔ) to 45/36 (Δθ/ɸΔ) could achieve a roughly 50% grid point reduction while requiring an uncertainty relaxation of less than 0.2 dB, which is considered to be acceptable for OTA testing of IoT devices.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127587697","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}
Lei Xiang, F. Wu, Chao Yu, Zhihao Jiang, Guangwen Jin, Yu Yao, W. Hong
{"title":"A Wideband Differentially-Driven Dual-Polarized Antenna for 5G mmWave Terminal Application","authors":"Lei Xiang, F. Wu, Chao Yu, Zhihao Jiang, Guangwen Jin, Yu Yao, W. Hong","doi":"10.1109/ACES-China56081.2022.10064844","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10064844","url":null,"abstract":"A wideband differentially-driven dual-polarized magneto-electric (ME) dipole antenna suitable for 5G mmWave terminal application is presented in this paper. A cross-shaped strip differential feeding structure is designed to achieve the high port-to-port isolation and meanwhile reduce the profile height. For proof-of-concept demonstration, the proposed antenna is investigated, implemented and measured. The measurement results of the antenna show a wide overlapped impedance bandwidth of 60.9% (24.2-45.4 GHz) and the high isolation of better than 30 dB over the operating band. Apart from the broadband bandwidth, promising radiation characteristics including stable gain and radiation pattern, low cross-polarization level and large front-to-back ratio (FTBR) are of significance to practical applications as well.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128083215","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}
{"title":"Experimental verification of polarization reconfigurable optomechanical metasurface","authors":"Yuedan Zhou, Yifeng Liu, Chengwei Xian, Pengjun Kuang, G. Wen, Yongjun Huang","doi":"10.1109/ACES-China56081.2022.10065106","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065106","url":null,"abstract":"In this paper, an optomechanical metasurface composed of $30 times 30$ ELC metal resonant ring units is proposed for polarization reconfigurable function which works at 2527GHz with excellent circular polarization purity. The experimental results verify the nonlinear effect of the coupling between the electric field potential energy and the mechanical potential energy within the optomechanical metasurface. By using this nonlinear effect, optomechanical metasurface changes in the electromagnetic properties, and the high polarization conversion effect are achieved accordingly.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128132337","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}
{"title":"Design of A 400-Element Reflectarray Antenna Fed by Tapered Slot Antenna","authors":"Siyu Miao, F. Lin","doi":"10.1109/ACES-China56081.2022.10064723","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10064723","url":null,"abstract":"The design and measurement of a reflectarray antenna fed by a tapered slot antenna (TSA) is reported. The reflectarray contains 400 unit cells combined by square patches and square loops. The tapered slot antenna is 90 mm away from the center of the array, allowing for an edge illumination level of –10 dB. The compensation for the non-spherical wavefront of the feeding TSA is included during the element design, leading to the accurate direction of the scattering wave of a pencil beam. The TSA-fed reflectarray antenna is prototyped and experimentally investigated. The measured radiation patterns show maximum gain at 30 degrees as designed across 9.8–10.2 GHz with sidelobe levels all below –10 dB.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132725899","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}
Qian-kun Xu, Xuefeng Zheng, Haozhe Jia, Chen Wang, Lin Peng
{"title":"Single-and Dual-band Bandpass Filters Design Based on Spoof Surface Plasmon Polariton","authors":"Qian-kun Xu, Xuefeng Zheng, Haozhe Jia, Chen Wang, Lin Peng","doi":"10.1109/ACES-China56081.2022.10065245","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065245","url":null,"abstract":"A novel spoof surface plasmon polariton (SSPP) unit structure is presented in this paper. The proposed unit structure consists of two parallel coupled open stubs, which has good dispersion characteristics. Compared with the conventional rectangular SSPP structure, it may be used to reduce the size of a component. A novel single-band and a dual-band wideband bandpass filter (BPF) with good insertion loss, high rejection level, strong electric field binding ability, and simple structure are designed.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132744512","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}
{"title":"Application of Clustering Technology and Gerchberg-Papoulis Algorithm for Spherical Near Field Antenna Measurements","authors":"Fangyun Peng, Junhao Zheng, Xiaobo Liu, Zhengpeng Wang, Lei Zhao, Xiaoming Chen","doi":"10.1109/ACES-China56081.2022.10065180","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065180","url":null,"abstract":"This paper presents an optimized interpolation and extrapolation scheme for spherical near-field antenna testing. The method starts with a small amount of initial sampling data, and uses the optimization method combining partition cluster classification and Gerchberg-Papoulis algorithm to interpolate and extrapolate randomly sampled data. This optimization scheme effectively reduces the number of samples, and achieves near-far-field conversion results with the same accuracy as triple oversampling. The results demonstrate the feasibility of the proposed scheme.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132829277","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}
{"title":"Reflective Active Metasurface for Dynamic Manipulation of Electromagnetic Waves in X-Band","authors":"Yunfei Liu, Yueyi Yuan, Kuang Zhang","doi":"10.1109/ACES-China56081.2022.10065344","DOIUrl":"https://doi.org/10.1109/ACES-China56081.2022.10065344","url":null,"abstract":"An active metasurface for dynamic manipulation of electromagnetic waves is proposed in this paper. This metasurface has a high near-field focusing efficiency (64.7%) and each single meta-atom can be independently tuned by varying the capacitance of the varactor diodes. Two different simulated verifications are performed to demonstrate the feasibility of the proposed active metasurface. The proposed mechanism provides a theoretical basis for building an active metasurface system that can dynamically manipulate electromagnetic waves.","PeriodicalId":293734,"journal":{"name":"2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133189241","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}