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2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)最新文献

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Optimization of Antenna Performance based on VAE-BPNN-PCA 基于VAE-BPNN-PCA的天线性能优化
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10023171
Kangning Peng, F. Xu
{"title":"Optimization of Antenna Performance based on VAE-BPNN-PCA","authors":"Kangning Peng, F. Xu","doi":"10.1109/ICMMT55580.2022.10023171","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10023171","url":null,"abstract":"In this paper, a machine learning method combining variational auto-encoder (VAE) and back propagation network (BPNN) is proposed to predict the performance of a double-T monopole antenna, which is the return loss $(S_{11})$ in frequency 1.5-6GHz. Then the trained machine learning model can take the place of the traditional electromagnetic simulation software CST, to predict $S_{11}$ in a few seconds. Genetic algorithm (GA) is used to optimize $S_{11}$ in frequency band 2.4-3.0GHz and 5.15-5.6GHz. This method shows an accurate and efficient prediction performance for that the average prediction errors of training and testing samples for all frequency points are 1.08% and 1.07%, respectively. The optimized antenna performance based on VAE-BPNN-GA is almost in accordance with that acquired by CST, that is, the average prediction error for all frequency points is 1.20%, while occupying less computation time. VAE-BPNN-GA is also compared with PCA-BPNN-GA, and proved to have higher prediction accuracy.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114731724","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
An Inversion Method of Dielectric Material Characteristics at Terahertz Band 一种太赫兹介质材料特性的反演方法
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10022450
L. Cheng, Fuwei Wu, Yang Zhou, Yuanji Li, Yuhao Yang, Dasheng Li, Lin Jin
{"title":"An Inversion Method of Dielectric Material Characteristics at Terahertz Band","authors":"L. Cheng, Fuwei Wu, Yang Zhou, Yuanji Li, Yuhao Yang, Dasheng Li, Lin Jin","doi":"10.1109/ICMMT55580.2022.10022450","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10022450","url":null,"abstract":"Dielectric materials are widely used in various microwave, millimeter wave and terahertz devices. However, in the terahertz band, due to the factors such as expensive measurement instruments, many dielectric material characteristics are unknown, which makes the design of terahertz dielectric devices difficult. In this paper, a quasi-resonant material measurement method for the characteristics of dielectric materials is presented. Using the idea of lens antenna, the dielectric constant and the tangent of loss angle of dielectric at terahertz band are obtained by using the combined inversion of far-field measurement and full-wave simulation. Through the method of this paper, the dielectric constant and the loss tangent of Teflon near 216GHz has been obtained.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124310797","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
Research on Self-Sensing Smart Antenna with 2-D Switchable Beams 二维可切换波束自感知智能天线研究
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10022980
Xiaowan Li, Wei Zheng, Wenqi Jia, Junhong Wang
{"title":"Research on Self-Sensing Smart Antenna with 2-D Switchable Beams","authors":"Xiaowan Li, Wei Zheng, Wenqi Jia, Junhong Wang","doi":"10.1109/ICMMT55580.2022.10022980","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10022980","url":null,"abstract":"In this paper, a smart antenna with self-sensing capability and 2-D switchable beams is proposed. The antenna can automatically detect and switch its beam to track the user moving in 2-D environment, so that the user is always locating in an optimum state of radio wave coverage. The detecting system used in antenna employs microwave radar sensors to sense the target, and the controlling system uses the STM51 MCU to control the beam direction. The smart antenna in this paper uses a 2 $times 2$ microstrip patch array as the radiation structure and a compact 4 $times 4$ Butler matrix as the feeding network. The receiving power of the smart antenna system is measured in an indoor environment, which validates the efficiency of the design.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127875073","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 Aperture Dual-Polarized Folded-dipole Antenna 小型化口径双极化折叠偶极天线
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10023188
Hui Yang, Ting-Yuan Liu, Jiayue Jiang, Lu-yu Zhao, Yuanming Cai, H. Zhai
{"title":"Miniaturized Aperture Dual-Polarized Folded-dipole Antenna","authors":"Hui Yang, Ting-Yuan Liu, Jiayue Jiang, Lu-yu Zhao, Yuanming Cai, H. Zhai","doi":"10.1109/ICMMT55580.2022.10023188","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10023188","url":null,"abstract":"This article presents a miniaturized aperture dual-polarized folded-dipole antenna. The aperture is reduced by loading vertical metal columns (VMCs) in the four corners of the horizonal square radiator. At the same time, the impedance matching of the antenna with VMCs (VMC-ant) can be improved. Simulated results show that the proposed antenna can operate from 1.7 to 2.3 GHz with VSWRs $< mathbf{1}.mathbf{5}$. Stable antenna gain (about 7.8 dBi) is also achieved over the entire operating frequency band. Furthermore, the size of the proposed antenna is $mathbf{0}.mathbf{253}boldsymbol{lambda}_{mathbf{0}}times mathbf{0}.mathbf{253}boldsymbol{lambda}_{mathbf{0}}times mathbf{0}.mathbf{253}boldsymbol{lambda}_{mathbf{0}}$ ($boldsymbol{lambda}_{mathbf{0}}$ is the free-space wavelength at 2GHz). This design approach may provide a feasible solution to realize miniaturized aperture of antenna.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126507165","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
Design of a 1-bit 256-element Reconfigurable Transmitarray at Ka-band ka波段1位256元可重构发射阵列的设计
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10022451
Mengkai Xi, Ge Zhao, Lu-yu Zhao, Yuanming Cai
{"title":"Design of a 1-bit 256-element Reconfigurable Transmitarray at Ka-band","authors":"Mengkai Xi, Ge Zhao, Lu-yu Zhao, Yuanming Cai","doi":"10.1109/ICMMT55580.2022.10022451","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10022451","url":null,"abstract":"This paper presents the design and simulation procedure of a 1-bit 256-element linearly-polarized (LP) reconfigurable transmitarray antenna (RTA) in Ka-band. The RTA unit-cell (UC) size is $0.48 lambda times 0.48lambda times 0.11 lambda$, where a pair of p-in diodes are integrated to realize an 180° phase shift and thus a 1-bit discrete phase quantization is made. 3-D beam scanning is then realized by certain discrete phase distribution calculated by ray tracing method (RTM). According to full wave simulation results, the peak gain is 21.3dBi/21.5dBi in E/H-plane at 28GHz, respectively. Moreover, it has good beam scanning performance with scanning range of 45° in both E-plane and H-plane.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128106020","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
Rice Identification and Classification System Based on SVM Algorithm 基于SVM算法的水稻识别分类系统
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10023270
Jiaxin Xu, Xuetian Wang, Hongmin Gao, Ziming Zhai, Runchao Li
{"title":"Rice Identification and Classification System Based on SVM Algorithm","authors":"Jiaxin Xu, Xuetian Wang, Hongmin Gao, Ziming Zhai, Runchao Li","doi":"10.1109/ICMMT55580.2022.10023270","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10023270","url":null,"abstract":"Based on the spectral sensing and analysis technology, we designed and developed a rapid identification system for rice varieties based on the spectral characteristics analysis of rice of different varieties and origins, and integrated original parts such as light source, miniature spectral sensor, hardware development board, printer and display. The spectral data were filtered and classified using a support vector machine (SVM, support vector machine) classifier, and the recognition accuracy reached 98.41% when using the portable spectrometer in the device. The system includes two parts: software algorithm design and hardware device development. The final system realized the acquisition, transmission, processing and storage of spectral data. The operator interface of the rice type identification device was also designed and developed for real-time display of the spectral data measured by the microspectrometer and the rice type identification results.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125669877","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
Management Node Selection Based On Lora Networking 基于Lora组网的管理节点选择
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10023101
Liu Peng, Li Bo, Huang Songqi, Yang Jinliang, C. Guannan
{"title":"Management Node Selection Based On Lora Networking","authors":"Liu Peng, Li Bo, Huang Songqi, Yang Jinliang, C. Guannan","doi":"10.1109/ICMMT55580.2022.10023101","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10023101","url":null,"abstract":"In the process of LoRa ad hoc network, the positions of nodes are random and may change, resulting in changes in the time when each node receives data, and data transmission and communication traffic in the network will also change accordingly. In order to achieve better network management, it is necessary to select a management node to manage the data communication function of the entire network, and further achieve the purpose of improving the networking efficiency of the star-shaped wireless ad hoc network. Therefore, this paper proposes a management node selection method, which determines a management node by calculating the minimum number of hops and the shortest distance (implemented by RSSI) for nodes to achieve network-wide communication. Simulation experiments and data analysis show that this method can effectively improve the efficiency of network management.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121855496","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
Dual-Band-Notched Frequency Selective Absorbers with Independent Notch-Band Tuning 具有独立陷波带调谐的双带陷波频率选择性吸收器
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10022617
X. Hao, Xianqi Lin, Zhe Chen, Yulei Yang, Jiaji Li, Xie Jinxiong
{"title":"Dual-Band-Notched Frequency Selective Absorbers with Independent Notch-Band Tuning","authors":"X. Hao, Xianqi Lin, Zhe Chen, Yulei Yang, Jiaji Li, Xie Jinxiong","doi":"10.1109/ICMMT55580.2022.10022617","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10022617","url":null,"abstract":"In this paper, A dual band notched frequency selective absorber (FSA) with independent tunable notch bands is proposed based on double-layered structures. The proposed FSA is composed of a two-layered metal structure with an air layer in between. At the top layer, a wideband absorber with the application of reciprocal principle achieves the absorption band from 6.03 to 16.92 GHz. At the bottom layer, a common frequency selective surface (FSS) lossless structure is used to perform the dual-band-notched property. Moreover, we present two methods to adjust notch bands with geometrically control and electrically control, the tunable range is about 5GHz and 2GHz respectively. The simulation results show that the proposed absorber has wide absorption band and the adjustability of two independent notch bands.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132332388","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
Design of Reflectance Measurement System for P-Band Portable Absorbing Materials p波段便携式吸波材料反射率测量系统设计
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10023041
Na Zhang, Yunpeng Zhang, E. Li, Xin Song
{"title":"Design of Reflectance Measurement System for P-Band Portable Absorbing Materials","authors":"Na Zhang, Yunpeng Zhang, E. Li, Xin Song","doi":"10.1109/ICMMT55580.2022.10023041","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10023041","url":null,"abstract":"Based on the testing principle of the bow method, this paper changes the traditional semi-circular arc frame placed vertically into a horizontal straight line, and uses the dual-heel vivaldi antenna as the receiving and transmitting antenna, which is fixed at both ends of the same side of the frame. The test sample is placed in the near-field area of the receiving and transmitting antenna, and a P-band portable reflectivity test system for absorbing materials is built. The measured results can accurately present the reflectivity of different thickness absorbing materials, which verifies the reliability of the system test.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134080931","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 Ka-Band SPDT Switch Utilizing Center-Tapped Inductor Resonance Network 一种利用中心抽头电感谐振网络的ka波段SPDT开关
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2022-08-12 DOI: 10.1109/ICMMT55580.2022.10022789
Yuxin Pan, Zhiqun Li
{"title":"A Ka-Band SPDT Switch Utilizing Center-Tapped Inductor Resonance Network","authors":"Yuxin Pan, Zhiqun Li","doi":"10.1109/ICMMT55580.2022.10022789","DOIUrl":"https://doi.org/10.1109/ICMMT55580.2022.10022789","url":null,"abstract":"In this paper, a Ka-band single-pole double-throw (SPDT) with 1.6 dB insertion loss and 40 dB isolation is presented. The proposed SPDT RF switch utilizes a center-tapped inductor to resonate with the off-capacitor of the transistor. The SPDT is designed based on 65-nm CMOS process with a 0.03 mm2 core size. The simulated insertion loss of both two paths is below 1.7 dB within 26–35 GHz. The port-to-port isolation is larger than 22 dB with the highest 40 dB at 35 GHz. The input return loss and output return loss are larger than 16 dB and 14 dB, respectively. The simulated IP1dB is 9.09 dBm at 29 GHz.","PeriodicalId":211726,"journal":{"name":"2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134303360","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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