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2020 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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A Dual Band Switchable Digital Phase Shifter for V/UHF Band 一种用于V/UHF频段的双频可切换数字移相器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360113
Wenliang Hua, Xueguan Liu, Minglai Zhou, Youling Xie
{"title":"A Dual Band Switchable Digital Phase Shifter for V/UHF Band","authors":"Wenliang Hua, Xueguan Liu, Minglai Zhou, Youling Xie","doi":"10.1109/IWS49314.2020.9360113","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360113","url":null,"abstract":"This letter presents the development of a 6-bit dual band switchable digital phase shifter band for using in wireless signals of unknown frequency operating at very/ultra-high frequency(V/UHF). The proposed solution is based on a vector modulator design which allows a phase change from 0° to 360°. In order to achieve the purpose of dual band switchable, a segmented vector combination phase shift method is used. An RMS phase error of about 5°, insertion loss around 7dB and amplitude imbalance less than 2dB were measured from 200-800MHz. The board dimensions are 9.2cmX7.6cm.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115271656","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 Fully-Reconfigurable Coupler with Lumped Elements 具有集总元素的完全可重构耦合器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360156
Bing Xie, Linsheng Wu, Junfa Mao
{"title":"A Fully-Reconfigurable Coupler with Lumped Elements","authors":"Bing Xie, Linsheng Wu, Junfa Mao","doi":"10.1109/IWS49314.2020.9360156","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360156","url":null,"abstract":"A lumped-element coupler is proposed with fully-reconfigurable power-division ratio, phase difference between output ports, and operating frequency. It is constructed with 8 lumped inductors and 8 variable capacitors. Values of the variable capacitors are functions of the power-division ratio, phase difference, operating frequency and inductors values. The function can be derived through the even-/odd-mode theory. It is shown that the proposed coupler provide a 90 ° ±45° tunable phase difference when maintaining the equal power division at 4.7 GHz, a tunable power division ratio from −15 to 0.6 dB and tunable operating frequency from 4.6 to 8.6 GHz when the phase difference is 90°. The component size can be miniaturized signifi-cantly by using integrated lumped elements.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115364847","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
Respiratory Rate Estimation of Standing and Sitting People using WiFi Signals 使用WiFi信号估算站立和坐着的人的呼吸频率
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360137
Zhimeng Xu, Aying Guo, Liangqin Chen
{"title":"Respiratory Rate Estimation of Standing and Sitting People using WiFi Signals","authors":"Zhimeng Xu, Aying Guo, Liangqin Chen","doi":"10.1109/IWS49314.2020.9360137","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360137","url":null,"abstract":"Breathing is an essential component to assess the physical health of human being. This paper presents a low-cost and contactless method for respiration estimation of a standing or siting person using WiFi signal. The channel status information (CSI) of WiFi signal is exploited to detect the signal fluctuation caused by the exhalation and inhalation movement of the chest. A combined frequency domain and time domain interval of waveform peak detecting method is proposed to improve the estimation performance. Experiment results show that the proposed method is effective and accurate for respiration rate estimation.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115420411","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: 5
A Pilot-based Hybrid and Reduced Complexity Channel Estimation Method for Downlink NB-IoT Systems 一种基于导频的下行NB-IoT系统混合低复杂度信道估计方法
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360009
Md Khalid Hossain Jewel, R. S. Zakariyya, F. Lin
{"title":"A Pilot-based Hybrid and Reduced Complexity Channel Estimation Method for Downlink NB-IoT Systems","authors":"Md Khalid Hossain Jewel, R. S. Zakariyya, F. Lin","doi":"10.1109/IWS49314.2020.9360009","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360009","url":null,"abstract":"Efficient and low complexity channel estimation has become the prime concern in Narrowband Internet of Things (NB-IoT) receiver performance. The maximum likelihood estimator (MLE) is simple in complexity but subjected to low estimation precision, whereas well-known 2D Wiener filtering offers efficient performance to estimate the channel but entails severe complexity. Application of two 1D Wiener filter (for frequency and time domain) can reduce its complexity but degrades the performance. In this work, we proposed an efficient hybrid channel estimation method for the downlink NB-IoT systems by combining the time domain Wiener filter technique and computationally simple frequency domain MLE. The proposed technique achieves a good balance regarding both system efficiency and computational complexity. Computer simulations prove the significant improvement of the mean square error (MSE) and the block error rate (BLER) in comparison to the existing two 1D Wiener filtering and MLE technique. The reduced system complexity is shown by the comparison of the total number of complex multiplication in the aforementioned methods.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"268 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114161863","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
Single Ridged Waveguide Based Resonant Slotted Antenna Array for Millimeter Wave Radar Application 基于单脊波导的毫米波雷达谐振开槽天线阵列
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360161
Yechun Xu, G. Jin, Ju Yang, S. Liao
{"title":"Single Ridged Waveguide Based Resonant Slotted Antenna Array for Millimeter Wave Radar Application","authors":"Yechun Xu, G. Jin, Ju Yang, S. Liao","doi":"10.1109/IWS49314.2020.9360161","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360161","url":null,"abstract":"A new single ridged waveguide based resonant slotted antenna array for millimeter wave radar application is proposed. The single ridged waveguide is formed by PCB substrate with upper copper foil at the bottom and aluminum structure at the top. Resonant slots are placed along the centerline of the single ridged waveguide's broad wall to obtain a stable and symmetric radiation pattern. By changing the depths at both sides of the ridge, electric neutral plane shifts from the centerline and the current can excite the resonant slot leading to radiation. A protype is designed, and the impedance bandwidth is from 75.94 GHz to 81.21GHz (6.7%). The sidelobes level is lower than 25dB within the entire bandwidth. Horizontal beam angle is ±62°. and vertical beam deviation angle is ±2°. Moreover, the proposed antenna is easy fabrication, high efficiency (95%) and low cost.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114287523","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 24 GHz end-fire helix antenna with high gain turn ratio in PCB technology 一种采用PCB技术的高增益匝比24ghz端火螺旋天线
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360006
Y. Mao, E. Shiju
{"title":"A 24 GHz end-fire helix antenna with high gain turn ratio in PCB technology","authors":"Y. Mao, E. Shiju","doi":"10.1109/IWS49314.2020.9360006","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360006","url":null,"abstract":"A wideband end fire antenna architecture in planar technology with fewer turns: helix antenna in planar technology adopting thickness of quarter wavelength is suggested. A wideband 24 GHz helix antennas with 2.25 turns in rogers compressed RT 4350 technology is presented. The antenna has a bandwidth of 6.2 GHz for S11; gain of 9.3 dBi, half power width of 39.5° and 39° respectively in X-Z and X-Y plane. This helix antenna boasts of wide bandwidth, high gain, high half power width, compactness and high gain turn ratio. And it could also be utilized in antenna design for other frequency bands with compressed PCB technology, and as well for on-chip THz antenna design.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114301616","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
A Hybrid Genetic Algorithm for Robot Automatic Tuning of Microwave Filters 微波滤波器机器人自动调谐的混合遗传算法
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360070
Yan Zhang, Huan Meng, Ke-Li Wu
{"title":"A Hybrid Genetic Algorithm for Robot Automatic Tuning of Microwave Filters","authors":"Yan Zhang, Huan Meng, Ke-Li Wu","doi":"10.1109/IWS49314.2020.9360070","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360070","url":null,"abstract":"When using the extracted coupling matrix for tuning, the template matrix needs to be carefully generated to satisfy all the specifications, to accommodate all the parasitic couplings, and to be within the tuning range of each tuning screw. To obtain this coupling matrix with optimization, lots of local minima are encountered due to the complexity of the problem. A hybrid genetic algorithm is introduced to pull the optimization process out of the local minimum and finally converge to the global minimum. A good result is observed for a filter designated for 5G application.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115762202","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
An ISAR Automatic Target Recognition Approach Based on SBR-based Fast Imaging Scheme and CNN 基于sbr快速成像方案和CNN的ISAR自动目标识别方法
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/iws49314.2020.9360206
Yusheng Li, Baojin Yang, Zi He, Rushan Chen
{"title":"An ISAR Automatic Target Recognition Approach Based on SBR-based Fast Imaging Scheme and CNN","authors":"Yusheng Li, Baojin Yang, Zi He, Rushan Chen","doi":"10.1109/iws49314.2020.9360206","DOIUrl":"https://doi.org/10.1109/iws49314.2020.9360206","url":null,"abstract":"A convolutional neutral network has been proposed to identify different classes of targets in this paper. The database of CNN can be acquired by using SBR-based fast image scheme. The numerical results show the efficiency and accuracy for the construction of database. Moreover, it can achieve accuracy of 95% for the 3-class task.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116228125","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 Cross-Coupled Active Rectifier-Booster Regulator Integrated Circuit for Broadband Wireless Energy Harvesting System 宽带无线能量收集系统的交叉耦合有源整流-升压-稳压集成电路
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359959
Shiquan Fan, Chenxi Yuan, Wu Miao, Raja Usman Tariq, M. Ye, Zheyi Yuan, Li Geng
{"title":"A Cross-Coupled Active Rectifier-Booster Regulator Integrated Circuit for Broadband Wireless Energy Harvesting System","authors":"Shiquan Fan, Chenxi Yuan, Wu Miao, Raja Usman Tariq, M. Ye, Zheyi Yuan, Li Geng","doi":"10.1109/IWS49314.2020.9359959","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359959","url":null,"abstract":"In this paper, a fully integrated 3-stage active recti-fier-booster regulator (RBR) is proposed. The discrete diodes which used in conventional RBR structure are completely replaced by standard power PMOS and NMOS in the new topology to realize fully integration. Cross-coupled driving technique is adopted to achieve self-driving of the power MOS switches without any additional functional circuit. Thus, the power consumption and size are both reduced. Finally, the RBR is fabricated by using standard 180nm CMOS process. The total active area is about 0.32 mm2. Experimental results show that the proposed on-chip RBR can provide 2.11 V output voltage under -10 dBm input power and 46% peak efficiency under -4 dBm. Besides, the designed RBR shows a wide-band range with high power conversion efficiency features. The excellent performance shows the wide practicality of the proposed design method for broadband wireless energy harvesting system.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127452289","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
Mathematical Model and Reference Frequency Optimization for Digital Dual-Band Pulsewidth Modulation 数字双频脉宽调制的数学模型和参考频率优化
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359934
Zihao Chen, Jun Yang, Xiuyin Zhang, Jinliang Bai, Tianjian Feng, Jie Tang, Guanhong Chen, Zepeng Jiang
{"title":"Mathematical Model and Reference Frequency Optimization for Digital Dual-Band Pulsewidth Modulation","authors":"Zihao Chen, Jun Yang, Xiuyin Zhang, Jinliang Bai, Tianjian Feng, Jie Tang, Guanhong Chen, Zepeng Jiang","doi":"10.1109/IWS49314.2020.9359934","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359934","url":null,"abstract":"In all-digital transmitter (ADT), pulsewidth modulation (PWM) is a popular pulse coding technique. This paper makes research on the PWM technique for dual-band ADT. Firstly, the mathematical model of the dual-band PWM signal is derived and then the frequency components of the modulated signal are analyzed. Based on the analysis, an algorithm is designed to find the optimal reference frequency to improve the quality of the modulated signal. The simulation results validate the effectiveness of the mathematical model. In addition, with the optimal reference frequency, the spurious-free bandwidths are significantly improved, and the maximum improvement of error vector magnitude (EVM) is 5.4353%.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125423224","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
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