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Doppler Cardiogram Detection in the Presence of Respiration with a K-band Radar Sensor 用k波段雷达传感器检测呼吸存在时的多普勒心电图
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719905
Shuqin Dong, Changzhan Gu, L. Ran, Jun-Fa Mao
{"title":"Doppler Cardiogram Detection in the Presence of Respiration with a K-band Radar Sensor","authors":"Shuqin Dong, Changzhan Gu, L. Ran, Jun-Fa Mao","doi":"10.1109/RWS53089.2022.9719905","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719905","url":null,"abstract":"In this work, a K-band 24-GHz ac-coupled Doppler radar sensor was designed to measure the Doppler Cardiogram (DCG) in the presence of human respiration. The AC coupling architecture avoids dc-tuning and has simple hardware implementation. In addition, a novel DCG extraction algorithm was proposed to extract the accurate DCG from the Doppler radar signals scattered by the skin of the chest wall with no need for subject holding his/her breath. A PPG sensor was simultaneously employed as the reference. Experimental results show that the DCG obtained in this work is aligned well with the cardiac activities recorded by PPG. It also has many characteristic points which contain the velocity and strength information of the heart, which is highly desirable for long-term personal daily healthcare.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127929054","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
Wireless Power Transfer Sensing Approach for Milk Adulteration Detection Using Supervised Learning 基于监督学习的牛奶掺假检测无线传输传感方法
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719981
Natalia Vallejo Montoya, Daniel Rodriguez, Changzhi Li
{"title":"Wireless Power Transfer Sensing Approach for Milk Adulteration Detection Using Supervised Learning","authors":"Natalia Vallejo Montoya, Daniel Rodriguez, Changzhi Li","doi":"10.1109/RWS53089.2022.9719981","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719981","url":null,"abstract":"With the increasing demand for wireless sensors due to the growing Internet of Things (IoT) industry, it becomes desirable to use existing technologies to realize new sensing functions. As wireless power transfer (WPT) becomes a standard feature in smartphones, this paper studies the non-invasive classification of liquid solutions with different concentrations, based on the WPT technology already deployed in mobile devices. Average accuracies of up to 97.6% were achieved utilizing supervised machine learning for the classification of milk adulterated with different water volumes. For these experiments, milk concentrations of 100%, 80%, 60%, and 40% were used for classification. Additionally, singular value decomposition and boxplot analysis were used to reduce the radio frequency bandwidth needed for classification to 9.45 MHz, leading to a drastic reduction in hardware complexity and computational cost.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134122448","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 Beam-Steering Kirigami Loop Antennas 波束导向Kirigami环形天线设计
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719961
Chieh Deng, Chi-Chaan Chang
{"title":"Design of Beam-Steering Kirigami Loop Antennas","authors":"Chieh Deng, Chi-Chaan Chang","doi":"10.1109/RWS53089.2022.9719961","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719961","url":null,"abstract":"In this paper, a dual-band beam-steering loop antenna based on the kirigami technique is presented. The proposed design combines two concentrical loop antennas working at 1.35 GHz and 3.45 GHz. With the rotation of the inner loop antenna, the radiation pattern can be steered simultaneously at the frequency of 3.45 GHz. To obtain better matching impedance, a stand-alone core ring is placed inside the loop. The proposed design is made of polypropylene sheet and adhesive copper film. The proposed design is portable and easy to be fabricated. The measured results agree well with the simulation data.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128525269","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 97-GHz-Band High-Gain 8 × 8 Waveguide Slot Array Antenna 一种97 ghz波段高增益8 × 8波导缝隙阵列天线
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719937
Z. Zhong, Jin Li, Zhihong Xu, Shuai Deng, Tao Yuan
{"title":"A 97-GHz-Band High-Gain 8 × 8 Waveguide Slot Array Antenna","authors":"Z. Zhong, Jin Li, Zhihong Xu, Shuai Deng, Tao Yuan","doi":"10.1109/RWS53089.2022.9719937","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719937","url":null,"abstract":"A W-band high-gain 8 × 8 waveguide slot array antenna made by using computer numerical controlled machining process is presented in this paper. The antenna is composed of a centrosymmetric array of 64 radiation slots that are distributed in the broad walls of eight parallel rectangular waveguides. Each of the waveguide containing eight radiation slots is fed by a two-way waveguide power divider through another one coupling slot. RF design, fabrication, and measurement of the antenna have been discussed. The manufactured antenna demonstrates at 95.1–98 GHz desired radiation performance with a reflection coefficient of lower than -10 dB and in-band realized gains of 16.8–18.1 dBi.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133784416","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 Scalable Matching Mechanism for Online Heterogeneous Positioning Fusion System 一种在线异构定位融合系统的可扩展匹配机制
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719930
Chung-Yuan Chen, Ruey-Beei Wu
{"title":"A Scalable Matching Mechanism for Online Heterogeneous Positioning Fusion System","authors":"Chung-Yuan Chen, Ruey-Beei Wu","doi":"10.1109/RWS53089.2022.9719930","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719930","url":null,"abstract":"Wi-Fi fingerprint positioning has the advantages of being infrastructure-less and easily accessible, but the weaknesses in terms of lower accuracy and limited Wi-Fi scanning speed are also hard to tackle. On the other hand, with the progress in computer vision and deep learning, vision-based positioning based on commonly available surveillance cameras becomes a promising solution for providing location-based services. But the major difficulty lies in checking the identity of detected people just by the captured images. This paper proposed a novel Matching Mechanism to address the identity matching problem, which associates the non-identifiable positioning sources like vision to the easily identifiable positioning sources like smart phone’s Wi-Fi. Practicalities like scalability and online operation are considered in both the design and implementation of the mechanism. As a result, the experiment not only proved the effectiveness of matching the vision-based and Wi-Fi positioning results but also showed an improvement in positioning accuracy by over 60%.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122144407","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
A Polarization Insensitive Frequency Selective Bianisotropic Surface 偏振不敏感频率选择双各向异性表面
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719948
M. Sumaid, N. Shoaib, Fahad Ahmad, S. Nikolaou
{"title":"A Polarization Insensitive Frequency Selective Bianisotropic Surface","authors":"M. Sumaid, N. Shoaib, Fahad Ahmad, S. Nikolaou","doi":"10.1109/RWS53089.2022.9719948","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719948","url":null,"abstract":"In this paper, a novel polarization insensitive frequency selective bianisotropic surface (FSBS) is presented. The unit cell is composed of a ring filed with multiple square loops and merged 45⁰ angular stubs while it is backed with a square patch. The simulation results show that the proposed FSBS provides absorption and partial reflection simultaneously on thirteen distinctive frequency bands ranging from C-band to K-band with maximum absorption of 99% on one side and 80% reflection from the other side. The FSBS presents a distinct feature of polarization insensitivity with angular stability up to 60⁰ against the oblique incidence of an arbitrarily oriented wave for both linear and circular polarization.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"47 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125707871","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 60 GHz-band S/H CMOS IC for Direct RF Undersampling Receiver 用于直接射频欠采样接收机的60ghz波段S/H CMOS集成电路
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719927
Tomoyuki Furuichi, Nagahiro Yoshino, M. Motoyoshi, S. Kameda, N. Suematsu
{"title":"A 60 GHz-band S/H CMOS IC for Direct RF Undersampling Receiver","authors":"Tomoyuki Furuichi, Nagahiro Yoshino, M. Motoyoshi, S. Kameda, N. Suematsu","doi":"10.1109/RWS53089.2022.9719927","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719927","url":null,"abstract":"In this paper, a 60 GHz-band Sample and Hold (S/H) IC has been developed for a direct RF undersampling receiver. In millimeter-wave wireless systems such as IEEE 802.11ad, broadband characteristic (e.g. channel bandwidth of 2 GHz) is required. In this case, the minimum sampling frequency becomes 4 GHz and output buffer amplifier should have at least 2 GHz bandwidth. This S/H-IC can sample 60 GHz RF signal by 4 GHz clock and it works as a 30th order undersampling receiver. Since the parasitic capacitance of FET used in the 2 GHz bandwidth output buffer amplifier is almost same value as the hold capacitor, the hold capacitor can be removed in our design. This S/H-IC has been fabricated in a 65nm CMOS process. The fabricated IC together with 4 GHz ADC shows SNR of 20.2 dB (channel bandwidth of 2 GHz) and EVM of less than 5.5% for 64QAM.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129216508","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 50 Gbps 49 mW CMOS Analog Multiplexer for a DAC Bandwidth Tripler 用于DAC带宽三倍器的50 Gbps 49 mW CMOS模拟多路复用器
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719979
K. Kawahara, Joe Sawada, Takumi Kamo, Y. Umeda, K. Takano
{"title":"A 50 Gbps 49 mW CMOS Analog Multiplexer for a DAC Bandwidth Tripler","authors":"K. Kawahara, Joe Sawada, Takumi Kamo, Y. Umeda, K. Takano","doi":"10.1109/RWS53089.2022.9719979","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719979","url":null,"abstract":"This paper presents a CMOS analog multiplexer for a DAC bandwidth tripler. The bandwidth tripler extends the bandwidth of the DACs three times without generating image signals. We revealed the effect of the non-linearity of the AMUX in the bandwidth tripler, and pseudo differential switches were used to reduce the distortions. To compensate for the limited performance of CMOS devices, a broadband matching circuit was inserted into the output of the AMUX. Post-layout simulation results demonstrated a 50 Gbps PAM4 signal generation with a small power consumption of 49 mW. The power efficiency of the AMUX is only 0.98 pJ/bit, which is superior to the previous work.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121489728","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
Radiowave Propagation Effect on Linearization for Earth-Space Satellite Links 无线电波传播对地空卫星链路线性化的影响
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719964
K. Chuang
{"title":"Radiowave Propagation Effect on Linearization for Earth-Space Satellite Links","authors":"K. Chuang","doi":"10.1109/RWS53089.2022.9719964","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719964","url":null,"abstract":"Over the past decades, earth orbiting Satellites may employ different linearization techniques to cope with the increasing demand of spectral efficiency and data quality. Unlike the free-space transmission on earth, satellite links typically suffer from low signal to noise ratio and atmospheric impairments. This paper provides a framework to investigate the effect of radiowave propagation characteristics on non-linear power amplifiers. In particular, Nakagami-m fading is applied to the real-time amplifier response collected from a radio frequency testbed. The experimental results show that the prediction model in the context of digital pre-distortion correction could be optimized in order to index the atmospheric fade level and to compensate for the nonlinearities arising from the earth-space impairments.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128357453","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
Separation of Multiple Closely Spaced Sources Using Frequency Sweep Single-Channel Continuous Wave Doppler Radar 利用扫频单通道连续波多普勒雷达分离多个紧密间隔源
2022 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2022-01-16 DOI: 10.1109/RWS53089.2022.9719976
Khaldoon Ishmael, O. Boric-Lubecke
{"title":"Separation of Multiple Closely Spaced Sources Using Frequency Sweep Single-Channel Continuous Wave Doppler Radar","authors":"Khaldoon Ishmael, O. Boric-Lubecke","doi":"10.1109/RWS53089.2022.9719976","DOIUrl":"https://doi.org/10.1109/RWS53089.2022.9719976","url":null,"abstract":"Doppler radar physiological monitoring has recently been demonstrated effective in applications where multiple subjects may be present in the radar field of view. Most multiple subject monitoring methods reported to date rely on ranging with FMCW or UWB radar and direction of arrival techniques using antenna beam scanning or multiple antennas. This paper presents a frequency tuning-based approach for isolating signals from multiple sources by alternatively suppressing individual sources with a single channel, single antenna radar. This technique was demonstrated experimentally to separate signals from two closely spaced, nearly equidistant mechanical movers simulating human breathing.","PeriodicalId":113074,"journal":{"name":"2022 IEEE Radio and Wireless Symposium (RWS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115947301","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
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