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2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)最新文献

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A simple joint MUSIC-phase difference fitting DOA estimation method 一种简单的联合MUSIC-phase difference拟合DOA估计方法
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790237
Wentao Zhang, C. Miao, Wen Wu, Yue Ma
{"title":"A simple joint MUSIC-phase difference fitting DOA estimation method","authors":"Wentao Zhang, C. Miao, Wen Wu, Yue Ma","doi":"10.1109/IMBioC52515.2022.9790237","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790237","url":null,"abstract":"The application of direction of arrival (DOA) estimation techniques has increased in the biomedical field such as human body condition detection and medical imaging. In this paper, a joint Multiple Signal Classification Algorithm (MUSIC)-phase difference fitting DOA estimation algorithm is proposed. Theoretical analysis and simulation results show that it requires low computational effort and provides excellent estimation accuracy when the signal-to-noise ratio (SNR) is high. The algorithm also has good estimation accuracy at low SNRs.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114658268","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
Multifrequency RF sensor for the non-contact monitoring of tissues 用于非接触式组织监测的多频射频传感器
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790095
Alexiane Pasquier, Y. Le Diraison, S. Serfaty, P. Joubert
{"title":"Multifrequency RF sensor for the non-contact monitoring of tissues","authors":"Alexiane Pasquier, Y. Le Diraison, S. Serfaty, P. Joubert","doi":"10.1109/IMBioC52515.2022.9790095","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790095","url":null,"abstract":"The dielectric properties of organic tissues are related to their biological composition and structure. Monitoring those properties in a non-invasive and non-contact way is still a major challenge in biomedical applications. This paper presents a multifrequency inductive sensor based on an original combination of several passive radiofrequency inductive resonators, called WMFR. To assess the ability of the WMFR to monitor the dielectric properties of tissues, the decomposition of a beef muscle tissue sample was sensed during 6 days. The dielectric properties of the tissue were estimated during decomposition, and the WMFR was found able to sense the changes over time at 7 different frequencies ranging in the 20-350 MHz bandwidth. This study opens the way to a new generation of non-contact and wearable sensors dedicated to dielectric monitoring applications in the biomedical field.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116683880","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
Water Antenna Based Passive Wireless Temperature Sensor 基于水天线的被动无线温度传感器
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/imbioc52515.2022.9790260
Tingli Zheng, H. Xu, T. Zhou, Y. Zhou
{"title":"Water Antenna Based Passive Wireless Temperature Sensor","authors":"Tingli Zheng, H. Xu, T. Zhou, Y. Zhou","doi":"10.1109/imbioc52515.2022.9790260","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790260","url":null,"abstract":"Passive wireless temperature sensors have attracted great attention in power systems, since they can work safely and stably under high temperature and high pressure environment with the advantages of compact size, easy integration, low-cost and high sensitivity. This paper proposes a type of passive wireless temperature sensor based on water patch antenna. The permittivity of the distilled water integrated into the antenna substrate changes with temperature, which results in the changes of resonant frequency. A single-polarized and a dual-polarized water antenna with temperature sensitivity are designed, which are working at around 2 GHz. The single-polarized water antenna works at 2.06 GHz at room temperature, with a bandwidth $(vert mathrm{S}11vert < -10 text{dB})$ of about 3% and gain of 3.50 dBi. The dual-polarized water antenna works at 1.95 GHz at room temperature, with a bandwidth $(vert mathrm{S}11vert < -10 text{dB})$ of about 2% and gain of 2.43 dBi. The simulation results show that the sensitivity of 5 MHz/10°C can be obtained when the temperature changes from 20 °C to 90°C for both sensors.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123431198","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
Non-Contact Vital Sign Monitoring With a Metamaterial Surface 利用超材料表面进行非接触式生命体征监测
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790159
Dat T. Nguyen, Qihang Zeng, Xi Tian, J. S. Ho
{"title":"Non-Contact Vital Sign Monitoring With a Metamaterial Surface","authors":"Dat T. Nguyen, Qihang Zeng, Xi Tian, J. S. Ho","doi":"10.1109/IMBioC52515.2022.9790159","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790159","url":null,"abstract":"Vital sign monitoring is important for determining the health status and well-being of an individual. Despite their high level of accuracy, clinical sensing methods for vital signs, such as heart or respiration signals, often require direct skin contact and the use of wires, making them restrictive and inconvenient. In contrast, alternative sensing approaches using wireless means can be comfortable for users and are suitable for long-term, continuous health monitoring scenarios. Recent advances in physiological sensing using Doppler radars present great potential for non-contact vital sign monitoring, but face many challenges due to background clutter and large body motions. In this work, we develop an integrated system for non-contact vital sign monitoring based on microwave metamaterials and software-defined Doppler radar. Our sensor is thin, flexible, and able to monitor health through clothing. We demonstrate our system's capability in respiration and cardiac sensing through experiments on a healthy volunteer and validate its cardiac sensing accuracy against electrocardiography as the gold standard. Validation results show a Pearson's correlation coefficient $rapprox 0.9$ and Bland-Altman agreement limits of ±37.1 ms between our sensor's and the gold standard's estimation of heart beat-to-beat intervals.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128397247","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
Mu-near-zero medium sensor for measuring microwave absorbing material 用于测量微波吸收材料的mu近零介质传感器
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790167
Y. Mao, Tao Zhou, Yongchi Zhou
{"title":"Mu-near-zero medium sensor for measuring microwave absorbing material","authors":"Y. Mao, Tao Zhou, Yongchi Zhou","doi":"10.1109/IMBioC52515.2022.9790167","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790167","url":null,"abstract":"As a kind of electromagnetic functional material, radar absorbing material has the advantages of being easy to be shaped and suitable for irregular surfaces. It is very widely used in the military field. Therefore accurate measurement of permittivity of absorbing material is very important for military equipment. The proposed mu-near-zero (MNZ) medium sensor has a two-layer structure consisting of microstrip lines and channels with metal through holes. The permittivity of some typical absorbing materials is measured at the frequency of 11.14 GHz. The measured values are in good agreement with the reference value, which indicates the validity of the MNZ sensor in material measurement.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121673687","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
On-Chip Analysis of Gastric Slow Waves: Toward a Closed-Loop System for Managing Gastrointestinal Disorders 胃慢波芯片分析:迈向胃肠道疾病管理的闭环系统
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/imbioc52515.2022.9790293
Wahib Alrofati, Joseph C. Sassoon, A. Farajidavar, Amir Javan-Khoshkholgh
{"title":"On-Chip Analysis of Gastric Slow Waves: Toward a Closed-Loop System for Managing Gastrointestinal Disorders","authors":"Wahib Alrofati, Joseph C. Sassoon, A. Farajidavar, Amir Javan-Khoshkholgh","doi":"10.1109/imbioc52515.2022.9790293","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790293","url":null,"abstract":"This paper aims to develop and validate a closed-loop system that can wirelessly acquire gastric electrical activity, called slow waves, from multiple channels, and deliver electrical stimulation pulses automatically to modulate the slow-wave activity in the presence of abnormality. The system utilizes a front-end unit and a stationary back-end unit connected to a computer. A 32-channel recording module and a 32-channel simulating module comprise the front-end unit. Both the front-end and back-end units were developed using commercial off-the-shelf components. A graphical user interface (GUI) was designed to process and display the recorded data in real-time and store the data for offline analysis. The gain of the analog conditioning circuit, the range of the optimal slow wave frequency, as well as the stimulation pulse configuration, are also programmable directly through the GUI. The GUI can be used to configure the system to either manually deliver stimulation or to automatically deliver stimulation when a signal is detected outside the optimal slow wave frequency. The system was successfully validated on a benchtop setting. The system was able to detect slow-wave abnormal frequencies on-chip and apply stimulation commands automatically. The system can be used for treating functional gastrointestinal disorders in the future.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134121471","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 Compact Non-Contact Heart Sound Sensor Based on Millimeter-Wave Radar 基于毫米波雷达的紧凑型非接触式心音传感器
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790257
Li Wen, Shuqin Dong, Changzhan Gu, Jun-Fa Mao
{"title":"A Compact Non-Contact Heart Sound Sensor Based on Millimeter-Wave Radar","authors":"Li Wen, Shuqin Dong, Changzhan Gu, Jun-Fa Mao","doi":"10.1109/IMBioC52515.2022.9790257","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790257","url":null,"abstract":"A novel radar sensing system for non-contact and continuous detection of heart sound is proposed in this paper, which is a custom designed 120 GHz interferometric radar. The moving trajectory of the heart pulses can be accurately demodulated based on the radar signals, and thus the heart sounds can be reconstructed. Experiments have been carried out with electrocardiogram (ECG) and phonocardiogram (PCG) as reference. The results show the heart pulse signatures to an accuracy of micrometer level can be detected by the designed radar sensor, and the reconstructed heart sound can be visually and acoustically recognized. There is also a certain degree of similarity between the PCG signals and the heart sound signals reconstructed by the proposed radar sensor. The experimental results reveal the possibility for the proposed radar system as a heart sound sensor to be employed inside and outside the clinic, such as applications in the vast internet-of-things (IoT) and in-home health monitoring.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132163171","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: 3
Bracelet Textile Electrodes for Bioimpedance Measurements 生物阻抗测量用手链织物电极
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/IMBioC52515.2022.9790244
G. Monti, Emanuele Paiano, Federica Raheli, L. Tarricone
{"title":"Bracelet Textile Electrodes for Bioimpedance Measurements","authors":"G. Monti, Emanuele Paiano, Federica Raheli, L. Tarricone","doi":"10.1109/IMBioC52515.2022.9790244","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790244","url":null,"abstract":"In this paper novel textile electrodes for bioimpedance measurements are presented and discussed. The proposed electrodes are fully-textile and suitable to be embedded into a shirt.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131325264","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
Battery-Less ECG Embedded in Smart Textiles 无电池心电图嵌入智能纺织品
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/imbioc52515.2022.9790093
J. Walk, Julian Elsensohn, Moritz Fischer, Thomas Ussmueller
{"title":"Battery-Less ECG Embedded in Smart Textiles","authors":"J. Walk, Julian Elsensohn, Moritz Fischer, Thomas Ussmueller","doi":"10.1109/imbioc52515.2022.9790093","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790093","url":null,"abstract":"The presented system design offers a wireless and smart way to realize long term ECG measurements in order to increase the patient's wearing comfort. The ECG electrodes are embedded in smart textiles providing reliable results in test measurements, comparable to typical medical adhesive electrodes. To further increase the comfort factor of the patients, a corded supply as well as space-consuming batteries are avoided. The device is completely powered by passive RFID. Our demonstration system is based on a MSP430 microcontroller, textile electrodes, ECG amplifier and analog signal processing. The circuit is implemented as minimalist design to meet the passive supply requirements: Given a reference value of 85 beats per minute, an average current consumption of $192mumathrm{A}$ is achieved at a supply voltage of 3 V. This allows the patient a movement range of up to 2.7 m.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121955193","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
On Fast Estimation of SAR for Metallic Rim-based MIMO Handsets 基于金属环的MIMO手机SAR的快速估计
2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2022-05-16 DOI: 10.1109/imbioc52515.2022.9790111
M. Jamshed, Masood Ur-Rehman
{"title":"On Fast Estimation of SAR for Metallic Rim-based MIMO Handsets","authors":"M. Jamshed, Masood Ur-Rehman","doi":"10.1109/imbioc52515.2022.9790111","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790111","url":null,"abstract":"Use of multiple-input-multiple-output (MIMO) antennas in a mobile handset helps to achieve an increased capacity and enhanced spectrum efficiency. Although, specific absorption rate (SAR) is one of the most important and widely used metrics for the characterisation of suitability, safety and compliance of commercial mobile handsets, its estimation for MIMO-enabled handsets is a complex and time consuming process. For the MIMO configurations, the SAR is the vector sum of $E$ fields of individual antenna elements. The phase and amplitude of these $E$ fields are dependent on MIMO precoding. Hence, SAR estimation for MIMO configurations becomes a lengthy and tedious analysis that makes it complex and rather impractical in real measurement scenarios. In this paper, a $2times 2$ MIMO configuration of the metallic rim antenna is analyzed to study the dependency of phase offset on SAR. The antenna elements are placed on the shorter edge of the metallic rim, resonating at 2.1 GHz. It is estimated that the maximum value of SAR is maintained at 0°, while the handset is used in talking position. This knowledge of phase offset reliance on SAR can help in reducing the overall time for SAR estimation as SAR needs not to be calculated for other phase offsets.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124847793","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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