{"title":"A Dual-band Ultra-Miniaturized Scalp-Implantable Antenna for In-Body Bioelectronics","authors":"Lei Zhu, Hang Wang, Yong Guo","doi":"10.1109/IMBioC52515.2022.9790204","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790204","url":null,"abstract":"In this work, an ultra-miniaturized implantable antenna operating in dual frequency bands, including the Industrial, Scientific, and Medical (ISM) band (902–928 MHz) and Midfield band, is proposed. The key feature of the proposed antenna is its small volume ($6 text{mm}times 6 text{mm}times 0.5 text{mm}=18 text{mm}^{3}$) compared to the existing works. And the antenna size reduction is mainly achieved by employing a spiral-shaped radiator, a shorting strategy and slots in the ground plane. The results demonstrate −10dB fractional bandwidths of 13.4% (871 - 994 MHz) and 6% (1398-1485 MHz). And the peak realized gain values are −32.8 dBi and −24.8 dBi at the desired bands, respectively. The designed antenna can be a potential candidate for the scalp implantable bioelectronics.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"98 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":"123062605","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":"Wireless Resonant Energy Link for Joint Flexion Monitoring: Experimental Investigation by Using a NanoVNA","authors":"Nizar Brahim, G. Monti, L. Tarricone","doi":"10.1109/imbioc52515.2022.9790147","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790147","url":null,"abstract":"In this paper the use of a wireless resonant energy link for joint flexion monitoring is experimentally investigated. Configurations using two and four coils are analyzed through a compact and very low-cost setup suitable for the implementation of a wearable monitoring system.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"42 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":"123842856","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":"A concurrent 17/24 GHz low-noise amplifier for vital signs monitoring system","authors":"B. Huang, Guoxiao Cheng, Zongxiang Wang, W. Kang","doi":"10.1109/imbioc52515.2022.9790258","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790258","url":null,"abstract":"This paper presents a concurrent 17/24 GHz low-noise amplifier (LNA) for a robust vital-sign radar detection application. Dual-band vital sign radar system is potentially resistant to multipath effects by analyzing the signal spectrum of human targets received at each individual frequency band. As an important component of the concurrent dual-band radar system, a high-performance dual-band LNA based on $0.13mu mathrm{m}$ CMOS process working at 17 GHz and 24 GHz is designed. The circuit topology consists of a notch amplifier and a wideband amplifier. A current reuse technology is employed to reduce the system power consumption. The post simulation results of the proposed LNA show that the $S_{11}$ and $S_{22}$ are both lower than −10 dB; gains of 13.6 dB and 11 dB, noise figure (NF) of 5.8 dB and 4.6 dB at 17 and 24 GHz, respectively. The chip area is $1030times 700 mu mathrm{m}^{2}$, and the current is 34.9 mA at 1.8 V.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"10 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":"124111993","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}
Wei Ye, Wen‐Sheng Zhao, Jing Wang, Dawei Wang, Gaofeng Wang
{"title":"A Split-Ring Resonator-Based Planar Microwave Sensor for Microfluidic Applications","authors":"Wei Ye, Wen‐Sheng Zhao, Jing Wang, Dawei Wang, Gaofeng Wang","doi":"10.1109/IMBioC52515.2022.9790171","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790171","url":null,"abstract":"This paper demonstrates a high-sensitivity microwave microfluidic sensor for retrieving the liquid permittivity. To increase the sensitivity and notch depth, the equivalent circuit model of split-ring resonator (SRR) structure is analyzed. Then, the interdigital capacitor structure (IDC) and defected ground structure (DGS) are introduced. A polydimethylsiloxane (PDMS) block is placed above sensing area to realize microfluidic channel, which completely covers interdigital gap and makes full use of strong electric field. Ethanol-water mixed solution is injected into the channel as the measured liquid. The effective permittivity of the channel is thereby changed to affect the resonance frequency, which is used to detect the liquid sample. Our proposed sensor achieved an average sensitivity of 1.461% using very small liquid sample volume about $0.68 mu mathrm{L}$, and the values extracted from the prototype are in good agreement with the actual data. The average sensitivity is defined as the average of the frequency shift per unit permittivity at each ethanol fraction.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"11 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":"125153947","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}
L. Ukkonen, L. Sydänheimo, T. Björninen, Stefanus A. Wirdatmadja, N. Pournoori, M. Voutilainen
{"title":"Antennas and Wireless Power Transfer to Small Biomedical Brain Implants","authors":"L. Ukkonen, L. Sydänheimo, T. Björninen, Stefanus A. Wirdatmadja, N. Pournoori, M. Voutilainen","doi":"10.1109/IMBioC52515.2022.9790227","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790227","url":null,"abstract":"In this paper and presentation, we will focus on different aspects of backscattering-based wireless communication and power transfer to small biomedical implants. We will present three different antenna topologies for data and power transfer through tissue, in vitro and in vivo studies on implantable intracranial pressure (ICP) sensors and give insight and analysis on wireless link reliability in tissue environment. We will also present radio frequency identification (RFID) -based implant platform and communication method. Moreover, we will focus on differences and challenges of in vivo environment compared to laboratory phantoms and tissue models. In our studies, different types of implantable antennas have been tested to investigate reliability, accuracy and sensitivity of the brain implants: a hybrid near field-far field system with a piezoresistive sensor for ICP monitoring, a UHF band spilt-ring resonator system and LC tank based miniature implantable antenna. This paper will present these implant antennas and wireless power transfer in tissue environment present in human head.","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":"125210370","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}
Zhongyuan Fang, Liheng Lou, Kai Tang, Wensong Wang, Yuanjin Zheng
{"title":"Circuit, Antenna, and Algorithm Co-Design of CMOS-Integrated Coherent FMCW Radar Sensor for Edge Vital Signs Monitoring","authors":"Zhongyuan Fang, Liheng Lou, Kai Tang, Wensong Wang, Yuanjin Zheng","doi":"10.1109/IMBioC52515.2022.9790235","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790235","url":null,"abstract":"This paper presents a chip-based Ku-band coherent frequency modulated continuous wave (FMCW) radar sensing platform operating at the 15-GHz center frequency for realizing telemedicine and vital signs monitoring at the edge with the specifically designed antenna and interferometric phase analysis algorithm. A configurable chirp synthesizer is implemented with a direct digital synthesizer (DDS) for ensuring the chirp signal generation with high phase accuracy and excellent power efficiency. Empowered by the specifically designed antenna with high gain and phase-domain processing, accurate vital signs monitoring can be achieved. Fabricated in a 65-nm CMOS process, the prototype radar chip operates with smaller than 250-mW at a 1.2-V power supply, which ensured the low-power operation for long-term edge health status monitoring. Experiments on discerning vital signs were conducted based on the FMCW radar chip platform with a specific antenna and DE-10 edge processing unit. Further, the radar platform can be integrated into a more compact level with AI-based signal processing implemented on-chip to attain more efficient performance on multimodal health status monitoring at the edge with enhanced energy efficiency.","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":"122289258","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-Band Transmission Surfaces With Small Frequency Ratio and Sharp Skirt Frequency Response","authors":"Bin Wang, Wen Wu, Z. Zong, D. Fang","doi":"10.1109/imbioc52515.2022.9790156","DOIUrl":"https://doi.org/10.1109/imbioc52515.2022.9790156","url":null,"abstract":"Two dual-band transmission surfaces with/without polarization conversion are proposed. They have a small frequency ratio and sharp skirt frequency response. Both configurations consist of a receiving antenna, a back-loaded radio frequency circuit (BLRFC), and a transmitting antenna. The receiving/transmitting antenna is a tightly coupled dipole antenna (TCDA) array and the BLRFC is a dual-band band-pass filter with a small frequency ratio. Two transmission bands are achieved, one is 5.15 to 5.4 GHz, the other is 5.75 to 5.95 GHz. The center frequency of each operation band is 5.28 GHz and 5.85 GHz, respectively, and the frequency ratio between the upper and lower bands is 1.1. Both bands have a sharp skirt frequency response. The dual-band transmission surfaces with/without polarization conversion characteristics can be used as shielding walls in Intensive Care Units (ICU) to shield signals except those in the pass-band.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"40 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":"123292229","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}
Xinlong Wen, Xin Song, Zhi Zheng, Bo Wang, Yongxin Guo
{"title":"A Multi-class Dataset Expansion Method for Wi-Fi-Based Fall Detection","authors":"Xinlong Wen, Xin Song, Zhi Zheng, Bo Wang, Yongxin Guo","doi":"10.1109/IMBioC52515.2022.9790259","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790259","url":null,"abstract":"Nowadays, with the wide commercial use of Wi-Fi technology, the use of Wi-Fi channel state information (CSI) for fall detection has gradually become a hot research field. However, many existing fall detection systems based on Wi-Fi lack accurate action classification because of the high acquisition cost of complex action datasets. They cannot accurately identify complex fall actions, and have a high false positive rate. This paper proposes a multi-class dataset expansion method for different fall actions and non-fall actions, which classifies the movements in detail according to fall speed and other limb movements and expands the scale of the data set by dividing and reorganizing the limited data. As a result, the proposed method reaches a recognition accuracy of 91.6%.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"108 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":"127953794","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}
Wenying Li, Kecheng Zhang, Maokun Li, Fan Yang, Shenheng Xu
{"title":"A Three-dimensional Phantom for Evaluating the Performance of Electrical Impedance Tomography System","authors":"Wenying Li, Kecheng Zhang, Maokun Li, Fan Yang, Shenheng Xu","doi":"10.1109/IMBioC52515.2022.9790192","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790192","url":null,"abstract":"Electrical impedance tomography is an imaging technology based on the impedance characteristics of the measured object. In this paper, a three-dimensional phantom is studied to verify and evaluate 3D EIT systems. The conductivity distribution can be changed by tuning the resistance values. Simulation results show that the proposed phantom can be used for 3D EIT imaging.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"28 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":"127301258","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}
E. Lambert, Elodie Barthout, R. Manczak, S. Saada, M. Mathonnet, B. Bessette, C. Dalmay, F. Lalloué, A. Pothier
{"title":"Ultra High Frequency Dielectrophoresis Manipulation to Monitor the Kinetics of Glioblastoma Cells Stemness Phenotype Acquirement","authors":"E. Lambert, Elodie Barthout, R. Manczak, S. Saada, M. Mathonnet, B. Bessette, C. Dalmay, F. Lalloué, A. Pothier","doi":"10.1109/IMBioC52515.2022.9790189","DOIUrl":"https://doi.org/10.1109/IMBioC52515.2022.9790189","url":null,"abstract":"This paper demonstrates the great potential of Ultra-High Frequency dielectrophoresis (UHF-DEP) to monitor the kinetics of glioblastoma (GBM) cells stemness phenotype transformation. Above 20 MHz, the method is able to probe the intracellular content and to be sensitive to its conductivity and permittivity values. U87-MG GBM cell line was cultured in different conditions in order to induce a differentiation gradient phenotype among the cell population. Using the presented characterization technic, it is shown than undifferentiated cells can be discriminated.","PeriodicalId":305829,"journal":{"name":"2022 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"6 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":"123698931","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}