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2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)最新文献

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Multi-channel transmit/receive RF coil arrays for cardiac MRI at ultrahigh fields: Design, validation and clinical application 用于心脏MRI超高场多通道发射/接收射频线圈阵列:设计、验证和临床应用
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756145
T. Niendorf
{"title":"Multi-channel transmit/receive RF coil arrays for cardiac MRI at ultrahigh fields: Design, validation and clinical application","authors":"T. Niendorf","doi":"10.1109/IMWS-BIO.2013.6756145","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756145","url":null,"abstract":"This work focuses on explorations into human magnetic resonance (MR) at ultrahigh magnetic fields (B0≥7.0 Tesla, f≥298 MHz). Current trends in enabling multi-channel radiofrequency (RF) technology tailored for MR in the low wavelength regime are presented with the ultimate goal to attain clinically acceptable image quality. Validation of RF coil performance, mapping and shimming of transmission fields together with RF power deposition considerations are presented. Early applications of cardiovascular MR at 7.0 T are provided and their clinical implications are discussed. A concluding section ventures a glance beyond the horizon and explores future directions of RF coil developments.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"11 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87632122","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
Magnetically mediated thermoacoustic imaging and technical considerations on its coil design 磁介导热声成像及其线圈设计的技术考虑
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756168
Feng Xiaohua, Gao Fei, Zheng Yuanjin
{"title":"Magnetically mediated thermoacoustic imaging and technical considerations on its coil design","authors":"Feng Xiaohua, Gao Fei, Zheng Yuanjin","doi":"10.1109/IMWS-BIO.2013.6756168","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756168","url":null,"abstract":"Magnetically mediated thermoacoustic imaging exploits the electromagnetic spectrum of radio frequency magnetic field under 20 MHz to perform thermoacoustic imaging, which can provide deeper penetration than microwave or light irradiation. To achieve effective imaging, current implementation relies on magnetic resonance of the coil to deliver sufficiently strong magnetic field into conductive objects, including tissues. Different kind of coils can be utilized, which affects both the magnetic field distribution and the design of the resonance circuits. We investigated here those various coils and their implications for the imaging system. Preliminary thermoacoustic signal generation and imaging results are also presented.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"6 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90402842","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
Matching network to improve the transmission level of capacitive intra-body communication (IBC) channels 匹配网络提高容性体内通信(IBC)信道的传输水平
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756197
Linsheng Wu, J. Sakai, Hucheng Sun, Yong-xin Guo
{"title":"Matching network to improve the transmission level of capacitive intra-body communication (IBC) channels","authors":"Linsheng Wu, J. Sakai, Hucheng Sun, Yong-xin Guo","doi":"10.1109/IMWS-BIO.2013.6756197","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756197","url":null,"abstract":"The method of conjugate-image impedance is used to design the matching network for the capacitive intra-body communication channel. Narrow passbands around 20 MHz are observed in the measured responses of the matched cases, where the transmission levels are about 20 dB higher than the unmatched ones. The method versatility is also validated.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"131 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85617394","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: 7
A helical folded dipole antenna for medical implant communication applications 用于医疗植入通信应用的螺旋折叠偶极子天线
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756247
Basari, Dony Canisius Sirait, F. Zulkifli, E. Rahardjo
{"title":"A helical folded dipole antenna for medical implant communication applications","authors":"Basari, Dony Canisius Sirait, F. Zulkifli, E. Rahardjo","doi":"10.1109/IMWS-BIO.2013.6756247","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756247","url":null,"abstract":"Currently, most of implanted medical devices are using inductive coupling for communication, which leads to difficulty in transmitting medical data records for several meters range. In order for the implanted device is able to be used in longer range transmission, the device is wirelessly transmitted in the form of electromagnetic signals. This initiates us to study on a patient home monitoring system, in which the external devices such as portable equipments will provide a benefit for healthcare provider in accessing the important patient medical information via a networked connection. Because of this reason, an electrically small antenna for implantable devices is very essential components in monitoring systems to provide wirelessly communication between a patient and an access point. In this paper, a helical folded dipole antenna for an implantable device is proposed for wireless patient monitoring system. The implanted device is assumed to be applied by a syringe injection allowing to the device is simply injected into the human body. The proposed antenna is operated in UHF band 924 MHz, as a band of Indonesian RFID applications. The antenna is quite small in comparison to the band operation (ka≈0.08). Sufficient electrical performances are obtained such as reflection coefficient, impedance bandwidth, radiation pattern and gain. According to the link budget analysis, the proposed antenna has adequate gain within 10m transmission range by 225 MHz bandwidth (VSWR ≤ 2).","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"5 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74416491","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: 10
A fully-integrated low-power high-coexistence 2.4-GHz ZigBee transceiver for biomedicai applications 用于生物医学应用的全集成低功耗高共存2.4 ghz ZigBee收发器
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756235
J. Gil, Ji-Hoon Kim, Chun-Suk Kim, Chulhyun Park, Jungsu Park, Hyejin Park, Hyeji Lee, Sung-Jae Lee, Young-Ho Jang, M. Koo, Y. W. Kwon, I. Song
{"title":"A fully-integrated low-power high-coexistence 2.4-GHz ZigBee transceiver for biomedicai applications","authors":"J. Gil, Ji-Hoon Kim, Chun-Suk Kim, Chulhyun Park, Jungsu Park, Hyejin Park, Hyeji Lee, Sung-Jae Lee, Young-Ho Jang, M. Koo, Y. W. Kwon, I. Song","doi":"10.1109/IMWS-BIO.2013.6756235","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756235","url":null,"abstract":"The ZigBee technology based on IEEE 802.15.4 is widespread use of biomedical applications providing wireless networks. A fully integrated low-power 2.4GHz ZigBee transceiver implemented in CMOS technology is demonstrated. It has RF and analog front-ends, a frequency synthesizer, and digital modulator and demodulator compliant to IEEE 802.15.4. The direct-modulation using fractional-N synthesizer is adopted as transmitter architecture. The transmitter provides high output power of +9dBm and excellent EVM of 5.1%. The direct conversion architecture uses in receiver. Receiver sensitivity is -97dBm. Current consumption for continuous TX transmission at +9dBm output power is 28.2mA and for continuous RX reception is 16mA. Excellence coexistence performance is presented by studying WLAN interferer rejection.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"80 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80963734","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
Feasibility study on ambient RF energy harvesting for wireless sensor network 无线传感器网络环境射频能量采集的可行性研究
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756226
T. B. Lim, Ngai Meng. Lee, B. Poh
{"title":"Feasibility study on ambient RF energy harvesting for wireless sensor network","authors":"T. B. Lim, Ngai Meng. Lee, B. Poh","doi":"10.1109/IMWS-BIO.2013.6756226","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756226","url":null,"abstract":"RF energy harvesting holds a promising future for generating a small amount of energy to potentially power on a low power device such as wireless sensor network especially in an urban country like Singapore. Due to path loss and restriction on permissible transmission power; the RF power available to the input of the RF energy harvesting system is relative low. In this work, we present a study of ambient RF energy harvesting. We also explore to determine whether another emerging technology wireless power transfer can be integrated with RF energy harvesting. A measurement of the ambient RF power density on GSM 900 and GSM 1800 bands in Nanyang Polytechnic of Singapore is presented. From our conclusion, the harvested energy is not able to directly power the wireless sensor network; however the harvested energy can be stored in a super-capacitor and over some time it can be used to power on the wireless sensor network. So, is RF energy harvesting ever going to become a practical reality? The answer is a cautious yes.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"16 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79657403","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: 59
Antenna polarization mismatch in BAN communications BAN通信中天线极化失配
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756209
K. Y. Yazdandoost, R. Miura
{"title":"Antenna polarization mismatch in BAN communications","authors":"K. Y. Yazdandoost, R. Miura","doi":"10.1109/IMWS-BIO.2013.6756209","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756209","url":null,"abstract":"In any wireless communications, antennas and propagation are key concerns. Their importance becomes more significant for in/on-body wireless applications. Body Area Network (BAN) links lead to propagation problems considerably different from free space wireless communications due to presents of body tissues, body movements, and enormous figure of body poses. Therefore, to ensure the efficient performance of body area wireless communication the electromagnetic wave propagation need to be characterized and modeled for reliable communication system with respect to environment, antenna, body postures, and body movements. This paper discusses on polarization mismatch due to body movements between on-body transmitting antenna and off-body receiving antenna.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"60 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82546961","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: 21
A non-invasive lung monitoring sensor with integrated body-area network 一种集成体域网络的无创肺监测传感器
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756243
S. Salman, Zheyu Wang, A. Kiourti, E. Topsakal, J. Volakis
{"title":"A non-invasive lung monitoring sensor with integrated body-area network","authors":"S. Salman, Zheyu Wang, A. Kiourti, E. Topsakal, J. Volakis","doi":"10.1109/IMWS-BIO.2013.6756243","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756243","url":null,"abstract":"This paper discusses the design and testing of a new robust system for in-situ continuous monitoring of the lung's condition. The system is composed of a body worn medical sensor with an accompanying wireless body area network (BAN) for remote health monitoring. The lung sensor consists of 17 electrodes, and operates at 40MHz. It aims to approximate the dielectric constant of the underlying lung tissue independent of variations in the outer layers (skin, fat, muscle and bone). Concurrently, the wireless BAN is used to transmit the measured dielectric constant to a mobile device via Bluetooth for continuous remote healthcare monitoring. In this paper, we present the design and experimental validation of the proposed lung sensor integrated with wireless BAN data link.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"22 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86510486","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 overview of cancer treatment by terahertz radiation 太赫兹辐射治疗癌症的概述
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756170
Mengxi Wang, Guohui Yang, Wan-lu Li, Qun Wu
{"title":"An overview of cancer treatment by terahertz radiation","authors":"Mengxi Wang, Guohui Yang, Wan-lu Li, Qun Wu","doi":"10.1109/IMWS-BIO.2013.6756170","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756170","url":null,"abstract":"Cancer claimed the death of over 7.6 million people each year all over the world. Many attempts have being practiced in clinical applications, yet some new technologies are believed to make up for the shortcomings of existing methods. Some latest advances have aroused interests in terahertz imaging and the biological effect as promising diagnostic methods for cancer. This review, however, taps into the biological effects of terahertz radiation as well as the possible mechanism to reveal the potentials and prospects of THz in cancer treatment.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"121 4 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88766595","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: 15
Efficient low-frequency integral equation solver for wireless power transfer modeling 无线电力传输建模的高效低频积分方程求解器
2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI: 10.1109/IMWS-BIO.2013.6756141
Yin Li, Sheng Sun
{"title":"Efficient low-frequency integral equation solver for wireless power transfer modeling","authors":"Yin Li, Sheng Sun","doi":"10.1109/IMWS-BIO.2013.6756141","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756141","url":null,"abstract":"In this paper, the wireless power transfer system based on magnetic-coupled resonators is modeled and optimized by using low-frequency integral equation solver. For the low-frequency transfer system, the mesh size after discretization is usually much smaller than the wavelength. Hence, the low-frequency solvers are proposed to model this kind of structures with tiny meshes. After the spiral resonators are determined at specific frequency, we only need to optimize the distance between resonators and two loops. The numerical results show that we are no need to re-mesh the whole transfer system during the distance searching procedure, and the optimized distance can be easily obtained.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"23 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85821543","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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