Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756212
W. Lei, Yong-xin Guo
This paper presents a small-size, dual-band implantable loop antenna operating in the medical implant communications service (MICS) band (402-405 MHz) and the Industrial, Scientific and Medical service (ISM) band (902-928 MHz). Biocompatible material of SU8 is employed in coating since the antenna is designed to work in human body. By using the meandering strategy, the size of the proposed antenna can be significantly miniaturized compared with the state-of-art ones at the operating bands (radius of 5.5 mm and height of 0.645 mm). The simulated bandwidths are 105% and 20% in MICS and ISM bands, respectively. The SAR and total efficiency are also simulated in CST human model and show excellent performances.
{"title":"A miniaturized implantable loop antenna at MICS and ISM bands for biomedical applications","authors":"W. Lei, Yong-xin Guo","doi":"10.1109/IMWS-BIO.2013.6756212","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756212","url":null,"abstract":"This paper presents a small-size, dual-band implantable loop antenna operating in the medical implant communications service (MICS) band (402-405 MHz) and the Industrial, Scientific and Medical service (ISM) band (902-928 MHz). Biocompatible material of SU8 is employed in coating since the antenna is designed to work in human body. By using the meandering strategy, the size of the proposed antenna can be significantly miniaturized compared with the state-of-art ones at the operating bands (radius of 5.5 mm and height of 0.645 mm). The simulated bandwidths are 105% and 20% in MICS and ISM bands, respectively. The SAR and total efficiency are also simulated in CST human model and show excellent performances.","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":"7 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":"89016996","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756254
M. Yuce
The term body sensor refers to a variety of biomedical devices operating within, on or at close proximity to the human body. Some examples are pacemakers, implantable defibrillators, bionic eye, bionic ear, swallowable devices like wireless capsule, neural recording and stimulation devices and wearable sensor devices in telemedicine for physiological signal sensing and monitoring. More body sensor devices will be developed in the future to undertake various body tasks and to diagnose chronic diseases. These devices are made wireless in order to increase patient comfort, to enable patient mobility, and to make the device robust. A wireless system is necessary for information transfer from these devices placed on or inside the body for purpose of controlling and monitoring. A wireless link designed for body sensor devices should form an intelligent communication network such as a body area network in order to work efficiently and safely in the same environment. This article presents recent sensor nodes developed for such medical networks.
{"title":"Recent wireless body sensors: Design and implementation","authors":"M. Yuce","doi":"10.1109/IMWS-BIO.2013.6756254","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756254","url":null,"abstract":"The term body sensor refers to a variety of biomedical devices operating within, on or at close proximity to the human body. Some examples are pacemakers, implantable defibrillators, bionic eye, bionic ear, swallowable devices like wireless capsule, neural recording and stimulation devices and wearable sensor devices in telemedicine for physiological signal sensing and monitoring. More body sensor devices will be developed in the future to undertake various body tasks and to diagnose chronic diseases. These devices are made wireless in order to increase patient comfort, to enable patient mobility, and to make the device robust. A wireless system is necessary for information transfer from these devices placed on or inside the body for purpose of controlling and monitoring. A wireless link designed for body sensor devices should form an intelligent communication network such as a body area network in order to work efficiently and safely in the same environment. This article presents recent sensor nodes developed for such medical networks.","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":"69 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":"79556511","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756150
M. Li, Di-Xiang Yin, Long Wang, J. L. Li
A microstrip spiral antenna with sharpening and a bi-conical over sleeve antenna have been proposed for noninvasive superficial layer breast cancer and invasive breast cancer thermotherapies of deep-located breast tumors, respectively. Some measured results are obtained by comparing results of the microwave equivalent phantom model and the swine. A process for the breast cancer treatment is also proposed and some useful results are obtained, where temperature measurement and phantom model manufacture are established.
{"title":"Preliminary experimental investigations on near field breast cancer thermotherapy","authors":"M. Li, Di-Xiang Yin, Long Wang, J. L. Li","doi":"10.1109/IMWS-BIO.2013.6756150","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756150","url":null,"abstract":"A microstrip spiral antenna with sharpening and a bi-conical over sleeve antenna have been proposed for noninvasive superficial layer breast cancer and invasive breast cancer thermotherapies of deep-located breast tumors, respectively. Some measured results are obtained by comparing results of the microwave equivalent phantom model and the swine. A process for the breast cancer treatment is also proposed and some useful results are obtained, where temperature measurement and phantom model manufacture are established.","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":"81 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":"77318523","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756253
Wanmei Zhao, W. Che, Y. Chang, Y. Juan
Interstitial microwave hyperthermia has been used for the treatment of small-size liver tumors. Different liver tumors of various shapes and sizes have been treated by using monopole arrays with different temperature patterns. Generally different temperature patterns can be achieved through variation of the input power and the heating time. In this paper, a method to control the temperature pattern of the monopole array by changing the driving phase of the antennas is proposed.
{"title":"Temperature pattern control within a monopole array used for interstitial microwave hyperthermia","authors":"Wanmei Zhao, W. Che, Y. Chang, Y. Juan","doi":"10.1109/IMWS-BIO.2013.6756253","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756253","url":null,"abstract":"Interstitial microwave hyperthermia has been used for the treatment of small-size liver tumors. Different liver tumors of various shapes and sizes have been treated by using monopole arrays with different temperature patterns. Generally different temperature patterns can be achieved through variation of the input power and the heating time. In this paper, a method to control the temperature pattern of the monopole array by changing the driving phase of the antennas is proposed.","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":"1 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":"83652616","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756214
Zihao Chen, Yue Ping Zhang
Future broadband mobile communication networks such as 5G and beyond will most likely use millimeter-wave frequencies. There is, however, little knowledge about millimeter-wave antenna design for cellular mobile devices. This paper reports a microstrip grid array antenna on an FR4 substrate in a standard PCB technology. It is shown that the microstrip grid array antenna covers a footprint of 15×15 mm2, radiates a fixed beam in the boresight direction, and achieves the 10-dB impedance bandwidth of 7.16 GHz from 23.86 to 31.02 GHz and the 3-dB gain bandwidth of 4.79 GHz from 27.54 to 32.33 GHz with the maximal realized gain of 12.66 dBi at 29.2 GHz.
{"title":"FR4 PCB grid array antenna for millimeter-wave 5G mobile communications","authors":"Zihao Chen, Yue Ping Zhang","doi":"10.1109/IMWS-BIO.2013.6756214","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756214","url":null,"abstract":"Future broadband mobile communication networks such as 5G and beyond will most likely use millimeter-wave frequencies. There is, however, little knowledge about millimeter-wave antenna design for cellular mobile devices. This paper reports a microstrip grid array antenna on an FR4 substrate in a standard PCB technology. It is shown that the microstrip grid array antenna covers a footprint of 15×15 mm2, radiates a fixed beam in the boresight direction, and achieves the 10-dB impedance bandwidth of 7.16 GHz from 23.86 to 31.02 GHz and the 3-dB gain bandwidth of 4.79 GHz from 27.54 to 32.33 GHz with the maximal realized gain of 12.66 dBi at 29.2 GHz.","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":"30 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":"87176054","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756162
Jing Ma, Sheng Sun, Changjun Liu
In this paper, the wireless power transfer link with metallic plates is studied. By enforcing the boundary conditions along metallic surface, the magnetic fields are well confined between two plates and its flux focusing can be also improved. Meanwhile, the large metallic plates can also help to achieve higher transfer efficiency of the wireless power transfer link. Based on the filter theory, these enhanced field intensity effectively enlarge the dynamic range of coupling degree, thus improving the efficiency of the energy transmission. Finally, a 40.68MHz wireless transfer link with the highest measured efficiency of 86.56% is obtained and demonstrated.
{"title":"Study of wireless power transfer link with metallic plates","authors":"Jing Ma, Sheng Sun, Changjun Liu","doi":"10.1109/IMWS-BIO.2013.6756162","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756162","url":null,"abstract":"In this paper, the wireless power transfer link with metallic plates is studied. By enforcing the boundary conditions along metallic surface, the magnetic fields are well confined between two plates and its flux focusing can be also improved. Meanwhile, the large metallic plates can also help to achieve higher transfer efficiency of the wireless power transfer link. Based on the filter theory, these enhanced field intensity effectively enlarge the dynamic range of coupling degree, thus improving the efficiency of the energy transmission. Finally, a 40.68MHz wireless transfer link with the highest measured efficiency of 86.56% is obtained and demonstrated.","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":"140 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74901474","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756144
M. Kozlov, R. Turner
We provide recommendations for simulation-driven design and work-flow for magnetic resonance imaging RF transmit-coil arrays. To enable final decisions on array construction, accurate knowledge is needed of how the array transmit and safety measures depend on the array geometry, RF component losses, and the tuning and excitation conditions. If strong evidence is provided that array safety excitation efficiency is insensitive to tuning condition, head geometry and head position, the safety margin can be reduced, allowing shorter scan times.
{"title":"Simulation-driven design and optimization of RF coil arrays for MRI","authors":"M. Kozlov, R. Turner","doi":"10.1109/IMWS-BIO.2013.6756144","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756144","url":null,"abstract":"We provide recommendations for simulation-driven design and work-flow for magnetic resonance imaging RF transmit-coil arrays. To enable final decisions on array construction, accurate knowledge is needed of how the array transmit and safety measures depend on the array geometry, RF component losses, and the tuning and excitation conditions. If strong evidence is provided that array safety excitation efficiency is insensitive to tuning condition, head geometry and head position, the safety margin can be reduced, allowing shorter scan times.","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":"70 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":"73670221","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756241
Jenshan Lin
This paper reviews the technology development history of noncontact measurement of respiration and heartbeat using microwave techniques, and shows how the technology evolved into small micro-radars. Through understandings of its detection mechanism and advances in hardware and software, the once bulky bench-top systems can be miniaturized while achieving better performance. The evolution of system architectures, detection methods, and choice of frequencies are reviewed. Vital-sign micro-radar sensors implemented in complementary metal-oxide-semiconductor (CMOS) and system-in-package technologies at the 5.8-GHz and 60-GHz industrial, scientific, and medical (ISM) bands are presented. The noncontact vital sign micro-radars can be used for various potential applications including healthcare, veterinary medicine, and biological research.
{"title":"Noncontact measurement of cardiopulmonary movements: A review of system architectures and the path to micro-radars","authors":"Jenshan Lin","doi":"10.1109/IMWS-BIO.2013.6756241","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756241","url":null,"abstract":"This paper reviews the technology development history of noncontact measurement of respiration and heartbeat using microwave techniques, and shows how the technology evolved into small micro-radars. Through understandings of its detection mechanism and advances in hardware and software, the once bulky bench-top systems can be miniaturized while achieving better performance. The evolution of system architectures, detection methods, and choice of frequencies are reviewed. Vital-sign micro-radar sensors implemented in complementary metal-oxide-semiconductor (CMOS) and system-in-package technologies at the 5.8-GHz and 60-GHz industrial, scientific, and medical (ISM) bands are presented. The noncontact vital sign micro-radars can be used for various potential applications including healthcare, veterinary medicine, and biological research.","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":"42 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":"84228444","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756210
Li Gao, Xiu Yin Zhang
A miniaturized bandpass filter with wide stopband is presented in this letter. It utilizes two spiral quarter-wavelength resonators for size reduction. By adding extra lines to the feeding structure, mismatching at harmonic frequencies can be realized and wide stopband can be obtained. To verify the proposed idea, an experimental filter is implemented. The measured results show that better than 25 dB rejection levels in the stopband up to 6.8f0 are achieved. The circuit area of the filter is only 0.1λg×0.1λg, where λg is the guided wavelength at the operating frequency of 1 GHz.
{"title":"Novel miniaturized bandpass filter with wide stopband using spiral resonator","authors":"Li Gao, Xiu Yin Zhang","doi":"10.1109/IMWS-BIO.2013.6756210","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756210","url":null,"abstract":"A miniaturized bandpass filter with wide stopband is presented in this letter. It utilizes two spiral quarter-wavelength resonators for size reduction. By adding extra lines to the feeding structure, mismatching at harmonic frequencies can be realized and wide stopband can be obtained. To verify the proposed idea, an experimental filter is implemented. The measured results show that better than 25 dB rejection levels in the stopband up to 6.8f<sub>0</sub> are achieved. The circuit area of the filter is only 0.1λ<sub>g</sub>×0.1λ<sub>g</sub>, where λ<sub>g</sub> is the guided wavelength at the operating frequency of 1 GHz.","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":"82038633","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}
Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756190
Zhihua Wang, Hanjun Jiang
A system architecture for the lifetime recording of human being pathological features is proposed. The system is composed of a potable base station (PBS), a wireless intelligent sensing/intervention devices (SID) as well as a remote data center for data processing and storage. An intelligent body sound sensor is chosen for discussion for the reason that some key pathological features could be reflected by human body sounds, such as the cardiopulmonary tones, the bowel sounds as well as the fetal heart sounds. The design considerations of PBS with a dedicated monolithic transceiver are addressed for the communication between PBS and SID. A application prototype using the proposed technology for tracing the fetal heart rate by monitoring a pregnant woman is presented.
{"title":"Wireless intelligent sensor system for fetal heart rate tracing through body sound monitoring on a pregnant woman","authors":"Zhihua Wang, Hanjun Jiang","doi":"10.1109/IMWS-BIO.2013.6756190","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756190","url":null,"abstract":"A system architecture for the lifetime recording of human being pathological features is proposed. The system is composed of a potable base station (PBS), a wireless intelligent sensing/intervention devices (SID) as well as a remote data center for data processing and storage. An intelligent body sound sensor is chosen for discussion for the reason that some key pathological features could be reflected by human body sounds, such as the cardiopulmonary tones, the bowel sounds as well as the fetal heart sounds. The design considerations of PBS with a dedicated monolithic transceiver are addressed for the communication between PBS and SID. A application prototype using the proposed technology for tracing the fetal heart rate by monitoring a pregnant woman is 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":"51 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":"84719130","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}
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