Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756213
Jinhong Guo, Yu Chen, Yuejun Kang
Surface Acoustic Wave (SAW) has emerged as a powerful technique for kinds of application, such as gas sensor, on-chip manipulation of microparticles or biological cells. In this paper, we present a numerical simulation and experimental study of standing surface acoustic wave (SSAW) induced acoustophoresis to assemble the particle samples in a microchannel. The simulation of the SAW is implemented by coupling the Maxwell equation and Newton equation. Once the acoustic wave along the piezosubstrate surface is obtained, the acoustophoresis force induced by surface standing acoustic wave (SSAW) is able to be derived. The SSAW generated by two parallel interdigital transducers (IDTs) which are excited by the radio frequency signal induce the acoustic radiation force to propel particles toward the pressure node. The assembling time also can be tunable by controlling the applied RF power. The numerical model and the experiment result can provide the critical guidance for the design of focusing component by SSAW which can significantly benefit the development of future on-chip flow cytometry.
{"title":"RF-activated surface standing acoustic wave for on-chip controllably aligning of bio-microparticles","authors":"Jinhong Guo, Yu Chen, Yuejun Kang","doi":"10.1109/IMWS-BIO.2013.6756213","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756213","url":null,"abstract":"Surface Acoustic Wave (SAW) has emerged as a powerful technique for kinds of application, such as gas sensor, on-chip manipulation of microparticles or biological cells. In this paper, we present a numerical simulation and experimental study of standing surface acoustic wave (SSAW) induced acoustophoresis to assemble the particle samples in a microchannel. The simulation of the SAW is implemented by coupling the Maxwell equation and Newton equation. Once the acoustic wave along the piezosubstrate surface is obtained, the acoustophoresis force induced by surface standing acoustic wave (SSAW) is able to be derived. The SSAW generated by two parallel interdigital transducers (IDTs) which are excited by the radio frequency signal induce the acoustic radiation force to propel particles toward the pressure node. The assembling time also can be tunable by controlling the applied RF power. The numerical model and the experiment result can provide the critical guidance for the design of focusing component by SSAW which can significantly benefit the development of future on-chip flow cytometry.","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":"34 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":"86601989","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.2013.6756159
Songsong Zhang, Liang Lou, Tao Wang, W. Tsang, D. Kwong, Chengkuo Lee
Various Nanoelectromechanical Systems (NEMS) sensors using piezoresistive silicon nanowires (SiNWs) as the sensing elements for pressure, strain and flow detection are reported. Measurement results reveal both excellent scalability and sensing stability for SiNWs based NEMS devices. Additionally, the new ultracompact pressure sensor with novel micro-grooved diaphragm structure is reported for low pressure range measurement, which leads to potential bio-medical applications.
{"title":"Characterizations of silicon nanowires (SiNWs) embedded NEMS sensors and for potential biomedical applications","authors":"Songsong Zhang, Liang Lou, Tao Wang, W. Tsang, D. Kwong, Chengkuo Lee","doi":"10.1109/IMWS-BIO.2013.6756159","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756159","url":null,"abstract":"Various Nanoelectromechanical Systems (NEMS) sensors using piezoresistive silicon nanowires (SiNWs) as the sensing elements for pressure, strain and flow detection are reported. Measurement results reveal both excellent scalability and sensing stability for SiNWs based NEMS devices. Additionally, the new ultracompact pressure sensor with novel micro-grooved diaphragm structure is reported for low pressure range measurement, which leads to potential bio-medical applications.","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":"25 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":"84556595","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.2013.6756228
Zhenguo Liu, Yong-xin Guo
A dual band low profile antenna for wireless body centric communications is presented in this paper. It is composed of a zeroth-order loop loaded periodically with mu-negative transmission line (MNG-TL) and a circular patch located in the center of loop. The MNG-TL loop based on the fundamental infinite wavelength property allows current along the loop to remain in phase and same magnitude so that a highly efficient and miniature loop antenna with omni-directional pattern in azimuth plane at low frequency band for on-body communications is generated. On the other hand, a unidirectional pattern in elevation plane at upper frequency band for off-body communications is also obtained by circular patch simultaneously. In order to improve the pattern in azimuth plane, a split ring resonator (SRR) element is used to direct the electromagnetic field propagation. By placing a single SRR at the near field of the loop in different location, the mechanic of function between SRR and loop is also presented.
{"title":"Dual band low profile antenna for body centric communications with a split ring resonator","authors":"Zhenguo Liu, Yong-xin Guo","doi":"10.1109/IMWS-BIO.2013.6756228","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756228","url":null,"abstract":"A dual band low profile antenna for wireless body centric communications is presented in this paper. It is composed of a zeroth-order loop loaded periodically with mu-negative transmission line (MNG-TL) and a circular patch located in the center of loop. The MNG-TL loop based on the fundamental infinite wavelength property allows current along the loop to remain in phase and same magnitude so that a highly efficient and miniature loop antenna with omni-directional pattern in azimuth plane at low frequency band for on-body communications is generated. On the other hand, a unidirectional pattern in elevation plane at upper frequency band for off-body communications is also obtained by circular patch simultaneously. In order to improve the pattern in azimuth plane, a split ring resonator (SRR) element is used to direct the electromagnetic field propagation. By placing a single SRR at the near field of the loop in different location, the mechanic of function between SRR and loop is 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":"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":"76626166","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.2013.6756195
K. Agarwal, Yong-xin Guo, B. Salam, L. Albert
A near-endfire, artificial magnetic conductor (AMC) backed wearable antenna is proposed in this paper for wireless body area networks operating in the 2.4 GHz ISM band. The bidirectional-endfire radiation pattern of Yagi-Uda latex antenna is changed to off-axis near-endfire radiation using an AMC reflector also printed on latex. The antenna is separated from upper AMC surface using flexible Styrofoam of thickness 0.044λo at 2.4 GHz for best compromise between keeping the antenna structure low-profile and achieving an off-axis beam tilt radiation of ~74° towards end-fire direction. 0° reflection phase AMC surface is proposed to reduce downward radiations and consequently improve the antenna tolerance to positioning on the human body, and reduce the specific absorption rate (SAR) level for 2.4 GHz frequency band gap. Antenna performance in terms of return loss, radiation efficiency, extent of frequency detuning, gain and SAR level are studied for free space as well as CST MWS tissue-equivalent voxel model for proposed antenna design. The Yagi-Uda antenna backed with AMC reflector demonstrates the measured return loss bandwidth of 40 MHz (2.43-2.47 GHz) and gain of -0.2 dBi in endfire direction with improved on-body radiation efficiency of 74.82 % and reduced peak SAR level of 1.24 W/kg for 10 g tissue for the compact overall flexible latex antenna volume of 0.4λo × 0.4λo × 0.076λo at 2.4 GHz.
{"title":"Latex based near-endfire wearable antenna backed by AMC surface","authors":"K. Agarwal, Yong-xin Guo, B. Salam, L. Albert","doi":"10.1109/IMWS-BIO.2013.6756195","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756195","url":null,"abstract":"A near-endfire, artificial magnetic conductor (AMC) backed wearable antenna is proposed in this paper for wireless body area networks operating in the 2.4 GHz ISM band. The bidirectional-endfire radiation pattern of Yagi-Uda latex antenna is changed to off-axis near-endfire radiation using an AMC reflector also printed on latex. The antenna is separated from upper AMC surface using flexible Styrofoam of thickness 0.044λo at 2.4 GHz for best compromise between keeping the antenna structure low-profile and achieving an off-axis beam tilt radiation of ~74° towards end-fire direction. 0° reflection phase AMC surface is proposed to reduce downward radiations and consequently improve the antenna tolerance to positioning on the human body, and reduce the specific absorption rate (SAR) level for 2.4 GHz frequency band gap. Antenna performance in terms of return loss, radiation efficiency, extent of frequency detuning, gain and SAR level are studied for free space as well as CST MWS tissue-equivalent voxel model for proposed antenna design. The Yagi-Uda antenna backed with AMC reflector demonstrates the measured return loss bandwidth of 40 MHz (2.43-2.47 GHz) and gain of -0.2 dBi in endfire direction with improved on-body radiation efficiency of 74.82 % and reduced peak SAR level of 1.24 W/kg for 10 g tissue for the compact overall flexible latex antenna volume of 0.4λo × 0.4λo × 0.076λo at 2.4 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":"78 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":"91260927","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.2013.6756237
J. Ha, S. Jung, M. Park, K. Lee, Y. Eo
A fully integrated 3-5 GHz CMOS UWB RF transceiver for wireless body area network (WBAN) is presented with the textile antenna in this paper. To achieve the low power and low complexity, OOK receiver topology and the digitally synthesized impulse generator are employed. For the rejection of the undesired interferers below 2.4 GHz, the tunable RF notch filter is integrated and the measured sensitivity shows 10 dB improvement of the sensitivity coexistent with the -30 dBm / 2.4 GHz interference. The transmitted UWB signal is generated in digital circuits, and both of the carrier frequency and bandwidth can be tunable. The measured energy efficiency of transmitter and the receiver sensitivity are 20.6 pJ/bit and -65 dBm, respectively. The measured maximum distance of communication is 1.5 m with the textile antenna in LOS channel.
{"title":"A fully integrated 3–5 GHz UWB RF transceiver for WBAN applications","authors":"J. Ha, S. Jung, M. Park, K. Lee, Y. Eo","doi":"10.1109/IMWS-BIO.2013.6756237","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756237","url":null,"abstract":"A fully integrated 3-5 GHz CMOS UWB RF transceiver for wireless body area network (WBAN) is presented with the textile antenna in this paper. To achieve the low power and low complexity, OOK receiver topology and the digitally synthesized impulse generator are employed. For the rejection of the undesired interferers below 2.4 GHz, the tunable RF notch filter is integrated and the measured sensitivity shows 10 dB improvement of the sensitivity coexistent with the -30 dBm / 2.4 GHz interference. The transmitted UWB signal is generated in digital circuits, and both of the carrier frequency and bandwidth can be tunable. The measured energy efficiency of transmitter and the receiver sensitivity are 20.6 pJ/bit and -65 dBm, respectively. The measured maximum distance of communication is 1.5 m with the textile antenna in LOS channel.","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":"73941613","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.2013.6756221
Wanlan Yang, Kaixue Ma, K. Yeo, W. M. Lim, Z. Kong
This paper presents the design of a low profile dual-band (on- / off-body modes) planar antenna in meandered shape with microstrip line feed for biomedical applications. The antenna is designed to operate in the ZigBee dual band 868-928 MHz and 2.4-2.5 GHz respectively. While the proposed antenna is simulated on direct surface of human skin model, it shows a good performance with the broad bandwidth for |S11| less than -10 dB. The antenna is designed with 50 Ω input port and on LTCC substrate (εr = 7.1, tanδ = 0.005) with miniaturized volume of 16.5 mm × 17 mm × 0.8 mm.
本文提出了一种低轮廓双频(开/离体模式)弯曲微带馈线平面天线的设计。该天线设计工作在ZigBee双频868-928 MHz和2.4-2.5 GHz。该天线在人体皮肤模型的直接表面上进行了仿真，结果表明该天线具有良好的性能，且带宽小于-10 dB。该天线设计为50 Ω输入端口，采用LTCC衬底(εr = 7.1, tanδ = 0.005)，小型化体积为16.5 mm × 17 mm × 0.8 mm。
{"title":"A compact dual-band meander-line antenna for biomedical applications","authors":"Wanlan Yang, Kaixue Ma, K. Yeo, W. M. Lim, Z. Kong","doi":"10.1109/IMWS-BIO.2013.6756221","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756221","url":null,"abstract":"This paper presents the design of a low profile dual-band (on- / off-body modes) planar antenna in meandered shape with microstrip line feed for biomedical applications. The antenna is designed to operate in the ZigBee dual band 868-928 MHz and 2.4-2.5 GHz respectively. While the proposed antenna is simulated on direct surface of human skin model, it shows a good performance with the broad bandwidth for |S11| less than -10 dB. The antenna is designed with 50 Ω input port and on LTCC substrate (εr = 7.1, tanδ = 0.005) with miniaturized volume of 16.5 mm × 17 mm × 0.8 mm.","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":"46 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":"73818218","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.2013.6756187
C. J. Leo, M. Raja, J. Minkyu
A compact high PSR Low Drop-Out (LDO) voltage regulator providing a peak load-current (IL) of 100μA is realized in 0.13μm CMOS 1P6M process. Ultra low-power operation is achieved for the power block by realizing a nano-power bandgap reference circuit whose total power consumption including LDO is only just 95nW for 1.2Vsupply. The resistor-less reference circuit with no external capacitor for LDO stability results in a very compact design occupying just 0.033 mm2. The proposed post-layout reference and LDO block consumes only 38nA and 41nA respectively, regulating output at 0.9V with a 1.2V supply.
{"title":"An ultra low-power capacitor-less LDO with high PSR","authors":"C. J. Leo, M. Raja, J. Minkyu","doi":"10.1109/IMWS-BIO.2013.6756187","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756187","url":null,"abstract":"A compact high PSR Low Drop-Out (LDO) voltage regulator providing a peak load-current (IL) of 100μA is realized in 0.13μm CMOS 1P6M process. Ultra low-power operation is achieved for the power block by realizing a nano-power bandgap reference circuit whose total power consumption including LDO is only just 95nW for 1.2Vsupply. The resistor-less reference circuit with no external capacitor for LDO stability results in a very compact design occupying just 0.033 mm2. The proposed post-layout reference and LDO block consumes only 38nA and 41nA respectively, regulating output at 0.9V with a 1.2V supply.","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":"75118015","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.2013.6756166
Yilong Lu, Yi Huang
Many research results on biological effects of cellular phone radiations agree that the main possible hazards are the thermal effects while some other results reveal that the thermal effects due to handsets radiation are negligible. Few can deny the fact and puzzle that some users did suffer from such symptoms as headaches due to cellular phones. This paper provides a potential cause or possible answer to the puzzle through analysis and understanding of GSM standards. We can also reveal that the low power low duty cycle pulsed train amplitude envelop modulation of GSM uplink signals is the main cause of such non-thermal biological effect for non-ionizing radiation.
{"title":"Why headache using GSM cellular phones?","authors":"Yilong Lu, Yi Huang","doi":"10.1109/IMWS-BIO.2013.6756166","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756166","url":null,"abstract":"Many research results on biological effects of cellular phone radiations agree that the main possible hazards are the thermal effects while some other results reveal that the thermal effects due to handsets radiation are negligible. Few can deny the fact and puzzle that some users did suffer from such symptoms as headaches due to cellular phones. This paper provides a potential cause or possible answer to the puzzle through analysis and understanding of GSM standards. We can also reveal that the low power low duty cycle pulsed train amplitude envelop modulation of GSM uplink signals is the main cause of such non-thermal biological effect for non-ionizing radiation.","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 6","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72606642","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.2013.6756249
Xiong Zhang, Yaxin Zheng, Ke-Qin Zhang
A simple electrochemical deposition method is introduced for the preparation of a hierarchical nanostructure comprised of graphene and carbon spheres. The carbon spheres are used as nano-spacers to separate graphene nanosheets, improving properties. This method allowed for the one-step preparation of a fibrous, flexible supercapacitor electrode. The fibrous, flexible supercapacitors fabricated based on this hierarchically nanostructured material achieved excellent electrochemical performance. With an areal capacitance of 60.02mF/cm2 (two-electrode system) in aqueous electrolyte, this structure displayed an areal capacitance three times than that of pure-graphene supercapacitors. This method can be employed to fabricate various graphene-based fibrous and flexible composite electrodes for wearable electronics and energy storage applications.
{"title":"Fibrous and flexible supercapacitors with a hierarchical nanostructure comprised of carbon spheres and graphene","authors":"Xiong Zhang, Yaxin Zheng, Ke-Qin Zhang","doi":"10.1109/IMWS-BIO.2013.6756249","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756249","url":null,"abstract":"A simple electrochemical deposition method is introduced for the preparation of a hierarchical nanostructure comprised of graphene and carbon spheres. The carbon spheres are used as nano-spacers to separate graphene nanosheets, improving properties. This method allowed for the one-step preparation of a fibrous, flexible supercapacitor electrode. The fibrous, flexible supercapacitors fabricated based on this hierarchically nanostructured material achieved excellent electrochemical performance. With an areal capacitance of 60.02mF/cm2 (two-electrode system) in aqueous electrolyte, this structure displayed an areal capacitance three times than that of pure-graphene supercapacitors. This method can be employed to fabricate various graphene-based fibrous and flexible composite electrodes for wearable electronics and energy storage applications.","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":"13 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77350705","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.2013.6756245
J. Sakai, Linsheng Wu, Hucheng Sun, Yong-xin Guo
Intrabody communication (IBC) is a promising technology that enables the improvement of digital healthcare devices. IBC uses the human body as a transmission media, and the accurate transmission model is important for the design of transceivers. In the measurements of transmission characteristics, baluns have been widely used to separate the grounds of transmitter and receiver. In this work, we analyze the balun's effect on the measured results of capacitive IBC channel. Baluns and balun boards used in our measurements have the parasitic common-mode capacitances, ranging from 1.1 to 32 pF, which affects the measured transmission level of the IBC channel, leading to a significant difference of about 40 dB.
{"title":"Balun's effect on the measurement of transmission characteristics for intrabody communication channel","authors":"J. Sakai, Linsheng Wu, Hucheng Sun, Yong-xin Guo","doi":"10.1109/IMWS-BIO.2013.6756245","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756245","url":null,"abstract":"Intrabody communication (IBC) is a promising technology that enables the improvement of digital healthcare devices. IBC uses the human body as a transmission media, and the accurate transmission model is important for the design of transceivers. In the measurements of transmission characteristics, baluns have been widely used to separate the grounds of transmitter and receiver. In this work, we analyze the balun's effect on the measured results of capacitive IBC channel. Baluns and balun boards used in our measurements have the parasitic common-mode capacitances, ranging from 1.1 to 32 pF, which affects the measured transmission level of the IBC channel, leading to a significant difference of about 40 dB.","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":"14 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":"81940985","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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