Abstract:
Implantable biomedical sensors and actuators are highly desired in modern medicine. In many cases, the implant's electrical power source profoundly determines its overall...Show MoreMetadata
Abstract:
Implantable biomedical sensors and actuators are highly desired in modern medicine. In many cases, the implant's electrical power source profoundly determines its overall size and performance. The inductively coupled coil pair operating at the radio-frequency (RF) has been the primary method for wirelessly delivering electrical power to implants for the last three decades. Recent designs significantly improve the power delivery efficiency by optimizing the operating frequency, coil size and coil distance. However, RF radiation hazard and tissue absorption are the concerns in the RF wireless power transfer technology (RF-WPTT) [4], [5]. Also, it requires an accurate impedance matching network that is sensitive to operating environments between the receiving coil and the load for efficient power delivery. In this paper, a novel low-frequency wireless power transfer technology (LF-WPTT) using rotating rare-earth permanent magnets is demonstrated. The LF-WPTT is able to deliver 2.967 W power at ~ 180 Hz to an 117.1 Ω resistor over 1 cm distance with 50% overall efficiency. Because of the low operating frequency, RF radiation hazard and tissue absorption are largely avoided, and the power delivery efficiency from the receiving coil to the load is independent of the operating environment. Also, there is little power loss observed in the LF-WPTT when the receiving coil is enclosed by non-magnetic implant-grade stainless steel.
Published in: IEEE Transactions on Biomedical Circuits and Systems ( Volume: 7, Issue: 4, August 2013)
School of Engineering, San Francisco State University, San Francisco, CA, USA
Hao Jiang (M'95) received the B.S. degree in materials sciences and engineering from Tsinghua University, Beijing, China, and the Ph.D. degree in electrical engineering from University of California, San Diego, in 1994 and 2000, respectively.
He has been with San Francisco State University (SFSU) since August 2007 as an Assistant Professor in electrical engineering. Prior to joining SFSU, he worked for the Broadcom Corpora...Show More
Hao Jiang (M'95) received the B.S. degree in materials sciences and engineering from Tsinghua University, Beijing, China, and the Ph.D. degree in electrical engineering from University of California, San Diego, in 1994 and 2000, respectively.
He has been with San Francisco State University (SFSU) since August 2007 as an Assistant Professor in electrical engineering. Prior to joining SFSU, he worked for the Broadcom Corpora...View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Junmin Zhang received the B.S. and M.S. degrees in electrical engineering from San Francisco State University (SFSU), San Francisco, CA, in 2008 and 2011, respectively.
Since 2011, he has been an Engineer in the School of Engineering at SFSU. From 2008 to 2011, he worked on the low-frequency wireless power transfer technology for biomedical implant in the SF Bioelectronics Lab at SFSU.
Junmin Zhang received the B.S. and M.S. degrees in electrical engineering from San Francisco State University (SFSU), San Francisco, CA, in 2008 and 2011, respectively.
Since 2011, he has been an Engineer in the School of Engineering at SFSU. From 2008 to 2011, he worked on the low-frequency wireless power transfer technology for biomedical implant in the SF Bioelectronics Lab at SFSU.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Di Lan (S'09) received the B.S. and M.S. degrees in electrical engineering from San Francisco State University, San Francisco, CA, in 2009 and 2012, respectively.
From 2008 to 2012, he worked on the low-frequency wireless power transfer technology and its power conditioning circuits for biomedical applications. Currently, he is a doctoral student at the University of South Florida, Tampa, working on RF MEMS.
Di Lan (S'09) received the B.S. and M.S. degrees in electrical engineering from San Francisco State University, San Francisco, CA, in 2009 and 2012, respectively.
From 2008 to 2012, he worked on the low-frequency wireless power transfer technology and its power conditioning circuits for biomedical applications. Currently, he is a doctoral student at the University of South Florida, Tampa, working on RF MEMS.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Kelvin K. Chao is a senior student at Mill High School, Millbrae, CA. He was a Research Intern in the Bioelectronics Lab at San Francisco State University, San Francisco, CA, in the summers of 2011 and 2012.
Kelvin K. Chao is a senior student at Mill High School, Millbrae, CA. He was a Research Intern in the Bioelectronics Lab at San Francisco State University, San Francisco, CA, in the summers of 2011 and 2012.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Shyshenq Liou (M'89) received the M.S.E.E. degree and Ph.D. degree in electrical engineering from the University of Texas at Austin in 1985 and 1989, respectively.
In 1991, he joined the School of Engineering, San Francisco State University (SFSU), San Francisco, CA, as an Assistant Professor. In 2006–2007, he was a Senior Visiting Scholar at Tsinghua University, Beijing, China, doing energy efficiency research. He retired...Show More
Shyshenq Liou (M'89) received the M.S.E.E. degree and Ph.D. degree in electrical engineering from the University of Texas at Austin in 1985 and 1989, respectively.
In 1991, he joined the School of Engineering, San Francisco State University (SFSU), San Francisco, CA, as an Assistant Professor. In 2006–2007, he was a Senior Visiting Scholar at Tsinghua University, Beijing, China, doing energy efficiency research. He retired...View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Hamid Shahnasser (M'89) received the B.S., M.S. and Ph.D. degrees from McGill University, Montreal, QC, Canada, Carnegie Mellon University, Pittsburgh, PA, and Drexel University, Philadelphia, PA, respectively.
His research interests are in the area of computer systems and communication networks and their applications in various domains. His research work has been funded by NSF, NSA and the NASA Ames Research Center and De...Show More
Hamid Shahnasser (M'89) received the B.S., M.S. and Ph.D. degrees from McGill University, Montreal, QC, Canada, Carnegie Mellon University, Pittsburgh, PA, and Drexel University, Philadelphia, PA, respectively.
His research interests are in the area of computer systems and communication networks and their applications in various domains. His research work has been funded by NSF, NSA and the NASA Ames Research Center and De...View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Richard Fechter received the B.S degree from the University of Utah, Salt Lake City, in 1979.
He works at the University of California, San Francisco (UCSF), Medical Center and Children's Hospital. He is a Principal Developmental Engineer in the Clinical Engineering Department, and has expertise as an Electrical Engineer, Mechanical Engineer, and Medical Device Incident Investigator. He also works with the UCSF Pediatric D...Show More
Richard Fechter received the B.S degree from the University of Utah, Salt Lake City, in 1979.
He works at the University of California, San Francisco (UCSF), Medical Center and Children's Hospital. He is a Principal Developmental Engineer in the Clinical Engineering Department, and has expertise as an Electrical Engineer, Mechanical Engineer, and Medical Device Incident Investigator. He also works with the UCSF Pediatric D...View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Shinjiro Hirose received the B.S. degree in mechanical engineering from the Massachusetts Institute of Technology, Cambridge, and received a medical degree from New York Medical College, Valhalla.
He completed three years of surgery training at the University of California, Davis, Medical Center. He completed a general surgery residency and a postdoctoral fellowship at the Fetal Treatment Center Laboratory at the Universit...Show More
Shinjiro Hirose received the B.S. degree in mechanical engineering from the Massachusetts Institute of Technology, Cambridge, and received a medical degree from New York Medical College, Valhalla.
He completed three years of surgery training at the University of California, Davis, Medical Center. He completed a general surgery residency and a postdoctoral fellowship at the Fetal Treatment Center Laboratory at the Universit...View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Michael Harrison graduated cum laude from Yale University, New Haven, CT, and magna cum laude from Harvard Medical School, Boston, MA.
He is Professor Emeritus of Surgery, Pediatrics, and Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco (UCSF). He completed his surgical training at Massachusetts General Hospital, Boston, MA, followed by a pediatric surgery fellowship at the Ri...Show More
Michael Harrison graduated cum laude from Yale University, New Haven, CT, and magna cum laude from Harvard Medical School, Boston, MA.
He is Professor Emeritus of Surgery, Pediatrics, and Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco (UCSF). He completed his surgical training at Massachusetts General Hospital, Boston, MA, followed by a pediatric surgery fellowship at the Ri...View more
Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
Shuvo Roy (M'90) received the B.S. degree (magna cum laude) with general honors for triple majors in physics, mathematics (special honors), and computer science from Mount Union College, Alliance, OH, in 1992. He received the M.S. degree in electrical engineering and applied physics and the Ph.D. degree in electrical engineering and computer science from Case Western Reserve University, Cleveland, OH, in 1995 and 2001, re...Show More
Shuvo Roy (M'90) received the B.S. degree (magna cum laude) with general honors for triple majors in physics, mathematics (special honors), and computer science from Mount Union College, Alliance, OH, in 1992. He received the M.S. degree in electrical engineering and applied physics and the Ph.D. degree in electrical engineering and computer science from Case Western Reserve University, Cleveland, OH, in 1995 and 2001, re...View more
Contents School of Engineering, San Francisco State University, San Francisco, CA, USA
Hao Jiang (M'95) received the B.S. degree in materials sciences and engineering from Tsinghua University, Beijing, China, and the Ph.D. degree in electrical engineering from University of California, San Diego, in 1994 and 2000, respectively.
He has been with San Francisco State University (SFSU) since August 2007 as an Assistant Professor in electrical engineering. Prior to joining SFSU, he worked for the Broadcom Corporation, Jazz Semiconductor, and Conexant Systems Inc. His research interests are in the general area of analog integrated circuits, particularly in ultra-low-power circuits for biomedical applications.
Hao Jiang (M'95) received the B.S. degree in materials sciences and engineering from Tsinghua University, Beijing, China, and the Ph.D. degree in electrical engineering from University of California, San Diego, in 1994 and 2000, respectively.
He has been with San Francisco State University (SFSU) since August 2007 as an Assistant Professor in electrical engineering. Prior to joining SFSU, he worked for the Broadcom Corporation, Jazz Semiconductor, and Conexant Systems Inc. His research interests are in the general area of analog integrated circuits, particularly in ultra-low-power circuits for biomedical applications.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Junmin Zhang received the B.S. and M.S. degrees in electrical engineering from San Francisco State University (SFSU), San Francisco, CA, in 2008 and 2011, respectively.
Since 2011, he has been an Engineer in the School of Engineering at SFSU. From 2008 to 2011, he worked on the low-frequency wireless power transfer technology for biomedical implant in the SF Bioelectronics Lab at SFSU.
Junmin Zhang received the B.S. and M.S. degrees in electrical engineering from San Francisco State University (SFSU), San Francisco, CA, in 2008 and 2011, respectively.
Since 2011, he has been an Engineer in the School of Engineering at SFSU. From 2008 to 2011, he worked on the low-frequency wireless power transfer technology for biomedical implant in the SF Bioelectronics Lab at SFSU.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Di Lan (S'09) received the B.S. and M.S. degrees in electrical engineering from San Francisco State University, San Francisco, CA, in 2009 and 2012, respectively.
From 2008 to 2012, he worked on the low-frequency wireless power transfer technology and its power conditioning circuits for biomedical applications. Currently, he is a doctoral student at the University of South Florida, Tampa, working on RF MEMS.
Di Lan (S'09) received the B.S. and M.S. degrees in electrical engineering from San Francisco State University, San Francisco, CA, in 2009 and 2012, respectively.
From 2008 to 2012, he worked on the low-frequency wireless power transfer technology and its power conditioning circuits for biomedical applications. Currently, he is a doctoral student at the University of South Florida, Tampa, working on RF MEMS.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Kelvin K. Chao is a senior student at Mill High School, Millbrae, CA. He was a Research Intern in the Bioelectronics Lab at San Francisco State University, San Francisco, CA, in the summers of 2011 and 2012.
Kelvin K. Chao is a senior student at Mill High School, Millbrae, CA. He was a Research Intern in the Bioelectronics Lab at San Francisco State University, San Francisco, CA, in the summers of 2011 and 2012.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Shyshenq Liou (M'89) received the M.S.E.E. degree and Ph.D. degree in electrical engineering from the University of Texas at Austin in 1985 and 1989, respectively.
In 1991, he joined the School of Engineering, San Francisco State University (SFSU), San Francisco, CA, as an Assistant Professor. In 2006–2007, he was a Senior Visiting Scholar at Tsinghua University, Beijing, China, doing energy efficiency research. He retired from SFSU in August 2012 and now works as a Consultant in building solar projects in the USA and Taiwan.
Shyshenq Liou (M'89) received the M.S.E.E. degree and Ph.D. degree in electrical engineering from the University of Texas at Austin in 1985 and 1989, respectively.
In 1991, he joined the School of Engineering, San Francisco State University (SFSU), San Francisco, CA, as an Assistant Professor. In 2006–2007, he was a Senior Visiting Scholar at Tsinghua University, Beijing, China, doing energy efficiency research. He retired from SFSU in August 2012 and now works as a Consultant in building solar projects in the USA and Taiwan.View more
School of Engineering, San Francisco State University, San Francisco, CA, USA
Hamid Shahnasser (M'89) received the B.S., M.S. and Ph.D. degrees from McGill University, Montreal, QC, Canada, Carnegie Mellon University, Pittsburgh, PA, and Drexel University, Philadelphia, PA, respectively.
His research interests are in the area of computer systems and communication networks and their applications in various domains. His research work has been funded by NSF, NSA and the NASA Ames Research Center and Department of Education, as well as local industries. His work has been presented at many international forums and published in journals and conference proceedings.
Hamid Shahnasser (M'89) received the B.S., M.S. and Ph.D. degrees from McGill University, Montreal, QC, Canada, Carnegie Mellon University, Pittsburgh, PA, and Drexel University, Philadelphia, PA, respectively.
His research interests are in the area of computer systems and communication networks and their applications in various domains. His research work has been funded by NSF, NSA and the NASA Ames Research Center and Department of Education, as well as local industries. His work has been presented at many international forums and published in journals and conference proceedings.View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Richard Fechter received the B.S degree from the University of Utah, Salt Lake City, in 1979.
He works at the University of California, San Francisco (UCSF), Medical Center and Children's Hospital. He is a Principal Developmental Engineer in the Clinical Engineering Department, and has expertise as an Electrical Engineer, Mechanical Engineer, and Medical Device Incident Investigator. He also works with the UCSF Pediatric Device Consortium and has contributed to numerous peer-reviewed articles and medical device patents.
Richard Fechter received the B.S degree from the University of Utah, Salt Lake City, in 1979.
He works at the University of California, San Francisco (UCSF), Medical Center and Children's Hospital. He is a Principal Developmental Engineer in the Clinical Engineering Department, and has expertise as an Electrical Engineer, Mechanical Engineer, and Medical Device Incident Investigator. He also works with the UCSF Pediatric Device Consortium and has contributed to numerous peer-reviewed articles and medical device patents.View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Shinjiro Hirose received the B.S. degree in mechanical engineering from the Massachusetts Institute of Technology, Cambridge, and received a medical degree from New York Medical College, Valhalla.
He completed three years of surgery training at the University of California, Davis, Medical Center. He completed a general surgery residency and a postdoctoral fellowship at the Fetal Treatment Center Laboratory at the University of California, San Francisco (UCSF), where he researched neural regeneration after spinal cord injury and its implications in fetal surgery for myelomeningocele, a type of spina bifida. He completed a pediatric surgery fellowship at Morgan Stanley Children's Hospital at Columbia University, New York. His research interests include fetal surgery for disorders of twin gestations, congenital diaphragmatic hernia, and gastroschisis. He is an Assistant Professor of Surgery at UCSF.
Shinjiro Hirose received the B.S. degree in mechanical engineering from the Massachusetts Institute of Technology, Cambridge, and received a medical degree from New York Medical College, Valhalla.
He completed three years of surgery training at the University of California, Davis, Medical Center. He completed a general surgery residency and a postdoctoral fellowship at the Fetal Treatment Center Laboratory at the University of California, San Francisco (UCSF), where he researched neural regeneration after spinal cord injury and its implications in fetal surgery for myelomeningocele, a type of spina bifida. He completed a pediatric surgery fellowship at Morgan Stanley Children's Hospital at Columbia University, New York. His research interests include fetal surgery for disorders of twin gestations, congenital diaphragmatic hernia, and gastroschisis. He is an Assistant Professor of Surgery at UCSF.View more
Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
Michael Harrison graduated cum laude from Yale University, New Haven, CT, and magna cum laude from Harvard Medical School, Boston, MA.
He is Professor Emeritus of Surgery, Pediatrics, and Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco (UCSF). He completed his surgical training at Massachusetts General Hospital, Boston, MA, followed by a pediatric surgery fellowship at the Rikshospitalet, Oslo, Norway, and the Children's Hospital of Los Angeles. He is internationally renowned for his expertise and innovation in pediatric and fetal surgery. He was one of the original founders of the International Fetal Medicine and Surgery Society, the Founding Director of the UCSF Fetal Treatment Center, and most recently, the Founding Director of the UCSF Pediatric Device Consortium. He has authored more than 400 peer-reviewed articles and several textbooks, including three editions of The Unborn Patient: The Art and Science of Fetal Therapy. He maintains an active research lab focused on medical device innovation, development, and commercialization.
Dr. Harrison is a member of various medical and surgical professional societies and has been recognized by his colleagues for his contributions to the field, and honored with a number of prestigious awards, including the American College of Surgeons Jacobson Innovation Award, as well as membership into the Institute of Medicine. In 2011, he was the recipient of UCSFs inaugural Distinguished Lectureship in Translational Research.
Michael Harrison graduated cum laude from Yale University, New Haven, CT, and magna cum laude from Harvard Medical School, Boston, MA.
He is Professor Emeritus of Surgery, Pediatrics, and Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco (UCSF). He completed his surgical training at Massachusetts General Hospital, Boston, MA, followed by a pediatric surgery fellowship at the Rikshospitalet, Oslo, Norway, and the Children's Hospital of Los Angeles. He is internationally renowned for his expertise and innovation in pediatric and fetal surgery. He was one of the original founders of the International Fetal Medicine and Surgery Society, the Founding Director of the UCSF Fetal Treatment Center, and most recently, the Founding Director of the UCSF Pediatric Device Consortium. He has authored more than 400 peer-reviewed articles and several textbooks, including three editions of The Unborn Patient: The Art and Science of Fetal Therapy. He maintains an active research lab focused on medical device innovation, development, and commercialization.
Dr. Harrison is a member of various medical and surgical professional societies and has been recognized by his colleagues for his contributions to the field, and honored with a number of prestigious awards, including the American College of Surgeons Jacobson Innovation Award, as well as membership into the Institute of Medicine. In 2011, he was the recipient of UCSFs inaugural Distinguished Lectureship in Translational Research.View more
Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
Shuvo Roy (M'90) received the B.S. degree (magna cum laude) with general honors for triple majors in physics, mathematics (special honors), and computer science from Mount Union College, Alliance, OH, in 1992. He received the M.S. degree in electrical engineering and applied physics and the Ph.D. degree in electrical engineering and computer science from Case Western Reserve University, Cleveland, OH, in 1995 and 2001, respectively.
He is currently an Associate Professor in the Department of Bioengineering and Therapeutic Sciences (BTS), a joint department of the Schools of Pharmacy and Medicine at the University of California, San Francisco (UCSF), and Director of the UCSF Biomedical Microdevices Laboratory. He holds the Harry Wm. and Diana V. Hind Distinguished Professorship in Pharmaceutical Sciences II in the UCSF School of Pharmacy. He is a founding member of the UCSF Pediatric Devices Consortium, which has a mission to accelerate the development of innovative devices for children's health, and a faculty affiliate of the California Institute for Quantitative Biosciences (QB3). From 1998 to 2008, he was Co-Director of the BioMEMS Laboratory in the Department of Biomedical Engineering at the Cleveland Clinic, Cleveland, OH, where he worked with basic scientists, practicing clinicians, and biomedical engineers to develop MEMS solutions to high-impact medical challenges. In 2008, he joined UCSF to continue the development of biomedical devices including wireless physiological monitoring systems and bioartificial replacement organs, and participate in the training of professional students in the School of Pharmacy as well as graduate students in the UCSF/UCB Joint Graduate Group in Bioengineering.
Dr. Roy is an Associate Editor of Biomedical Microdevices and editorial board member of Sensors and Materials. He has contributed to more than 90 technical publications, coauthored three book chapters, has been awarded 16 U.S. patents, and given more than 70 invited presentations. He is the recipient of a Top 40 under 40 award by Crain's Cleveland Business in 1999 and the Clinical Translation Award at the 2nd Annual BioMEMS and Biomedical Nanotechnology World 2001 meeting. In 2003, he was selected as a recipient of the TR100, which features the world's 100 Top Young Innovators as selected by MIT Technology Review. In 2004, he was presented with a NASA Group Achievement Award for his work on harsh environment MEMS. In 2005, he was named in Who's Who in Biotechnology by Crain's Cleveland Business. In 2005 and 2007, he was recognized as a Cleveland Clinic Innovator. In 2009, he was nominated for the Biotechnology Industry Organizations Biotech Humanitarian Award, which is given in recognition of an individual who has used biotechnology to unlock its potential to improve the earth.
Shuvo Roy (M'90) received the B.S. degree (magna cum laude) with general honors for triple majors in physics, mathematics (special honors), and computer science from Mount Union College, Alliance, OH, in 1992. He received the M.S. degree in electrical engineering and applied physics and the Ph.D. degree in electrical engineering and computer science from Case Western Reserve University, Cleveland, OH, in 1995 and 2001, respectively.
He is currently an Associate Professor in the Department of Bioengineering and Therapeutic Sciences (BTS), a joint department of the Schools of Pharmacy and Medicine at the University of California, San Francisco (UCSF), and Director of the UCSF Biomedical Microdevices Laboratory. He holds the Harry Wm. and Diana V. Hind Distinguished Professorship in Pharmaceutical Sciences II in the UCSF School of Pharmacy. He is a founding member of the UCSF Pediatric Devices Consortium, which has a mission to accelerate the development of innovative devices for children's health, and a faculty affiliate of the California Institute for Quantitative Biosciences (QB3). From 1998 to 2008, he was Co-Director of the BioMEMS Laboratory in the Department of Biomedical Engineering at the Cleveland Clinic, Cleveland, OH, where he worked with basic scientists, practicing clinicians, and biomedical engineers to develop MEMS solutions to high-impact medical challenges. In 2008, he joined UCSF to continue the development of biomedical devices including wireless physiological monitoring systems and bioartificial replacement organs, and participate in the training of professional students in the School of Pharmacy as well as graduate students in the UCSF/UCB Joint Graduate Group in Bioengineering.
Dr. Roy is an Associate Editor of Biomedical Microdevices and editorial board member of Sensors and Materials. He has contributed to more than 90 technical publications, coauthored three book chapters, has been awarded 16 U.S. patents, and given more than 70 invited presentations. He is the recipient of a Top 40 under 40 award by Crain's Cleveland Business in 1999 and the Clinical Translation Award at the 2nd Annual BioMEMS and Biomedical Nanotechnology World 2001 meeting. In 2003, he was selected as a recipient of the TR100, which features the world's 100 Top Young Innovators as selected by MIT Technology Review. In 2004, he was presented with a NASA Group Achievement Award for his work on harsh environment MEMS. In 2005, he was named in Who's Who in Biotechnology by Crain's Cleveland Business. In 2005 and 2007, he was recognized as a Cleveland Clinic Innovator. In 2009, he was nominated for the Biotechnology Industry Organizations Biotech Humanitarian Award, which is given in recognition of an individual who has used biotechnology to unlock its potential to improve the earth.View more
