TY - GEN
T1 - Packaging and RF telemetry system for a biocompatible wireless pressure sensor
AU - Janardhanan, Shankaran
AU - Delalic, Joan Z.
AU - Catchmark, Jeffrey
AU - Ruggieri, Michael
AU - Braverman, Alan
PY - 2005
Y1 - 2005
N2 - The goal of this research is to develop a RF telemetry system for a biocompatible wireless pressure sensor that is used to monitor the urinary bladder pressure. This system will be used to evaluate the cause of incontinence so that therapy can be directed towards the bladder. Conventional sensors used in biomedical implants require the use of wires for powering and data read out. This restricts mobility and requires shielding which is a potential for causing malfunction of circuit. This research eliminates these problems by using RF telemetry for wireless powering of the sensor and for read out of the data. The RF Telemetry system consists of an implanted sensor and an external wireless telemetry unit. The external wireless telemetry unit consists of a miniature inductor for wireless powering and data read out, an impedance matching circuit and an amplifier. The internal sensor consists of a capacitive element and an on chip inductor (LC circuit). In this research the on chip and the external inductors have been modeled using Sonnet and the mutual inductive coupling link between them has been tested over a distance of 200mm for different offsets. The effect of body tissues will be taken into account. A low noise amplifier will be developed for the external circuit to increase the sensitivity of the device. The packaging issues will also be taken into account.
AB - The goal of this research is to develop a RF telemetry system for a biocompatible wireless pressure sensor that is used to monitor the urinary bladder pressure. This system will be used to evaluate the cause of incontinence so that therapy can be directed towards the bladder. Conventional sensors used in biomedical implants require the use of wires for powering and data read out. This restricts mobility and requires shielding which is a potential for causing malfunction of circuit. This research eliminates these problems by using RF telemetry for wireless powering of the sensor and for read out of the data. The RF Telemetry system consists of an implanted sensor and an external wireless telemetry unit. The external wireless telemetry unit consists of a miniature inductor for wireless powering and data read out, an impedance matching circuit and an amplifier. The internal sensor consists of a capacitive element and an on chip inductor (LC circuit). In this research the on chip and the external inductors have been modeled using Sonnet and the mutual inductive coupling link between them has been tested over a distance of 200mm for different offsets. The effect of body tissues will be taken into account. A low noise amplifier will be developed for the external circuit to increase the sensitivity of the device. The packaging issues will also be taken into account.
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M3 - Conference contribution
AN - SCOPUS:84876927322
SN - 0930815777
SN - 9780930815776
T3 - Proceedings - 2005 International Symposium on Microelectronics, IMAPS 2005
SP - 792
EP - 800
BT - Proceedings - 2005 International Symposium on Microelectronics, IMAPS 2005
T2 - 38th International Symposium on Microelectronics, IMAPS 2005
Y2 - 25 September 2005 through 29 September 2005
ER -