Packaging and RF telemetry system for a biocompatible wireless pressure sensor

Shankaran Janardhanan, Joan Z. Delalic, Jeffrey Catchmark, Michael Ruggieri, Alan Braverman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationProceedings - 2005 International Symposium on Microelectronics, IMAPS 2005
Pages792-800
Number of pages9
StatePublished - Dec 1 2005
Event38th International Symposium on Microelectronics, IMAPS 2005 - Philadelphia, PA, United States
Duration: Sep 25 2005Sep 29 2005

Publication series

NameProceedings - 2005 International Symposium on Microelectronics, IMAPS 2005

Other

Other38th International Symposium on Microelectronics, IMAPS 2005
CountryUnited States
CityPhiladelphia, PA
Period9/25/059/29/05

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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