title: The Responsivity of a Miniaturized Passive Implantable Wireless Pressure Sensor.
abstract: A miniature batteryless implantable wireless pressure sensor that can be used deep inside the body is desired by the medical community. MEMS technology makes it possible to achieve high responsivity that directly determines the operating distance between a miniature implanted sensor and the external RF probe, while providing the read-out. In this paper, for the first time, an analytical expression of the system responsivity versus the sensor design is derived using an equivalent circuit model. Also, the integration of micro-coil inductors and pressure sensitive capacitors on a single silicon chip using MEMS fabrication techniques is demonstrated. Further, the derived analytical design theory is validated by the measured responsivity of these sensors.
authors.affiliation: School of Engineering, San Francisco State University, San Francisco, CA 94132.
authors.forename: Hao
authors.initials: H
authors.lastname: Jiang
authors.affiliation: H-Cubed, Inc., Olmsted Falls, OH 44138.
authors.forename: Di
authors.initials: D
authors.lastname: Lan
authors.affiliation: Dept. of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA 94158.
authors.forename: Ken
authors.initials: K
authors.lastname: Goldman
authors.forename: Mozziyar
authors.initials: M
authors.lastname: Etemadi
authors.forename: Hamid
authors.initials: H
authors.lastname: Shahnasser
authors.forename: Shuvo
authors.initials: S
authors.lastname: Roy