Implantable wireless microsystems for the measurement of intraocular pressure

Faul, Andre; Turner, Matthew; Naber, John

doi:10.1109/mwscas.2011.6026619

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…Several passive read-out systems using inductive and capacitive coupling approaches have been reported frequently. Faul et al (2011) reported a wireless passive pressure sensor for measuring intraocular pressure where the sensor device consists of a capacitor array and a coil inductor, which form a series LC type resonator. The concept of inductively coupled wireless LC sensors where the stimulus or the applied pressure, strain or torque signal changes the capacitance of an LC circuit, hence shifting the resonance frequency, was reported by Cao et al (2011); Radislav A Potyrailo and Morris (2009);RamRakhyani et al (2011);and Ee Lim Tan and Ong (2007).…”

Section: Introductionmentioning

confidence: 99%

Near-field wireless sensing of single and multiple open-ended micro coils

Yousaf

Boccard

Khan

et al. 2013

J. Sens. Sens. Syst.

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Abstract. In this work we present near-field wireless sensing of single and multiple open-ended micro coils using an electrically small loop antenna. Wirelessly characterized parameters of open-ended micro coils include its resonance frequency, quality factor and inductance. Moreover a wireless frequency-dependent analytical model was developed. Micro coil inductance was extracted from the wirelessly measured signal using a constraint-based least-squares approach. Wireless measurements and analytical fit of micro coils are in strong agreement which validates the analytical model. Finite element method (FEM) simulations of the coupled system were done in COMSOL Multiphysics.

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Section: Introductionmentioning

confidence: 99%

Near-field wireless sensing of single and multiple open-ended micro coils

Yousaf

Boccard

Khan

et al. 2013

J. Sens. Sens. Syst.

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show abstract

“…The antennas were fabricated on 1.38 mm thick FR-4 printed circuit board (PCB) using a PCB milling machine. Table 6 compares measured and simulated antenna parameters [49]. Resonant frequencies of the fabricated antennas were within 7% of the simulated values, a difference that is attributed to not knowing the exact value of the dielectric properties of the FR-4 substrate, and to the fabrication process.…”

Section: Esa Design and Developmentmentioning

confidence: 86%

“…Sensors for measuring physiological pressure typically consist of Microelectromechanical Systems (MEMS) capacitive pressure sensors [49]. Most implantable transducers make use of some kind of capacitor dependent oscillator.…”

Section: Oscillatorsmentioning

confidence: 99%