Search Results - "Lazzi, G."

On the Design of Efficient Multi-Coil Telemetry System for Biomedical Implants by RamRakhyani, A. K., Lazzi, G.

“…Two-coil based inductive coupling is a commonly used technique for wireless power and data transfer for biomedical implants. Because the source and load…”
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Asymmetric charge balanced waveforms direct retinal ganglion cell axon growth by Peng, M. G., Iseri, E., Simonyan, A., Lam, P., Kim, T., Medvidovic, S., Paknahad, J., Machnoor, M., Lazzi, G., Gokoffski, K. K.

“…Failure to direct axon regeneration to appropriate targets is a major barrier to restoring function after nerve injury. Development of strategies that can…”
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Impedance matching and implementation of planar space-filling dipoles as intraocular implanted antennas in a retinal prosthesis by Gosalia, K., Humayun, M.S., Lazzi, G.

“…In this work, an extremely compact planar meander line dipole is designed and implemented for use as an intraocular element in a retinal prosthesis. This…”
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Investigation of a microwave data telemetry link for a retinal prosthesis by Gosalia, K., Lazzi, G., Humayun, M.

“…In this paper, we investigate a novel approach of establishing a data telemetry link for a dual-unit retinal prosthesis at microwave frequencies (1.45 and 2.45…”
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Increasing Channel Capacity of an Ultrawideband MIMO System Using Vector Antennas by Rajagopalan, A., Gupta, G., Konanur, A.S., Hughes, B., Lazzi, G.

“…Recently it was shown that co-located vector antennas can provide the same capacity increase as spatial array antennas in multiple-input multiple-output (MIMO)…”
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Reduced size, dual-polarized microstrip patch antenna for wireless communications by Gosalia, K., Lazzi, G.

“…A novel, compact, probe-fed microstrip patch antenna for operation in dual-polarization mode is proposed. The novel design is achieved by etching out a…”
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Electromagnetic absorption in the human head and neck for mobile telephones at 835 and 1900 MHz by Gandhi, O.P., Lazzi, G., Furse, C.M.

“…The authors have used the finite-difference time-domain method and a new millimeter-resolution anatomically based model of the human to study electromagnetic…”
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Increasing wireless channel capacity through MIMO systems employing co-located antennas by Konanur, A.S., Gosalia, K., Krishnamurthy, S.H., Hughes, B., Lazzi, G.

“…Wireless networks consisting of compact antennas find applications in diverse areas such as communication systems, direction of arrival estimation, sensor…”
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Thermal elevation in the human eye and head due to the operation of a retinal prosthesis by Gosalia, K., Weiland, J., Humayun, M., Lazzi, G.

“…An explicit finite-difference time-domain formulation of the bio-heat equation is employed with a three-dimensional head eye model to evaluate the temperature…”
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On the degrees of freedom in linear array systems with tri-polarized antennas by Gupta, G., Hughes, B., Lazzi, G.

“…In this paper, we provide a theoretical, simulation and experimental characterization of the performance of linear arrays of tri-polarized dipole antennas in…”
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Computed SAR and thermal elevation in a 0.25-mm 2-D model of the human eye and head in response to an implanted retinal stimulator - part I: models and methods by DeMarco, S.C., Lazzi, G., Wentai Liu, Weiland, J.D., Humayun, M.S.

“…Retinitis pigmentosa and age-related macular degeneration lead to blindness through progressive loss of retinal photoreceptors. Attempts are under way to…”
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Specific Absorption Rate and Current Densities in the Human Eye and Head Induced by the Telemetry Link of an Epiretinal Prosthesis by Singh, V., Qusba, A., Roy, A., Castro, R.A., McClure, K., Rongching Dai, Greenberg, R.J., Weiland, J.D., Humayun, M.S., Lazzi, G.

“…The fields induced in the human head by the wireless telemetry used for Second Sight Medical Product, Inc.'s epiretinal prosthesis system are characterized for…”
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Extension and validation of a perfectly matched layer formulation for the unconditionally stable D-H FDTD method by Schmidt, S., Lazzi, G.

“…In this letter, a modification to the recently proposed unconditionally stable D-H ADI FDTD method is presented that considerably reduces the late-time error…”
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An arbitrary waveform stimulus circuit for visual prostheses using a low-area multibias DAC by DeMarco, S.C., Wentai Liu, Singh, P.R., Lazzi, G., Humayun, M.S., Weiland, J.D.

“…Attempts are underway to construct a retinal prosthesis to recover limited vision for blind patients with retinitis pigmentosa using implantable electronic…”
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Use of the FDTD thin-strut formalism for biomedical telemetry coil designs by Schmidt, S., Lazzi, G.

“…The finite-difference time-domain (FDTD) method extended by thin-strut formalism was used to study the current coupling between rectangular coils for use in…”
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A mixed FDTD-integral equation approach for on-site safety assessment in complex electromagnetic environments by Lazzi, G., Gandhi, O.P.

“…A mixed finite-difference time-domain (FDTD)-integral equation approach for the evaluation of the power deposition in the human body model immersed in a…”
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Unconditionally stable D-H FDTD formulation with anisotropic PML boundary conditions by Lazzi, G.

“…An unconditionally stable finite difference time domain (FDTD) method based on a D-H formulation and the recently proposed alternating-direction-implicit (ADI)…”
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Cole-cole dispersion models for aqueous gelatin-syrup dielectric composites by Buff, P.M., Steer, M.B., Lazzi, G.

“…A dielectric composite is developed with permittivity ranging from 8 to 75 with selectable conductive and dielectric losses. The composite comprises gelatin,…”
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On the Thermal Elevation of a 60-Electrode Epiretinal Prosthesis for the Blind by Singh, V., Roy, A., Castro, R., McClure, K., Dai, R., Agrawal, R., Greenberg, R.J., Weiland, J.D., Humayun, M.S., Lazzi, G.

“…In this paper, the thermal elevation in the human body due to the operation of a dual-unit epiretinal prosthesis to restore partial vision to the blind…”
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Computed SAR and thermal elevation in a 0.25-mm 2-D model of the human eye and head in response to an implanted retinal stimulator - part II: results by Lazzi, G., DeMarco, S.C., Wentai Liu, Weiland, J.D., Humayun, M.S.

“…This is the second of a series of two papers on the thermal increase in the human eye and head in response to an implanted retinal stimulator. This paper…”
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