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Showing 1 to 12 of 20 entries
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Geometrical Design of a Scalable Overlapping Planar Spiral Coil Array to Generate a Homogeneous Magnetic Field.

IEEE transactions on magnetics

Jow UM, Ghovanloo M.
PMID: 24782576
IEEE Trans Magn. 2012 Dec 21;49(6):2933-2945. doi: 10.1109/TMAG.2012.2235181.

We present a design methodology for an overlapping hexagonal planar spiral coil (hex-PSC) array, optimized for creation of a homogenous magnetic field for wireless power transmission to randomly moving objects. The modular hex-PSC array has been implemented in the...

Modeling and optimization of printed spiral coils in air, saline, and muscle tissue environments.

IEEE transactions on biomedical circuits and systems

Uei-Ming Jow, Ghovanloo M.
PMID: 20948991
IEEE Trans Biomed Circuits Syst. 2009 Oct;3(5):339-47. doi: 10.1109/TBCAS.2009.2025366. Epub 2009 Aug 25.

Printed spiral coils (PSCs) are viable candidates for near-field wireless power transmission to the next generation of high-performance neuroprosthetic devices with extreme size constraints, which will target intraocular and intracranial spaces. Optimizing the PSC geometries to maximize the power...

Optimization of data coils in a multiband wireless link for neuroprosthetic implantable devices.

IEEE transactions on biomedical circuits and systems

Uei-Ming Jow, Ghovanloo M.
PMID: 21918679
IEEE Trans Biomed Circuits Syst. 2010 Oct;4(5):301-10. doi: 10.1109/TBCAS.2010.2049491. Epub 2010 Jun 14.

We have presented the design methodology along with detailed simulation and measurement results for optimizing a multiband transcutaneous wireless link for high-performance implantable neuroprosthetic devices. We have utilized three individual carrier signals and coil/antenna pairs for power transmission, forward...

The Circuit Theory Behind Coupled-Mode Magnetic Resonance-Based Wireless Power Transmission.

IEEE transactions on circuits and systems. I, Regular papers : a publication of the IEEE Circuits and Systems Society

Kiani M, Ghovanloo M.
PMID: 24683368
IEEE Trans Circuits Syst I Regul Pap. 2012 Sep;59(9):2065-2074. doi: 10.1109/TCSI.2011.2180446.

Inductive coupling is a viable scheme to wirelessly energize devices with a wide range of power requirements from nanowatts in radio frequency identification tags to milliwatts in implantable microelectronic devices, watts in mobile electronics, and kilowatts in electric cars....

A Multi-Cycle Q-Modulation for Dynamic Optimization of Inductive Links.

IEEE transactions on industrial electronics (1982)

Lee B, Yeon P, Ghovanloo M.
PMID: 27493445
IEEE Trans Ind Electron. 2016 Aug;63(8):5091-5100. doi: 10.1109/TIE.2016.2550009. Epub 2016 Apr 04.

This paper presents a new method, called multi-cycle Q-modulation, which can be used in wireless power transmission (WPT) to modulate the quality factor (Q) of the receiver (Rx) coil and dynamically optimize the load impedance to maximize the power...

An Adaptive Reconfigurable Active Voltage Doubler/Rectifier for Extended-Range Inductive Power Transmission.

IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society

Lee HM, Ghovanloo M.
PMID: 24633369
IEEE Trans Circuits Syst II Express Briefs. 2012;286-288. doi: 10.1109/ISSCC.2012.6177017.

We present an adaptive reconfigurable active voltage doubler (VD)/rectifier (REC) (VD/REC) in standard CMOS, which can adaptively change its topology to either a VD or a REC by sensing the output voltage, leading to more robust inductive power transmission...

An Integrated Power-Efficient Active Rectifier With Offset-Controlled High Speed Comparators for Inductively Powered Applications.

IEEE transactions on circuits and systems. I, Regular papers : a publication of the IEEE Circuits and Systems Society

Lee HM, Ghovanloo M.
PMID: 22174666
IEEE Trans Circuits Syst I Regul Pap. 2011;58(8):1749-1760. doi: 10.1109/TCSI.2010.2103172.

We present an active full-wave rectifier with offset-controlled high speed comparators in standard CMOS that provides high power conversion efficiency (PCE) in high frequency (HF) range for inductively powered devices. This rectifier provides much lower dropout voltage and far...

A Figure-of-Merit for Designing High-Performance Inductive Power Transmission Links.

IEEE transactions on industrial electronics (1982)

Kiani M, Ghovanloo M.
PMID: 25382898
IEEE Trans Ind Electron. 2012 Nov 16;60(11):5292-5305. doi: 10.1109/TIE.2012.2227914.

Power transfer efficiency (PTE) and power delivered to the load (PDL) are two key inductive link design parameters that relate to the power source and driver specs, power loss, transmission range, robustness against misalignment, variations in loading, and interference...

An Inductively Powered Scalable 32-Channel Wireless Neural Recording System-on-a-Chip for Neuroscience Applications.

Digest of technical papers. IEEE International Solid-State Circuits Conference

Lee SB, Lee HM, Kiani M, Jow UM, Ghovanloo M.
PMID: 21572569
Dig Tech Pap IEEE Int Solid State Circuits Conf. 2010;2010:120-121. doi: 10.1109/ISSCC.2010.5434028.

No abstract available.

An RFID-Based Closed-Loop Wireless Power Transmission System for Biomedical Applications.

IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society

Kiani M, Ghovanloo M.
PMID: 21179391
IEEE Trans Circuits Syst II Express Briefs. 2010 Apr 01;57(4):260-264. doi: 10.1109/TCSII.2010.2043470.

This brief presents a standalone closed-loop wireless power transmission system that is built around a commercial off-the-shelf (COTS) radio-frequency identification (RFID) reader (TRF7960) operating at 13.56 MHz. It can be used for inductively powering implantable biomedical devices in a...

A Smart Wirelessly Powered Homecage for Long-Term High-Throughput Behavioral Experiments.

IEEE sensors journal

Lee B, Kiani M, Ghovanloo M.
PMID: 26257586
IEEE Sens J. 2015 Sep;15(9):4905-4916. doi: 10.1109/JSEN.2015.2430859.

A wirelessly powered homecage system, called the EnerCage-HC, that is equipped with multicoil wireless power transfer, closed-loop power control, optical behavioral tracking, and a graphic user interface is presented for longitudinal electrophysiology and behavioral neuroscience experiments. The EnerCage-HC system...

An Adaptive Averaging Low Noise Front-End for Central and Peripheral Nerve Recording.

IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society

Lee B, Ghovanloo M.
PMID: 30666177
IEEE Trans Circuits Syst II Express Briefs. 2018 Jul;65(7):839-843. doi: 10.1109/TCSII.2017.2725988. Epub 2017 Jul 12.

An adaptive averaging low noise analog front-end (AFE) is presented for central and peripheral nerve recording applications. The proposed topology allows users to trade off, on the fly, between input referred noise and the number of channels via averaging....

Showing 1 to 12 of 20 entries