• Publications
  • Influence
Design and Optimization of Printed Spiral Coils for Efficient Transcutaneous Inductive Power Transmission
TLDR
The next generation of implantable high-power neuroprosthetic devices such as visual prostheses and brain computer interfaces are going to be powered by transcutaneous inductive power links formed between a pair of printed spiral coils. Expand
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Design and Optimization of a 3-Coil Inductive Link for Efficient Wireless Power Transmission
TLDR
We have proposed a 3-coil inductive power transfer link with comparable PTE over its 4- coil counterpart at large coupling distances, which can also achieve high PDL. Expand
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A wideband frequency-shift keying wireless link for inductively powered biomedical implants
TLDR
A high data-rate frequency-shift keying (FSK) modulation protocol, a wideband inductive link, and three demodulator circuits have been developed with a data rate-to-carrier-frequency ratio of up to 67%. Expand
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Modeling and Optimization of Printed Spiral Coils in Air, Saline, and Muscle Tissue Environments
TLDR
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. Expand
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The Circuit Theory Behind Coupled-Mode Magnetic Resonance-Based Wireless Power Transmission
TLDR
We have analyzed the PTE of a pair of capacitively loaded inductors via reflected load theory (RLT) and compared it with a method known as coupled-mode theory (CMT). Expand
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Fully integrated wideband high-current rectifiers for inductively powered devices
TLDR
This paper describes the design and implementation of fully integrated rectifiers in BiCMOS and standard CMOS technologies for rectifying an externally generated RF carrier signal in inductively powered wireless devices, such as biomedical implants, radio-frequency identification (RFID) tags, and smartcards to generate an on-chip dc supply. Expand
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An Integrated Power-Efficient Active Rectifier With Offset-Controlled High Speed Comparators for Inductively Powered Applications
  • H. Lee, Maysam Ghovanloo
  • Engineering, Computer Science
  • IEEE Transactions on Circuits and Systems I…
  • 31 January 2011
TLDR
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. Expand
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Optimization of Data Coils in a Multiband Wireless Link for Neuroprosthetic Implantable Devices
TLDR
We have presented a novel method for the design and optimization of a multiband wireless link that has a dedicated carrier signal and a coil/antenna pair for every major function that is expected from the wireless link across the skin barrier. Expand
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A compact large Voltage-compliance high output-impedance programmable current source for implantable microstimulators
TLDR
A new CMOS current source is described for biomedical implantable microstimulator applications, which utilizes MOS transistors in deep triode region as linearized voltage controlled resistors (VCR). Expand
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Optimal Design of Wireless Power Transmission Links for Millimeter-Sized Biomedical Implants
TLDR
This paper presents a design methodology for RF power transmission to millimeter-sized implantable biomedical devices. Expand
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