Yazar "Yalcinkaya, Arda D." seçeneğine göre listele

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    An Optoelectrical, Standard CMOS-Based Active Catheter Tracking System for MRI
    (Elsevier Science Bv, 2014) Camli, Berk; Sarioglu, Baykal; Yalcinkaya, Arda D.
    A fully optical active catheter tracking system compatible with 3T MRI environment is presented. It replaces conducting cables with optical fibers to reduce RF-induced heating problem. Proposed system consists of a MEMS-based microstructure array and an IC driving it. The IC houses an RF receiver block and an optoelectrical power supply. A prototype IC was fabricated in UMC 0.18 mu m CMOS process. Measurements indicate that the supply unit is able to provide 2.18mA at 1.2V supply, when a laser beam of 80mW power at its source is applied to IC. The system is operational at laser source power levels above 40mW. (C) 2014 The Authors. Published by Elsevier Ltd.
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    Photodiodes for Monolithic CMOS Circuit Applications
    (IEEE-Inst Electrical Electronics Engineers Inc, 2014) Camli, Berk; Sarioglu, Baykal; Yalcinkaya, Arda D.
    An optoelectrical power supply unit compatible with standard CMOS processes designed for microscale applications is presented. The system is based on an earlier version consisting of a photodiode that converts optical power to electrical power, and a dc/dc converter that increases the photodiode anode voltage to desirable levels. It has the ability to operate continuously or intermittently. The latter operation mode employs additional system elements and requires the modulation of the input laser beam. A prototype was fabricated in UMC 0.18-mu m triple-well standard CMOS process along with a direct conversion self-mixing receiver block on a die of 1525 mu m x 1525 mu m area. Performance measurements were done using a laser source of 650-nm wavelength at different power levels. For an input laser power of 80 mW, the source can provide an output current of 2.18 mA at a supply voltage of 1.2 V. The proposed system can be used to power integrated digital and low-power analog communication and medical microsystems.