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Yayın A low loss, low voltage and high Q active inductor with multi-regulated cascade stage for RF applications(Institute of Electrical and Electronics Engineers Inc., 2015) Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, RamazanNumerous structural planning of active inductors have been proposed as of not long ago in literature which showing tuning conceivable outcomes, low chip area and offering integration facility, they constitute promising architecture to replace passive inductors in RF circuits. The modified of a conventional active inductor based on Gyrator-C topology consisting of both transconductance stages realized by common-source configuration with multi-regulated cascade stage is presented. The Q factor and value of active inductor is adjusted with bias current and flexible capacitance, respectively. Multi regulated cascade stage is used to boost gain of input impedance and inductor value and decrease series resistance of designed inductor witch caused loss. The circuit is suitable for low voltage operation, high quality factor and low power dissipation. Simulation results are provided for 90 nm TSMC CMOS process with 1 V supply voltage. Self-resonance frequency and power consumption of active inductor is 8.9 GHz and 1.2 mW, respectively.Yayın Dual electrode capacitive micromachined ultrasonic transducer array for 1-D intracardiac echocardiography (ICE)(American Society of Mechanical Engineers (ASME), 2007) Güldiken, Rasim Oytun; Zahorian, Jaime S.; Karaman, Mustafa; Değertekin, Fahrettin LeventWe designed and fabricated a 64 element 1-D linear dual electrode Capacitive Micromachined Ultrasonic Transducer (CMUT) array operating at 9.5 MHz for Intracardiac Echocardiography (ICE). The dual electrode CMUT structure increases the overall sensitivity by 12.6dB (6.2dB in receive sensitivity; 6.4dB in output pressure) when compared to optimized single electrode CMUT. We report peak output pressure of 2.3MPa on the CMUT surface when 170V AC and 180V DC is applied. This significant performance increase makes the CMUT more competitive with their piezoelectric counterparts.Yayın Single active device metamutator; Its application to impedance simulation and in particular to FDNR(IEEE, 2017) Minayi, Elham; Göknar, İzzet Cemhe proposed Metamutator configuration employs only one Fully Differential Current Conveyor (FDCCII) which has 9 terminals including ground. By properly interconnecting these terminals a 4-port Metamutator is obtained without use of any other external element. It maintains the following advantages: (i) use of only one active element: less is the number of active devices less is the amount of disparity, (ii) possibility of realizing Memristors, Capacitors, Inductors, Frequency Dependent Negative Resistor (FDNR), which can be used to make integrated circuit active filters, (iii) no need to impose component choice constraints. SPICE simulations' results using TSMC 0.18 mu m CMOS process parameters and +/- 0.9V supply voltages validate the theoretical predictions.
