Yazar "Cicekoglu, Oguzhan" seçeneğine göre listele

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    Current mode MOSFET-only third order Butterworth low pass filter with DTMOS tuning technique
    (Springer, 2016) Uygur, Atilla; Metin, Bilgin; Kuntman, Hakan; Cicekoglu, Oguzhan
    A new low-voltage, MOSFET-only, third order low-pass filter is proposed. The circuit employs only MOSFETs operating in saturation region. The transconductance gains and the parasitic gate to source capacitances of the MOSFETs represent resistive and capacitive elements of the filter. Using TSMC 0.18 mu m technology parameters the circuit is simulated, non-ideal effects have been investigated and dynamic threshold voltage MOS tuning technique has been developed for the filter circuit to suppress the non-idealities. In this tuning technique, bulk terminals of MOS transistors are used to adjust the biasing point of the circuit by changing the threshold voltages of the MOS transistors. This gives the designers more flexibility than conventional tuning methods and allows low voltage operation when several transistors are stacked over each other. The resulting circuit is capable of operation at high frequencies with low power consumption due to the usage of significantly less number of transistors than conventional active block-based filtering circuits.
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    High Performance Wideband CMOS CCI and its Application in Inductance Simulator Design
    (Univ Suceava, Fac Electrical Eng, 2012) Arslan, Emre; Metin, Bilgin; Herencsar, Norbert; Koton, Jaroslav; Morgul, Avni; Cicekoglu, Oguzhan
    In this paper, a new, differential pair based, low-voltage, high performance and wideband CMOS first generation current conveyor (CCI) is proposed. The proposed CCI has high voltage swings on ports X and Y and very low equivalent impedance on port X due to super source follower configuration. It also has high voltage swings (close to supply voltages) on input and output ports and wideband current and voltage transfer ratios. Furthermore, two novel grounded inductance simulator circuits are proposed as application examples. Using HSpice, it is shown that the simulation results of the proposed CCI and also of the presented inductance simulators are in very good agreement with the expected ones.
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    MOS-Only Third Order Butterworth Filter with DTMOS Tuning Technique for High Frequency Applications
    (IEEE, 2015) Uygur, Atilla; Meting, Bilgin; Cicekoglu, Oguzhan; Kuntman, Hakan
    In this paper, a new low-voltage, MOS-only, third order low-pass filter is proposed. The core circuit consists of only three MOSFETs and their parasitic gate to source capacitances as passive elements. Using TSMC 0.18 mu m technology parameters, the circuit with all biasing elements included consumes just 0.69mW for a cut-off frequency higher than 200MHz under a single supply of 1.8V. Non-ideal effects have been investigated and dynamic threshold voltage MOS (DTMOS) tuning technique has been developed for the filter circuit to suppress the non-idealities. Resulting circuit is capable of operation at high frequencies with low power consumption due to the usage of significantly less number of transistors than conventional active block-based filtering circuits.