Ahmet Gökçen

Second Order Analog Filter Design Using a Single OTRA Suitable for Integration

A configuration for the realization of voltage-mode second-order filters employing a single operational transresistance amplifier as the active element is presented. This topology can synthesize lowpass, highpass, bandpass, notch and allpass filtering functions. Theoretical analysis is verified with SPICE simulation results.

Design of voltage-mode multifunction filter using single current operational amplifier

In this study, a new voltage-mode multifunction filter based on single current operational amplifier (COA) is presented. The proposed topology employs single CMOS based COA and it provides lowpass, highpass, bandpass and notch filter functions by modifying only three admittances. The COA used in this study is implemented by CMOS based current conveyors and the validity of the proposed circuit is verified by PSPICE simulation programme. In simulation, the MOSIS 0.35 μm CMOS process parameters are used. It is seen that the simulation results agree very well with the theoretical analysis. Also, the proposed circuit achieves a good THD (Total Harmonic Distortion) performance and the sensitivities of angular frequency to the passive components are shown to be low.

Realization of voltage mode notch filter based on current differencing transconductance amplifier

In this study, a new voltage mode notch filter based on Current Differencing Transconductance Amplifier (CDTA), which is a recently common used active building block in analog signal processing applications, is presented. The proposed filters performance has been evaluated by PSPICE. In simulation the MOSIS CMOS 0.35μm model parameters used for CMOS based CDTA. The simulation results show that the proposed filter has high performance in terms of working both at low and high frequencies. It was seen that the simulation results verified the theory. Also, the sensitivities of the passive circuit components are shown to be low.

Second order analog filter design using a single ICCII

A configuration for the realization of voltage mode second-order filters employing a single second generation inverting current conveyor as the active element is presented. This topology can synthesize lowpass, highpass, bandpass, notch and allpass filtering functions. Theoretical analysis is verified with SPICE simulation results.