scholarly journals Active Filter Design using Bulk Driven Operational Transconductance Amplifier Topology

2013 ◽  
Vol 3 (1) ◽  
pp. 329-333
Author(s):  
V.J.K. Kishor Sonti ◽  
◽  
C. Karthick
Keyword(s):  
Filter Design ◽  
Active Filter ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier

scholarly journals Programmable Voltage-Mode Multifunction Filter Using Two Current Conveyors and One Operational Transconductance Amplifier

1996 ◽  
Vol 19 (3) ◽  
pp. 133-138 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Azhar Quddus
Keyword(s):  
Low Temperature ◽  
Active Filter ◽  
Current Conveyors ◽  
Operational Transconductance Amplifier ◽  
Voltage Mode ◽  
Transconductance Amplifier ◽  
Biquadratic Filter ◽  
Multifunction Filter ◽  
Single Input

A new voltage-mode active-filter with single input and three outputs is presented. The parameters of the proposed filter are programmable and the filter uses grounded capacitors. The proposed circuit can simultaneously realize lowpass, highpass, and bandpass biquadratic filter functions and enjoys low temperature sensitivities.

Bulk linearized CMOS differential pair transconductor for continuous-time OTA-C filter design

2014 ◽  
Vol 62 (1) ◽  
pp. 77-84 ◽  
Author(s):  
B. Pankiewicz ◽  
S. Szczepański ◽  
M. Wójcikowski
Keyword(s):  
Transfer Function ◽  
Analytical Solution ◽  
Input Signal ◽  
Continuous Time ◽  
Low Voltage ◽  
Filter Design ◽  
Current Transfer ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier ◽  
Differential Pair

Abstract In this paper, the MOS differential pair driven simultaneously from gates and bulk terminals is described. An approximated analytical solution of the voltage to current transfer function has been found for the proposed circuit. Four possible combinations of gate and bulk connections of the input signal are presented. Basing on the configuration giving the best linearity, the operational transconductance amplifier (OTA) has been designed and compared, by computer simulations, to the amplifier utilizing the gate driven classic MOS pair. 3rd order filters using the OTAs with linearized and simple MOS pair have been designed and the resulting parameters have been compared. Linearization through the presented simultaneous use of gate and bulk terminals seems to be useful for low voltage applications.

scholarly journals Electronically Adjustable Emulator of the Fractional-Order Capacitor

2019 ◽  
Vol 25 (6) ◽  
pp. 28-34 ◽  
Author(s):  
Jan Dvorak ◽  
David Kubanek ◽  
Norbert Herencsar ◽  
Aslihan Kartci ◽  
Panagiotis Bertsias
Keyword(s):  
Fractional Order ◽  
Frequency Band ◽  
Filter Design ◽  
Current Conveyor ◽  
Electronic Control ◽  
Operational Transconductance Amplifier ◽  
Tunable Capacitors ◽  
Transconductance Amplifier ◽  
Electronically Tunable ◽  
Electronically Controllable

This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I), where the passive elements in the topology are replaced by electronically adjustable components. The proposed emulator is based on OTA (Operational Transconductance Amplifier) and VDCC (Voltage Differencing Current Conveyor). The electronically controllable resistors are implemented by OTAs. The electronically tunable capacitors are implemented using capacitance multipliers, which employ VDCCs. The proposed structure provides the electronic control of the order and electronic shifting of the frequency band of the approximation validity. The proposed FOC emulator is also used for fractional-order filter design. The proposed circuits are verified using PSpice simulations.

scholarly journals Novel CCI-OTA-Based Grounded Capacitor Current-Mode Biquadratic Bandpass and Lowpass Filters

1994 ◽  
Vol 16 (2) ◽  
pp. 127-133
Author(s):  
Muhammad Taher Abuelma'atti
Keyword(s):  
First Generation ◽  
Current Mode ◽  
Active Filter ◽  
Current Conveyor ◽  
Lowpass Filter ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier

A novel current-mode active filter topology using a first generation current conveyor (CCI) and an operational transconductance amplifier (OTA) is presented. Using this topology, grounded-capacitor biquadratic bandpass and lowpass filter sections, with at most five one-port passive elements, are realized. In these realizations, the parameterω0can be adjusted without disturbing the parameterω0/ Q0

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