scholarly journals Single VDTA Based Dual Mode Single Input Multioutput Biquad Filter

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Rajeshwari Pandey ◽  
Neeta Pandey ◽  
Navin Singhal
Keyword(s):  
Current Mode ◽  
Angular Frequency ◽  
Cmos Process ◽  
Dual Mode ◽  
Biquad Filter ◽  
Transconductance Amplifier ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
High Pass

This paper presents a dual mode, single input multioutput (SIMO) biquad filter configuration using single voltage differencing transconductance amplifier (VDTA), three capacitors, and a grounded resistor. The proposed topology can be used to synthesize low pass (LP), high pass (HP), and band pass (BP) filter functions. It can be configured as voltage mode (VM) or current mode (CM) structure with appropriate input excitation choice. The angular frequency (ω0) of the proposed structure can be controlled independently of quality factor (Q0). Workability of the proposed biquad configuration is demonstrated through PSPICE simulations using 0.18 μm TSMC CMOS process parameters.

scholarly journals Transadmittance Type Universal Current-Mode Biquad Filter Using VDTAs

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Dinesh Prasad ◽  
Mayank Srivastava ◽  
D. R. Bhaskar
Keyword(s):  
Process Parameters ◽  
Current Mode ◽  
Angular Frequency ◽  
Pspice Simulations ◽  
Biquad Filter ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
Transconductance Amplifiers ◽  
High Pass

A new resistorless single-input-multi-output (SIMO) universal transadmittance (TA) type filter employing two voltage differencing transconductance amplifiers (VDTA) and two grounded capacitors is proposed. The proposed topology realizes simultaneously low pass (LP), high pass (HP), and band pass (BP) filter functions. Band rejects (BR) and all pass (AP) filters are also realizable through appropriate connections of currents. The proposed configuration also offers independent control of natural angular frequency (ω0) and bandwidth (BW) and low active and passive sensitivities. The workability of proposed configuration has been demonstrated through PSPICE simulations with TSMC CMOS 0.18 μm process parameters.

scholarly journals Dual-mode multifunction filter realized with a single voltage differencing gain amplifier (VDGA)

2021 ◽  
Vol 41 (2) ◽  
Author(s):  
Worapong Tangsrirat ◽  
Tattaya Pukkalanun ◽  
Orapin Channumsin
Keyword(s):  
Current Mode ◽  
Angular Frequency ◽  
Cmos Process ◽  
Dual Mode ◽  
Biquad Filter ◽  
Multifunction Filter ◽  
Circuit Component ◽  
Simulation Results ◽  
Quality Factor Q ◽  
Circuit Configuration

This article presents the dual-mode multifunction biquad filter realized employing only a single voltage differencing gain amplifier (VDGA), one resistor and three capacitors. The proposed filterwith one input and three outputs can configure as voltage-mode or current-mode filter circuit with the appropriate input injection choice. It can also synthesis the three standard filter functions, which are highpass, bandpass, and lowpass responses without modifying the circuit configuration. Orthogonal adjustment between the natural angular frequency (o) and the quality factor (Q) of the filter is achieved. Detail analysis of non-ideal VDGA effects and circuit component sensitivity are included. The circuit principle is verified by means of simulation results with TSMC 0.35-m CMOS process parameters.

Programmable Universal Filters Using Current Conveyor Transconductance Amplifiers

2017 ◽  
Vol 26 (07) ◽  
pp. 1750121 ◽  
Author(s):  
Thanat Nonthaputha ◽  
Montree Kumngern
Keyword(s):  
Transfer Functions ◽  
Current Mode ◽  
Current Conveyor ◽  
Pass Band ◽  
Cmos Process ◽  
Low Pass ◽  
Band Pass ◽  
Transconductance Amplifiers ◽  
Biquadratic Filters ◽  
High Pass

This paper presents new programmable universal biquadratic filters using current conveyor transconductance amplifiers (CCTAs) by which both voltage- and current-mode filters can be obtained. The proposed filters use second-generation current conveyor (CCII) which is the first stage of CCTA to operate as current conveyor analog switch (CCAS) and this CCAS will be used to program the filtering functions such as low-pass, high-pass, band-pass, band-stop and all-pass filters. Unlike previous universal filters, the filtering functions of the proposed filters can be programmed using the bias currents of CCTAs without changing any input and output connections. The natural frequency and quality factor of all filtering functions can be controlled electronically and orthogonally using the bias currents of transconductance amplifiers. Also gain response of all transfer functions can be adjusted. The active and passive sensitivities of the filters are low. The proposed programmable filters have been simulated using 0.18[Formula: see text][Formula: see text]m CMOS process from TSMC. PSPICE simulation results are included to confirm workability of the proposed circuits.

scholarly journals DDCCTA-Based Universal filter and Quadrature Oscillator

2018 ◽  
Vol 3 (2) ◽  
pp. 18-21
Author(s):  
Rashmika Rai ◽  
◽  
S Indu
Keyword(s):  
Integrated Circuit ◽  
Notch Filter ◽  
Pass Band ◽  
Universal Filter ◽  
Passive Components ◽  
Transconductance Amplifier ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
High Pass

The study presents a universal filter and Oscillator obtain by applying only single input. All the passive components used are grounded which is suitable for integrated circuit implementation. In the circuit by applying for single input simultaneously low pass, High Pass, Band Pass, All Pass, and Notch filter is obtained by using two blocks of Differential Difference current conveyor transconductance amplifier.

Mixed-Mode Universal Biquad Filter Using OTAs

2019 ◽  
Vol 29 (10) ◽  
pp. 2050162 ◽  
Author(s):  
Data R. Bhaskar ◽  
Ajishek Raj ◽  
Pragati Kumar
Keyword(s):  
Integrated Circuit ◽  
Mixed Mode ◽  
Current Mode ◽  
Cmos Process ◽  
Design Environment ◽  
Single Output ◽  
Biquad Filter ◽  
Low Pass ◽  
Band Pass ◽  
Electronically Tunable

This paper introduces an electronically tunable mixed-mode universal biquad filter configuration employing four single output operational transconductance amplifiers (OTAs), one dual output OTA and two grounded capacitors (GCs) (ideal for integrated circuit implementation and absorbing shunt parasitic capacitances). The presented structure can realize all second-order filter functions, namely, low pass (LP), high pass (HP), band pass (BP), band reject (BR) and all pass (AP) responses in voltage mode (VM), current mode (CM), transresistance mode (TRM) and transconductance mode (TCM) using appropriate selection(s) of input signals. The cut-off frequency ([Formula: see text] and bandwidth (BW) of the realized filters can be tuned orthogonally through the transconductance (by varying the bias currents) of the OTAs. The proposed biquad configuration enjoys low active and passive sensitivities. The workability of this multifunctional biquad filter topology has been confirmed through simulations using MATLAB and Analog Design Environment (ADE) spectre tool provided by Cadence Virtuoso, using 0.18[Formula: see text][Formula: see text]m CMOS process parameter. The post-layout simulations have also been carried out to validate the theory.

Realization of Resistorless and Electronically Tunable Inverse Filters Using VDTA

2019 ◽  
Vol 28 (09) ◽  
pp. 1950143 ◽  
Author(s):  
Praveen Kumar ◽  
Neeta Pandey ◽  
Sajal K. Paul
Keyword(s):  
Cmos Technology ◽  
Angular Frequency ◽  
Pass Band ◽  
Passive Component ◽  
Inverse Filter ◽  
Transconductance Amplifier ◽  
Low Pass ◽  
Band Pass ◽  
Electronically Tunable ◽  
High Pass

This paper presents resistorless realization of inverse filters using voltage differencing transconductance amplifier (VDTA). First, four topologies are proposed which provide inverse low-pass, high-pass, band-pass, and band-reject responses. Subsequently, a unified inverse filter is also derived by incorporating two switches in the combination of proposed inverse low-pass and inverse band-pass topologies. This topology is capable of providing inverse low-pass, inverse high-pass, inverse band-pass, and inverse band-reject responses by appropriate switch settings. The proposed inverse filter structures are electronically tunable and use only grounded capacitors. The behavior of the proposed filters is also investigated for nonidealities. To verify the functionality of the proposed inverse filter circuits, SPICE simulation is carried out using 0.18-[Formula: see text]m CMOS technology parameters from TSMC. The effect of deviation in the active and passive component values on angular frequency is tested through Monte Carlo simulation.

A New Versatile Universal Biquad Configuration for Emerging Signal Processing Applications

2018 ◽  
Vol 27 (12) ◽  
pp. 1850196 ◽  
Author(s):  
Bhartendu Chaturvedi ◽  
Jitendra Mohan ◽  
Atul Kumar
Keyword(s):  
Second Generation ◽  
Current Mode ◽  
Pass Band ◽  
Current Conveyors ◽  
Fully Differential ◽  
Input Matching ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
High Pass

The paper introduces a new versatile universal biquadratic configuration based on two fully differential second generation current conveyors without need of input matching conditions. The proposed circuit consists of two fully differential second generation current conveyors, four resistors and two grounded capacitors. The proposed biquad configuration provides all five standard filtering responses: low-pass, high-pass, band-pass, band-reject and all-pass in voltage-mode, transadmittance-mode, current-mode and transimpedance-mode. The proposed circuit is single-input multiple-outputs type, so all responses are available simultaneously. Moreover, extra inverting amplifier and double-type amplifier are also not required in the proposed circuit for any filtering response. The nonideal and parasitic effects of fully differential second generation current conveyor on the proposed circuit have also been investigated. HSPICE simulation results have been incorporated to validate the proposal.

ELECTRONICALLY TUNABLE CURRENT-MODE UNIVERSAL BIQUAD FILTER USING DUAL-X CURRENT CONVEYORS

2009 ◽  
Vol 18 (04) ◽  
pp. 665-680 ◽  
Author(s):  
SHAHRAM MINAEI
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Biquad Filter ◽  
Low Pass ◽  
Band Pass ◽  
High Output Impedance ◽  
Electronically Tunable ◽  
High Pass ◽  
Theoretical Analyses ◽  
High Output

In this paper, an electronically tunable current-mode (CM) universal biquad filter is proposed. The proposed filter employs three dual-X second-generation current conveyors (DXCCIIs), two grounded capacitors and four NMOS transistors acting as resistors. The proposed filter simultaneously realizes standard filter functions such as low-pass (LP), band-pass (BP), and high-pass (HP) responses. The notch (NH) and all-pass (AP) functions can also be obtained by connecting appropriate output currents directly without using additional active elements. The output signals are obtained at high output impedance terminals, which is important for easy cascading in CM operation. SPICE simulation results are given to verify the theoretical analyses.

CURRENT-MODE ACTIVE-C FILTER EMPLOYING REDUCED NUMBER OF CCCII+s

2007 ◽  
Vol 16 (04) ◽  
pp. 507-516 ◽  
Author(s):  
SHAHRAM MINAEI ◽  
ERKAN YUCE
Keyword(s):  
Current Mode ◽  
Pass Band ◽  
Passive Component ◽  
Resistorless Filter ◽  
Low Pass ◽  
Component Matching ◽  
Band Pass ◽  
High Output Impedance ◽  
Quality Factor Q ◽  
High Pass

In this paper, a universal current-mode second-order active-C filter for simultaneously realizing low-pass, band-pass and high-pass responses is proposed. The presented filter employs only three plus-type second-generation current-controlled conveyors (CCCII+s). This filter needs no critical active and passive component matching conditions and no additional active and passive elements for realizing high output impedance low-pass, band-pass and high-pass characteristics. The angular resonance frequency (ω0) and quality factor (Q) of the proposed resistorless filter can be tuned electronically. To verify the theoretical analysis and to exhibit the performance of the proposed filter, it is simulated with SPICE program.

A New Tunable SISO Filter Designed in 40nm CMOS for Bilateral Inverse and Buffer Filtering Applications

2021 ◽  
pp. 2150240
Author(s):  
Umar Mohammad ◽  
Fang Tang ◽  
Shu Zhou ◽  
Mohd Yusuf Yasin
Keyword(s):  
Simulation Analysis ◽  
Pass Band ◽  
Single Input Single Output ◽  
Change Of Direction ◽  
Single Output ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
Parasitic Components ◽  
High Pass

A new study imitating the design and implementation of single-input–single-output (SISO) filters as bilateral filters has been presented in this paper. Second generation current controlled current conveyor (CCCII), being a popular low power active element was considered for the realization of the proposed design. Complete design, analysis and implementation of the voltage mode SISO filter was done using only two CCCII’s and two passive parasitic components. The striking feature of this work is that the proposed design can be made to work at either the input node or the output node, as well as in the cases; the change of direction changes the filter into an inverse filter and buffer filter. Basic filter applications like low-pass, high-pass, band-pass and band-stop were aimed to check the uniformity of the proposed design at different frequencies. Results perceived from the simulation study were fare enough on both the side nodes of the proposed design. Categorically, the circuit can be aimed to work in lieu of a filter transceiver. The consistency of the circuit was analyzed by the nodal analysis. Whereas the working performance was enormously analyzed and evaluated during the simulation analysis. The proposed design was simulated in HSPICE tool to exhibit and exploit the delivery, using the 45[Formula: see text]nm predictive technology model (PTM) parameters, with [Formula: see text][Formula: see text]V rail to rail voltages. Maximum power consumption of the circuit is around 138.5[Formula: see text][Formula: see text]W. Finally, the design was also implemented in Cadence Virtuoso using 40[Formula: see text]nm SMIC parameters.

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