scholarly journals Realization of Filter/Inverse Filter Topologies using single FTFNTA

2021 ◽  
Author(s):  
Ravendra Singh ◽  
Dinesh Prasad
Keyword(s):  
Active Filter ◽  
Inverse Filter ◽  
Spice Simulation ◽  
Circuit Topology ◽  
Transconductance Amplifier ◽  
Viable Solution ◽  
Low Pass ◽  
Band Pass ◽  
Four Terminal Floating Nullor ◽  
High Pass

Abstract In this manuscript, two different topologies are presented for the realization of a conventional filter/inverse filter using the Four Terminal Floating Nullor Transconductance Amplifier (FTFNTA). The first topology can synthesize the inverse low-pass (ILP), inverse high-pass (IHP), and inverse band-pass (IBP) filter with applicable impedance choices. Subsequently, another topology that can synthesize conventional low-pass (LP), and band-pass (BP) active filter, as well as inverse high-pass (IHP), and inverse band-pass (IBP) filter from the same circuit topology with a viable solution of impedances as resistor/capacitor. To verify the workability of both topologies, SPICE simulation is performed using 180nm CMOS TSMC technology.

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.

scholarly journals CFOA-Based New Structure of Fractional Order Inverse Filters

2020 ◽  
Vol 8 (5) ◽  
pp. 4501-4504
Keyword(s):  
Stability Analysis ◽  
Fractional Order ◽  
Operational Amplifiers ◽  
Inverse Filter ◽  
Current Feedback ◽  
Current Feedback Operational Amplifiers ◽  
Low Pass ◽  
Band Pass ◽  
High Pass

This paper presents a CFOA-based fractional order inverse filter (FOIF) structure. Proposed structure utilizes two current feedback operational amplifiers (CFOAs), two fractional capacitors (FCs) and two resistors to design FOIFs to realize fractional order inverse low pass (FOILP), fractional order inverse high pass (FOIHP) and fractional order inverse band pass (FOIBP) responses. The proposed configuration of FOIFs is simulated in PSPICE using AD844 type CFOAs. Stability analysis and MATLAB simulations are also carried out to authenticate the theoretical propositions.

scholarly journals CMOS CDBA-Based Inverse Filter Structure

2020 ◽  
Vol 9 (3) ◽  
pp. 2226-2231
Keyword(s):  
Cmos Technology ◽  
Experimental Results ◽  
Band Pass Filter ◽  
Inverse Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Structure ◽  
Low Pass ◽  
Band Pass ◽  
High Pass

This paper presents a voltage-mode(VM) tunable multifunction inverse filter configuration employing current differencing buffered amplifiers (CDBA). The presented structure utilizes two CDBAs, two/three capacitors and four/five resistors to realize inverse low pass filter (ILPF), inverse high pass filter (IHPF), inverse band pass filter (IBPF), and inverse band reject filter(IBRF) from the same circuit topology by suitable selection(s) of the branch admittances(s). PSPICE simulations have been performed with 0.18µm TSMC CMOS technology to validate the theory. Some sample experimental results have also been provided using off-the-shelf IC AD844 based CDBA.

scholarly journals CDBA Based Universal Inverse Filter

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Rajeshwari Pandey ◽  
Neeta Pandey ◽  
Tushar Negi ◽  
Vivek Garg
Keyword(s):  
Inverse Filter ◽  
Current Feedback ◽  
Pass Filter ◽  
Low Pass ◽  
Band Pass ◽  
Current Feedback Operational Amplifier ◽  
High Pass ◽  
Theoretical Results ◽  
Current Difference ◽  
Filter Configuration

Current difference buffered amplifier (CDBA) based universal inverse filter configuration is proposed. The topology can be used to synthesize inverse low-pass (ILP), inverse high-pass (IHP), inverse band-pass (IBP), inverse band-reject (IBR), and inverse all-pass filter functions with appropriate admittance choices. Workability of the proposed universal inverse filter configuration is demonstrated through PSPICE simulations for which CDBA is realized using current feedback operational amplifier (CFOA). The simulation results are found in close agreement with the theoretical results.

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.

GENERATION OF THE MINIMUM COMPONENT OSCILLATORS FROM SALLEN KEY FILTERS

2011 ◽  
Vol 20 (06) ◽  
pp. 1165-1183 ◽  
Author(s):  
AHMED M. SOLIMAN
Keyword(s):  
Current Conveyor ◽  
Passive Component ◽  
Single Input Single Output ◽  
Single Output ◽  
Transconductance Amplifier ◽  
Low Pass ◽  
Band Pass ◽  
New Generation ◽  
High Pass ◽  
Impedance Converter

Two new minimum passive component oscillators using inverting current conveyor (ICCII–) acting as a voltage negative impedance converter are generated from the Sallen Key low-pass and high-pass filters. It is also shown that the Sallen Key low-pass, high-pass, and band-pass filters are the origin of the three minimum component oscillators using the current conveyor acting as a current negative impedance converter. In addition, it is also shown that the Sallen Key high-pass and band-pass filters are the origin of the two minimum component oscillators using single input single output transconductance amplifier as the active element. Although this paper is considered partially a review paper it includes new generation methods and new minimum component oscillator circuit realizations. Simulation results for the new oscillators using ICCII– are included.

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 Realization of Inverse Active Filters Using Single Current Differencing Buffered Amplifier

2021 ◽  
Vol 13 (1) ◽  
pp. 85-99
Author(s):  
T. K. Paul ◽  
S. Roy ◽  
R. R. Pal
Keyword(s):  
Active Filters ◽  
Inverse Filter ◽  
Current Feedback ◽  
Low Pass ◽  
Band Pass ◽  
Simulation Results ◽  
Current Feedback Operational Amplifier ◽  
High Pass ◽  
Theoretical Results ◽  
Selection Of

The authors introduce a new single current differencing buffered amplifier (CDBA) based inverse filter configuration. By appropriate selection of admittances, different inverse filter circuits like inverse high-pass (IHP) circuit, inverse low-pass (ILP) circuit, inverse band-reject (IBR) circuit and inverse band-pass (IBP) circuit can be realized from the same configuration. The capacitors used here are grounded/virtually grounded for all the realizations. The performances of the proposed filters have been judged by using CMOS structure of CDBA with TSMC 0.35 µm technology as well as by using the available IC of current feedback operational amplifier (CFOA) i.e. AD844 based CDBA. The simulation results agreed well with the theoretical results. Monte-Carlo simulation has also been performed to check the robustness of the proposed configuration.

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.

NOVEL VOLTAGE-MODE UNIVERSAL FILTER USING ONLY TWO CDBAs

2005 ◽  
Vol 14 (01) ◽  
pp. 159-164 ◽  
Author(s):  
SUDHANSHU MAHESHWARI ◽  
IQBAL A. KHAN
Keyword(s):  
Pass Band ◽  
Universal Filter ◽  
Input Selection ◽  
Voltage Mode ◽  
Single Output ◽  
Control Computer ◽  
Low Pass ◽  
Band Pass ◽  
Pass Through ◽  
High Pass

A novel voltage-mode universal filter employing only two current differencing buffered amplifiers (CDBAs) is proposed. The filter uses four inputs and single output to realize six responses, viz. low-pass, high-pass, inverting band-pass, noninverting band-pass, band-elimination, and all-pass through input selection with independent pole-Q control. Computer simulation results using SPICE are also given to verify the theory.

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