scholarly journals Realization of Voltage-mode Multifunction Biaquadratic Filter Using Minimum Number of Active Element

2019 ◽  
Vol 559 ◽  
pp. 012010
Author(s):  
Winai Jaikla ◽  
Surapong Siripongdee ◽  
Peerawut Suwanjan
Keyword(s):  
Active Element ◽  
Voltage Mode ◽  
Minimum Number

scholarly journals New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

2013 ◽  
Vol 64 (2) ◽  
pp. 65-75 ◽  
Author(s):  
Roman Šotner ◽  
Norbert Herencsár ◽  
Jan Jeřábek ◽  
Radek Dvořák ◽  
Aslihan Kartci ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Active Element ◽  
Frequency Tuning ◽  
Current Gain ◽  
Intrinsic Resistance ◽  
Current Feedback ◽  
Voltage Mode ◽  
Simultaneous Control ◽  
Bicmos Technology ◽  
Electronically Tunable

In this paper, a new electronically tunable quadrature oscillator (ETQO) based on two modified versions of current feedback amplifiers (CFAs), the so called double current controlled CFA (DCC-CFAs) is presented. The frequency of oscillation (FO) of the proposed voltage-mode (VM) ETQO is electronically adjustable by current gain or by varying the intrinsic resistance of the X terminal of the active element used. The condition of oscillation (CO) is adjustable by current gain independently with respect to frequency of oscillation. Simultaneous control of current gain and intrinsic resistance allows linear control of FO and provides extension of frequency tuning range. In the proposed circuit all the capacitors are grounded. The use of only grounded capacitors makes the proposed circuit ideal for integrated circuit implementation. The presented active element realized by using BiCMOS technology and the behavior of proposed circuit are discussed in details. The theoretical results are verified by SPICE simulations based on CMOS ON-Semi C5 0.5 μm and bipolar ultra high frequency transistor arrays Intersil HFA 3096 process parameters.

Some Analog Filters of Reduced Complexity with Shelving and Multifunctional Characteristics

2018 ◽  
Vol 27 (10) ◽  
pp. 1850150 ◽  
Author(s):  
Sudhanshu Maheshwari
Keyword(s):  
Power Supply ◽  
Active Element ◽  
Current Conveyor ◽  
Analog Filters ◽  
First Order ◽  
Voltage Mode ◽  
Experimental Support ◽  
Reduced Complexity ◽  
Simulation Results ◽  
The One

This paper presents first-order voltage-mode filters using a single current conveyor with an additional X-stage, and passive elements. The new circuits have multifunction capability, and also realize low-shelf, high-shelf and band-shelf functions. The study is carried out on the effects of non-idealities, parasitic elements, and loading on the performance of proposed circuits. Active and passive sensitivities are also analyzed. The active element, extra-X current conveyor used for designing new circuits is simpler than most of the one active element and two passive elements’ based circuits. Detailed comparisons are carried out with relevant available works, and the new circuits are found to be more compact and exhibit higher frequency performances. The simulation results using 0.25[Formula: see text][Formula: see text]m CMOS parameters with [Formula: see text]1.25[Formula: see text]V power-supply are shown to verify the proposed circuits. The proposed circuits are also verified through simulations. Experimental support is given using AD-844 ICs to strengthen the validity of the proposed circuits.

Voltage Differencing Gain Amplifier-Based nth-Order Low-Pass Voltage-Mode Filter

2018 ◽  
Vol 27 (06) ◽  
pp. 1850089 ◽  
Author(s):  
Zehra Gulru Cam Taskiran ◽  
Herman Sedef ◽  
Fuat Anday
Keyword(s):  
General Formula ◽  
Building Block ◽  
Transfer Functions ◽  
Building Blocks ◽  
Voltage Mode ◽  
Active Elements ◽  
Filter Structure ◽  
Low Pass ◽  
Minimum Number ◽  
Simple Filter

In this paper, a new active-C filter realizing the general [Formula: see text]th-order low-pass voltage transfer functions using [Formula: see text] voltage differencing gain amplifiers (VDGAs) is presented. In this realization minimum number of equal-valued grounded capacitors and [Formula: see text] active elements are used. Due to the adjustability of the transconductance of the VDGA with current, different gains can be realized using the same building block and a simple filter structure can be created. The filter which is composed of VDGA building blocks is suitable for integration and advantageous in terms of eliminating parasitic effects because all capacitors are grounded and the filter structure has no resistors. All simulations are performed on SPICE and the accuracy of this method is validated experimentally with commercially available products upon on-board circuit.

scholarly journals Voltage Mode Universal Biquad Using CCCII

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Ashish Ranjan ◽  
Sajal K. Paul
Keyword(s):  
Pass Band ◽  
Current Conveyors ◽  
Ic Design ◽  
Passive Components ◽  
Voltage Mode ◽  
Single Output ◽  
Low Pass ◽  
Minimum Number ◽  
Band Pass ◽  
Low Sensitivity

This paper proposes a multi-input single-output (MISO) second-order active-C voltage mode (VM) universal filter using two second-generation current-controlled current conveyors (CCCIIs) and two equal-valued capacitors. The proposed circuit realizes low pass, band pass, high pass, all pass, and notch responses from the same topology. The filter uses-minimum number of passive components and no resistor which is suitable for IC Design. The filter enjoys low-sensitivity performance and exhibits electronic and orthogonal tunability of pole frequency () and quality factor () via bias current of CCCIIs. PSPICE simulation results confirm the theory.

scholarly journals Voltage-Mode All-Pass Filters Including Minimum Component Count Circuits

2007 ◽  
Vol 2007 ◽  
pp. 1-5 ◽  
Author(s):  
Sudhanshu Maheshwari
Keyword(s):  
Active Element ◽  
Passive Component ◽  
Output Impedance ◽  
Passive Components ◽  
First Order ◽  
Voltage Mode ◽  
Pspice Simulation ◽  
Simulation Results ◽  
A Current

This paper presents two new first-order voltage-mode all-pass filters using a single-current differencing buffered amplifier and four passive components. Each circuit is compatible to a current-controlled current differencing buffered amplifier with only two passive elements, thus resulting in two more circuits, which employ a capacitor, a resistor, and an active element, thus using a minimum of active and passive component counts. The proposed circuits possess low output impedance, and hence can be easily cascaded for voltage-mode systems. PSPICE simulation results are given to confirm the theory.

A New Voltage-Mode Multifunctional Filter Using Only Two Voltage Followers and a Minimum Number of Passive Elements

2015 ◽  
Vol 24 (06) ◽  
pp. 1550085 ◽  
Author(s):  
Firat Yucel ◽  
Erkan Yuce
Keyword(s):  
Experimental Tests ◽  
Passive Component ◽  
High Input ◽  
Voltage Mode ◽  
Low Power Dissipation ◽  
Low Pass ◽  
Minimum Number ◽  
Component Matching ◽  
Matching Constraints ◽  
High Pass

A new voltage-mode (VM) multifunctional filter using only two voltage followers (VFs), two resistors and two capacitors is proposed. The proposed filter with two inputs and two outputs can provide low-pass (LP) and high-pass (HP) responses. It does not need any critical passive component matching constraints. Additionally, it has low output impedances, low power dissipation and adequately low THD values. However, it does not have high input impedances; accordingly, it requires an extra VF to obtain high input impedance. A number of time domain and frequency domain simulations and experimental tests are performed to verify the claimed theory.

scholarly journals Voltage-Mode Universal Biquadratic Filter Using Two OTAs

2004 ◽  
Vol 27 (2) ◽  
pp. 85-89 ◽  
Author(s):  
Jiun-Wei Horng
Keyword(s):  
High Input ◽  
High Input Impedance ◽  
Passive Components ◽  
Operational Transconductance Amplifiers ◽  
Voltage Mode ◽  
Biquadratic Filter ◽  
Minimum Number ◽  
Transconductance Amplifiers ◽  
Output Filter ◽  
Filter Response

A four-inputs and two-outputs voltage-mode universal biquadratic filter using only two operational transconductance amplifiers (OTAs) and two capacitors is presented. The new circuits offer several advantages, such as employing the minimum number of active and passive components (two OTAs and two capacitors); the versatility to synthesize highpass, bandpass, lowpass, notch and allpass responses; high input impedance and employing only grounded capacitors for bandpass and lowpass filter realizations; some derived filter types enjoy the availability of one more simultaneously output filter response and good sensitivities performance

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