scholarly journals Current-Controlled Current-Mode Quadrature Oscillator Using Translinear Current Conveyors

2019 ◽  
Vol 3 (1) ◽  
pp. 29
Author(s):  
Montree Kumngern
Keyword(s):  
Integrated Circuit ◽  
Second Generation ◽  
Current Mode ◽  
Current Conveyors ◽  
Circuit Implementation ◽  
Quadrature Oscillator ◽  
External Bias ◽  
Condition Of Oscillation ◽  
Simulation Results ◽  
A Current

In this paper, a current-mode quadrature oscillator using second-generation current conveyors (CCIIs) is presented. The proposed oscillator consists of two CCIIs, two grounded capacitors and two grounded resistors. The circuit is suitable for integrated circuit implementation by using grounded capacitors. In addition, a new current-controlled current-mode quadrature oscillator using two current controlled second generation current conveyors (CCCIIs) and two grounded capacitors can be obtained by replacing CCIIs and resistors series at X terminals with CCCIIs. The condition of oscillation and frequency of oscillation can be orthogonally controlled. The frequency of oscillation can be controlled by grounded resistors and external bias currents. The proposed circuits have been simulated by SPICE simulations. The simulation results are confirmed the proposed theory.

scholarly journals Current-Mode Third-Order Quadrature Oscillator Using CDTAs

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Jiun-Wei Horng
Keyword(s):  
Theoretical Analysis ◽  
Phase Difference ◽  
Oscillation Frequency ◽  
Current Mode ◽  
Third Order ◽  
Quadrature Oscillator ◽  
Oscillation Condition ◽  
Transconductance Amplifiers ◽  
Simulation Results ◽  
A Current

This paper describes a current-mode third-order quadrature oscillator based on current differencing transconductance amplifiers (CDTAs). Outputs of two current-mode sinusoids with90°phase difference are available in the quadrature oscillator circuit. The oscillation condition and oscillation frequency are orthogonal controllable. The proposed circuit employs only grounded capacitors and is ideal for integration. Simulation results are included to confirm the theoretical analysis.

THREE-INPUTS-ONE-OUTPUT CURRENT-MODE UNIVERSAL BIQUAD USING TWO CURRENT CONVEYORS

2013 ◽  
Vol 22 (09) ◽  
pp. 1340001 ◽  
Author(s):  
JIUN-WEI HORNG ◽  
TO-YAO CHIU ◽  
CHING-PAO HSIAO ◽  
GUANG-TING HUANG
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Current Conveyors ◽  
Output Terminal ◽  
Biquadratic Filter ◽  
Component Matching ◽  
High Output Impedance ◽  
Very High ◽  
A Current ◽  
High Output

A current-mode universal biquadratic filter with three input terminals and one output terminal is presented. The architecture uses two current conveyors (CCs), two grounded capacitors and two grounded resistors; and can realize all standard second-order filter functions — highpass, bandpass, lowpass, notch and allpass. Moreover, the circuit still offers the following advantage features: very low active and passive sensitivities, using of grounded capacitors and resistors which is ideal for integrated circuit implementation, without requirements for critical component matching conditions and very high output impedance. The workability of the proposed circuit has been verified via HSPICE simulations using TSMC 0.18 μm, level 49 MOSFET technology.

scholarly journals On The Realization of Low/High Frequency CCII+ Based Oscillators Employing Grounded Resistors and Lossy Capacitors

1995 ◽  
Vol 17 (4) ◽  
pp. 269-274 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Muhammad Haroon Khan
Keyword(s):  
High Frequency ◽  
Second Generation ◽  
Current Conveyors ◽  
Independent Control ◽  
Low Frequencies ◽  
Positive Current ◽  
Condition Of Oscillation ◽  
Simulation Results ◽  
Oscillator Circuits

New RC oscillator circuits are presented. Each circuit uses two second-generation positive current-conveyors, three grounded capacitors and four grounded resistors. The circuits enjoy independent control of the frequency and the condition of oscillation and are very attractive for integration. The circuits can realize high and low frequencies of oscillation. Simulation results are included.

CCCIIs-Based First-Order All-Pass Filter and Quadrature Oscillators

2017 ◽  
Vol 26 (06) ◽  
pp. 1750094 ◽  
Author(s):  
Phatsagul Thitimahatthanagusol ◽  
Charinsak Saetiaw ◽  
Thanaset Thosdeekoraphat ◽  
Chanchai Thongsopa ◽  
Saksit Summart
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Pass Filter ◽  
First Order ◽  
Condition Of Oscillation ◽  
High Output Impedance ◽  
Quadrature Signals ◽  
Quadrature Oscillators ◽  
A Current ◽  
High Output

This paper introduces a current-mode first-order all-pass filter (APF) and its application in quadrature oscillator (QO) based on CCCII. The proposed filter can provide inverting and noninverting all-pass functions with a same circuit topology, it uses two CCCIIs and one grounded capacitor. Moreover, the first-order all-pass filter was applied in current-mode sinusoidal quadrature oscillators with the design based on block diagrams. The introduced oscillators can provide four phase-quadrature signals which independently control the condition of oscillation (CO) and frequency of oscillation (FO). The proposed oscillators consist of three CCCIIs and two grounded capacitors. The proposed APF and QOs have high output impedance which can directly drive load without additional current buffer. In addition, they use only grounded capacitors which are very appropriate to future development into an integrated circuit. The results of PSPICE simulation program correspond to the theoretical analysis.

scholarly journals Single DD-DXCCII based quadrature oscillator with simultaneous current and voltage outputs

2016 ◽  
Vol 19 (2) ◽  
pp. 94 ◽  
Author(s):  
B. Chaturvedi ◽  
J. Mohan
Keyword(s):  
Sensitivity Analysis ◽  
Process Parameters ◽  
Second Generation ◽  
Active Element ◽  
Current Conveyor ◽  
Cmos Process ◽  
Quadrature Oscillator ◽  
Condition Of Oscillation ◽  
Simulation Results

In this paper, a versatile quadrature oscillator using single Differential Difference Second Generation Dual-X Current Conveyor (DD-DXCCII) as an active element, two grounded capacitors and three grounded resistors is presented. The proposed oscillator provides two current outputs and three voltage outputs in quadrature relationship simultaneously so named as versatile quadrature oscillator. The proposed versatile quadrature oscillator exhibits the feature of orthogonal control over the frequency of oscillation and condition of oscillation. Effects of non-idealities along with sensitivity analysis are also analyzed. The proposed circuit has low active and passive sensitivities. Parasitic study is further explored. The simulation results with 0.18μm CMOS process parameters using PSPICE are also given. Possible realization of proposed oscillator using AD-844 and LM13600 along with some simulation results are also given for completeness sake.

scholarly journals Cascadable Current-Mode First-Order and Second-Order Multifunction Filters Employing Grounded Capacitors

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Jiun-Wei Horng ◽  
Chun-Li Hou ◽  
Ching-Yao Tseng ◽  
Ryan Chang ◽  
Dun-Yih Yang
Keyword(s):  
Theoretical Analysis ◽  
Second Generation ◽  
Current Mode ◽  
Bandpass Filters ◽  
Second Order ◽  
Current Conveyors ◽  
First Order ◽  
Simulation Results ◽  
Circuit Configuration ◽  
High Output

A configuration for realizing low input and high output impedances current-mode multifunction filters using multiple output second-generation current conveyors (MOCCIIs) is presented. From the proposed circuit configuration, first-order allpass, highpass, lowpass and second-order allpass, notch, bandpass filters can be obtained. The simulation results confirm the theoretical analysis.

scholarly journals New Current-Mode Oscillators Using a Single Unity-Gain Current-Follower

1995 ◽  
Vol 18 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Muhammad Taher Abuelma'atti
Keyword(s):  
Current Mode ◽  
Quadrature Oscillator ◽  
Current Follower ◽  
Unity Gain ◽  
Simulation Results

A general circuit for realizing current-mode oscillators using a single negative unity-gain current-follower is presented. Using this circuit new oscillators of this class can be discovered systematically. Simulation results obtained from three new circuits are presented. The feasibility of obtaining a quadrature oscillator is investigated.

scholarly journals A Current-Mode TransImpedance Amplifier for Capacitive Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1033
Author(s):  
Alessandro Nastro ◽  
Andrea De Marcellis ◽  
Marco Ferrari ◽  
Vittorio Ferrari
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
Detection Sensitivity ◽  
Transimpedance Amplifier ◽  
Current Conveyors ◽  
Interface Circuit ◽  
Linear Behavior ◽  
Board Level ◽  
Voltage Conversion ◽  
A Current

A Current-Mode (CM) TransImpedance Amplifier (TIA) based on Second Generation Current Conveyors (CCIIs) for capacitive microsensor measurements is presented. The designed electronic interface performs a capacitance-to-voltage conversion using 3 CCIIs and 3 resistors exploiting a synchronous-demodulation technique to improve the overall detection sensitivity and resolution of the system. A CM-TIA solution designed at transistor level in AMS0.35 µm integrated CMOS technology with a power consumption lower than 900 µW is proposed. Experimental results obtained with a board-level prototype show linear behavior of the proposed interface circuit with a resolution up to 34.5 fF and a sensitivity up to 223 mV/nF, confirming the theoretical expectations.

scholarly journals A Current Mode Universal Filter and a Single Resistance Controlled Oscillator Employing only Grounded Passive Elements: Applications of VDCC

2021 ◽  
Vol 25 (2) ◽  
pp. 65-76
Author(s):  
Tajinder Singh Arora ◽  
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Paper Analysis ◽  
Current Conveyor ◽  
Universal Filter ◽  
Dual Mode ◽  
Passive Element ◽  
Research Article ◽  
Sinusoidal Oscillator ◽  
A Current

This research article explores the possible applications of voltage differencing current conveyor (VDCC), as a current mode universal filter and a sinusoidal oscillator. Without the need for an additional active/passive element, a very simple hardware modification makes it a dual-mode quadrature oscillator from the filter configuration. Both the proposed circuit requires only two VDCC and all grounded passive elements, hence a preferable choice for integration. The filter has some desirable features such as availability of all five explicit outputs, independent tunability of filter parameters. Availability of explicit quadrature current outputs, independence in start and frequency of oscillations, makes it a better oscillator design. Apart from prevalent CMOS simulation results, VDCC is also realized and experimentally tested using the off-the-shelf integrated circuit. All the pen and paper analysis such as non-ideal, sensitivity and parasitic analysis supports the design.

scholarly journals Gm-Realization of Controlled-Gain Current Follower Transconductance Amplifier

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Worapong Tangsrirat
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
Current Transfer ◽  
Biquad Filter ◽  
Transconductance Amplifier ◽  
Current Follower ◽  
Dc Bias ◽  
Simulation Results ◽  
Supply Voltages ◽  
A Current

This paper describes the conception of the current follower transconductance amplifier (CFTA) with electronically and linearly current tunable. The newly modified element is realized based on the use of transconductance cells (Gms) as core circuits. The advantage of this element is that the current transfer ratios (iz/ipandix/iz) can be tuned electronically and linearly by adjusting external DC bias currents. The circuit is designed and analyzed in 0.35 μm TSMC CMOS technology. Simulation results for the circuit with ±1.25 V supply voltages show that it consumes only 0.43 mw quiescent power with 70 MHz bandwidth. As an application example, a current-mode KHN biquad filter is designed and simulated.

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