Precision full-wave current-mode rectifier using current differencing transconductance amplifier

2011 ◽  
Author(s):  
Jaroslav Koton ◽  
Norbert Herencsar ◽  
Kamil Vrba ◽  
Shahram Minaei
Keyword(s):  
Current Mode ◽  
Full Wave ◽  
Transconductance Amplifier ◽  
Current Differencing Transconductance Amplifier

SYNTHESIS OF CURRENT DIFFERENCING TRANSCONDUCTANCE AMPLIFIER-BASED CURRENT LIMITERS AND ITS APPLICATIONS

2011 ◽  
Vol 20 (02) ◽  
pp. 185-206 ◽  
Author(s):  
WORAPONG TANGSRIRAT ◽  
TATTAYA PUKKALANUN ◽  
WANLOP SURAKAMPONTORN
Keyword(s):  
Piecewise Linear ◽  
Current Mode ◽  
Building Blocks ◽  
Transfer Characteristic ◽  
Piecewise Linear Function ◽  
External Bias ◽  
Full Wave ◽  
Transconductance Amplifier ◽  
Electronically Tunable ◽  
Current Differencing Transconductance Amplifier

A synthesis of analog current limiter (CL) building blocks based on a current differencing transconductance amplifier (CDTA) is proposed. The breakpoint and the slope of the resulting transfer characteristic obtained from the proposed CDTA-based CL are electronically programmable through the external bias currents. To demonstrate versatility of the proposed electronically tunable CLs, some nonlinear applications to programmable current-mode precision full-wave rectifiers and piecewise-linear function approximation generators are also presented. PSPICE simulation and experimental results confirm the effectiveness of the proposed circuits.

Modified current differencing transconductance amplifier – new versatile active element

2012 ◽  
Vol 60 (4) ◽  
pp. 739-750 ◽  
Author(s):  
A. Malcher
Keyword(s):  
Signal Processing ◽  
Active Element ◽  
Current Mode ◽  
Input Resistance ◽  
Analog Signal ◽  
Output Stage ◽  
Spice Simulation ◽  
Transconductance Amplifier ◽  
Simulation Results ◽  
Current Differencing Transconductance Amplifier

Abstract This paper introduces a new current mode component called Modified Current Differencing Transconductance Amplifier (MCDTA). Important parameters of the circuit i.e. input resistance, z terminal resistance and transconductance of the output stage can be tuned electrically. The circuit can be implemented in linear and non-linear analog signal processing. The paper presents an example of the MCDTA application - a complete quadrature oscillator with the amplitude regulation. The functionality of the example circuit and its tuning capability were proved by the SPICE simulation results.

A NEW MIXED MODE FULL-WAVE RECTIFIER REALIZATION WITH CURRENT DIFFERENCING TRANSCONDUCTANCE AMPLIFIER

2014 ◽  
Vol 23 (07) ◽  
pp. 1450101 ◽  
Author(s):  
FIRAT KAÇAR ◽  
MUHAMMED EMIN BAŞAK
Keyword(s):  
Monte Carlo ◽  
Mixed Mode ◽  
Zero Crossing ◽  
Mos Transistor ◽  
Full Wave ◽  
Transconductance Amplifier ◽  
Current Voltage ◽  
Simulation Results ◽  
Current Differencing Transconductance Amplifier ◽  
A Current

In this paper, a new mixed mode full-wave rectifier which consists of a current differencing transconductance amplifier (CDTA), resistor and two complementary MOS transistor is presented. The proposed circuit is called as mixed mode because it can be used as current-, voltage-, transimpedance- and transconductance-mode rectifier depending on how the resistor is connected to the input or output of the circuit. The presented circuit has an appropriate zero crossing performance, linearity, low component count, and can be adapted to modern IC technologies. It is also suitable for monolithic integrated implementation. LTSPICE simulations with 0.18 μm CMOS model obtained through TMSC are included to verify the workability of the proposed circuit. We also performed noise and Monte Carlo analyses. Various simulation results are presented to show the effectiveness of the proposed circuit.

scholarly journals A New High Precision Power Detector of Complex Voltage Signals

2015 ◽  
Vol 15 (4) ◽  
pp. 184-195 ◽  
Author(s):  
Predrag B. Petrović
Keyword(s):  
Current Mode ◽  
Frequency Range ◽  
Transconductance Amplifier ◽  
Operating Frequency Range ◽  
Measurement Results ◽  
Power Detector ◽  
Current Differencing Transconductance Amplifier ◽  
A Current ◽  
Wide Operating ◽  
Better Than

Abstract A current-mode bipolar power detector based on a novel synthesis of translinear loop squarer/divider is presented. The circuits consist of a single multiple-output current controlled current differencing transconductance amplifier (MO-CCCDTA), two current controlled conveyors (CCCII), and one resistor and one capacitor that are both grounded. The errors related to the signal processing and errors bound were investigated and presented in the paper. The PSpice simulation and experimental results are depicted, and agree well with the theoretical anticipation. The measurement results show that the scheme improves the accuracy of the detector to better than 0.04 % and wide operating frequency range from 50 Hz to 10 MHz. The maximum power consumption of the detector is approximately 5.80 mW, at ±1.2 V supply voltages.

scholarly journals Current Mode Full-Wave Rectifier Based on a Single MZC-CDTA

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Neeta Pandey ◽  
Rajeshwari Pandey
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
Spice Simulation ◽  
Full Wave ◽  
Transconductance Amplifier ◽  
Current Difference ◽  
A Current

This paper presents a current mode full-wave rectifier based on single modified Z copy current difference transconductance amplifier (MZC-CDTA) and two switches. The circuit is simple and is suitable for IC implementation. The functionality of the circuit is verified with SPICE simulation using 0.35 μm TSMC CMOS technology parameters.

Voltage tunable current MODE KHN filter based on current differencing transconductance amplifier (CDTA)

2021 ◽  
pp. 2150181
Author(s):  
Rohit Thakur ◽  
Sangeeta Singh
Keyword(s):  
High Reliability ◽  
Cutoff Frequency ◽  
Current Mode ◽  
Input Voltage ◽  
Design Flexibility ◽  
Current State ◽  
Transconductance Amplifier ◽  
Unique Approach ◽  
Current Differencing Transconductance Amplifier ◽  
Great Dependency

The era of SoC design has great dependency on CMOS circuits owing to its low power and high reliability which could contribute in the effective circuit designing. Here, a unique approach for the designing of voltage tunable current differencing transconductance amplifier (CDTA) is reported for the realization of Kerwin–Huelsman–Newcomb (KHN) filter. The proposed design has been simulated by using Cadence Virtuoso simulation tool with 0.18 [Formula: see text]m technology parameters. This design is based on input voltage-based gain and frequency of operation tuning approach. In this reported design of filter, cutoff frequency can be tailored by input voltage instead of input current. This relaxes the need for the iterative circuit modifications to work in a particular frequency range. Thus, the reported CDTA design is expected to be robust and offers higher design flexibility as there is now no need of iterative designing and calibration in this approach. This also exhibits retained area requirement as per the current state of the art for the KHN filters. Further, the performance of designed CDTA-based KHN filter has also been verified with the existing KHN filters.

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