Full-wave rectifiers based on operational transconductance amplifiers

Analog Integr Circ Sig Process

2014

The paper deals with the design and performance analyses of a current conveyor based voltage-mode full-wave rectifier. In the structure of the proposed nonlinear circuit the second-generation current conveyor and dual-X current conveyor have been used as active elements. In the circuit the current sourcing scheme of the diodes is used to enable high-frequency signal processing. Except the active elements and only two rectifying diodes, other two resistors are required, generally operating as simple voltage-to-current and current-to-voltage converters. Using the CMOS implementation of the active elements, the performance of the rectifier was analyzed by evaluating the frequency dependent RMS error and DC transient value for different values of input voltage magnitudes. Furthermore, using readily available integrated circuits, the performance of the proposed structure has also been verified by experimental measurements that show the feasibility of the voltage-mode full-wave rectifier.

Section: Introductionmentioning

confidence: 99%

Voltage-mode full-wave rectifier based on DXCCII

Analog Integr Circ Sig Process

2014

“…The use of fully differential operational transconductance amplifiers (BOTA) operating in weak inversion region for the design of precision full-wave rectifiers is presented in [12]. The solution in [12] is based on the idea discussed in [13], where simple transconductance amplifiers (OTA) are controlled by the current derived from the input signal to be rectified. In another group of precision rectifiers, a transistor connected to the current output of an active element operates as a switch.…”

Section: Introductionmentioning

confidence: 99%

Fast voltage-mode full-wave rectifier using CCII and DXCCII

2013 8th International Conference on Electrical and Electronics Engineering (ELECO)

2013

The paper deals with the design and performance analyses of a fast voltage-mode full-wave rectifier. In the structure the second-generation current conveyor and dual-X current conveyor have been used as active elements. The circuit features with maximal simplicity as only two diodes and two resistors are necessary. To enable high-frequency signal processing, current sourcing of the diodes is used with advantage. Using the CMOS implementation of the active elements, the performance of the rectifier was analyzed by evaluating the frequency dependent RMS error and DC transient value for different values of input voltage amplitudes.

“…The use of fully differential operational transconductance amplifiers (BOTA) operating in weak inversion region for the design of precision full-wave rectifiers is presented in [14]. The solution in [14] is based on the idea discussed in [15], where simple transconductance amplifiers (OTA) are controlled by the current derived from the input signal to be rectified. In another group of precision rectifiers, a transistor connected to the current output of an active element operates as a switch.…”

Section: Introductionmentioning

confidence: 99%

Current-mode precision full-wave rectifier using single DXCCII and two diodes

2011 20th European Conference on Circuit Theory and Design (ECCTD)

2011

In this paper a new current-mode precision fullwave rectifier using is presented. It uses only single dual-X second generation current conveyor and two diodes. The main advantage of the proposed circuit is the high-impedance output, hence, by appropriate loading, voltage response can also be obtained. Using the CMOS implementation of the active element, the performance of the rectifier is analyzed by evaluating the frequency dependent RMS error and DC transient value for different values of input current amplitudes and comparison to other current-mode rectifiers is given. Furthermore, SPICE simulations are included that show the feasibility to rectify signals of frequency 120 MHz.