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

Abstract

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.

A High Performance Full-Wave Rectifier Using a Single CCII-, Two Diodes and Two Resistor

“…VM full-wave recti er topologies of [16] employ one CCII and one DXCCII. Also, a VM fullwave recti er circuit, consisting of two dual output CCIIs, have been proposed in [17]. Op-Amp based full-wave recti ers use at least two active components, at least three resistors requiring at least one matching condition and two P-N junction diodes [3][4][5]18,19].…”

“…However, most of these circuits operating in VM su er from using at least four diodes and/or two active elements [2][3][4][5][7][8][9]11,12,14,16,17].…”

High Performance Temperature Insensitive Current Mode Rectifier without Diode

“…Many current mode rectifiers have been reported in the papers [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Reported rectifiers usually employ two current-mode active elements, two or four diodes, and additional sub circuits.…”

Voltage mode electronically tunable full-wave rectifier

“…However, the circuit in [18] requires four diodes and one re- sistor. Other rectifier examples can be found in [19][20][21][22][23].…”

“…Although these circuits have fairly simple structures, the circuit in [19] requires a floating input voltage source and the circuit in [21] needs three external bias current sources which should be realised separately. The circuit in [20] employs an excessive number of OTAs as active elements and the circuits of [22,23] use CDTA or DXCCII which have more complex internal structures with respect to CCII, OTA and DVCC. The circuit in [24] employs a current mode full-wave rectifier based on single modified Z-copy current difference transconductance amplifier (MZC-CDTA) and two switches.…”