A New Mixed Mode Full-Wave Rectifier Realization With Current Differencing Transconductance Amplifier

Abstract

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.

Minimum component high frequency current mode rectifier

“…The parasitic capacitance limits the frequency performance of the rectifier. The effect of transconductance mismatch is modelled by Equation (14). While, the combined effect of all the non-idealities are modelled by Equations (15)- (19).…”

“…Many implementations of current and voltage mode rectifiers based on current mode active elements can be found in the literature [1][2][3][4]. The rectifiers based on operational transconductance amplifiers (OTA) and current conveyors (CC) have been proposed recently by many researchers [1][2][3][4][8][9][10][11][12][13][14][15][16][17][18][19][20]. These current and voltage mode precision rectifiers are reported to work well but most of them have large component count which increases the area and limits the operating frequency.…”

“…The circuit's performance degrades at high frequencies. In [14] proposed a mixed mode full wave rectifier employing current differencingtransconductance amplifier (CDTA) and two MOS transistors the circuit performs well above 100MHz. Another CDTA based implementationis presented by [15], employing one CDTA and four diodes and works well up to 5 MHz frequency.…”

Performance enhancement of current differencing transconductance amplifier (CDTA) by using a new approach of gm boosting and its application

“…There are few papers published on different structures of CDTA [2][3][4][5][6][7][8][9][10] in which its advantages and disadvantages have been shown and compared with other state of the art solutions. Apart from work on the structures of CDTA, there are numerous papers published on the applications such as current limiter [11], filters [12][13][14][15][16][17][18][19], modulators [20], multiplier [21], oscillators [22][23][24][25][26][27][28][29][30][31][32][33][34][35], rectifiers [36][37][38], Schmitt trigger [39], and squarer and square rooter circuit [40]. Tranconductance of CDTA plays a vital role in all the applications cited above.…”

Current differencing transconductance amplifier (CDTA) with high transconductance and its application in filter and oscillator

“…Recently, a voltage tunable CDTA with high performance and enhanced bandwidth has been proposed in [13]. Apart from the advancement in the structure of CDTA, there are a lot of papers published in the applications such as current limiter [14], filters [15][16][17][18][19], inductance simulation circuits [20], multipliers [21,22], modulators [23], oscillators [24][25][26][27][28][29][30][31], rectifier [32,33] etc. Among the applications cited above, the center frequency (f 0 ) of filters and frequency of oscillation (f 0 ) of oscillators are controlled by the ratio of transconductance (g m ) to capacitor (C) i.e.…”