Load Insensitive, Low Voltage Quadrature Oscillator Using Single Active Element

Jitendra Mohan,Bhartendu Chaturvedi

doi:10.15598/aeee.v15i3.2109

Abstract

In this paper, a load insensitive quadrature oscillator using single differential voltage dual-X second generation current conveyor operated at low voltage is proposed. The proposed circuit employs single active element, three grounded resistors and two grounded capacitors. The proposed oscillator offers two load insensitive quadrature current outputs and three quadrature voltage outputs simultaneously. Effects of non-idealities along with the effects of parasitic are further studied. The proposed circuit enjoys the feature of low active and passive sensitivities. Additionally, a resistorless realization of the proposed quadrature oscillator is also explored. Simulation results using PSPICE program on cadence tool using 90 nm Complementary Metal Oxide Semiconductor (CMOS) process parameters confirm the validity and practical utility of the proposed circuit.

Highlights

Nowadays, research in analog signal processing has gone in the direction of low-voltage and low-power design
The idea behind this paper is to propose a new load insensitive, low voltage quadrature oscillator using a single Differential Voltage Dual-X Second generation Current Conveyor (DV-DXCCII) along with five grounded passive components
DXCCII are shown in Fig. 1, where the Complementary Metal Oxide Semiconductor (CMOS) realization comprises of Differential Voltage Current CononuVeo0t1puusltys.VaSXn+iCdn2 ctehrbVeoXet- hqRu3tahdeVrca02uturrreenvtooltuatgpeuotsut(pIOut1sasnimd uIlOt2a)

Summary

Introduction

Research in analog signal processing has gone in the direction of low-voltage and low-power design. The modern development towards miniaturized circuits has given a strong and significant enhancement towards the implementation of low-voltage and low-power analog circuits. Ever since the introduction of analog signal processing, the need of new active devices has always been very signifi-. The idea behind this paper is to propose a new load insensitive, low voltage quadrature oscillator using a single Differential Voltage Dual-X Second generation Current Conveyor (DV-DXCCII) along with five grounded passive components (three grounded resistors and two grounded capacitors). The proposed circuit design offers many advantages such as the use of single active element, the use of all grounded passive components, operated at low voltage, simultaneous availability of quadrature voltage and load insensitive quadrature current outputs, low active and passive sensitivities and resistorless realization

1: Schematic

3: Phasor

Parasitic Study

Simulation Results

C2 RM OS 1 RM OS 2

Conclusion