%0 Electronic Article %A Raj Senani %A Manish Gupta %A Data Ram Bhaskar %A Abdhesh Kumar Singh %K CMOS OTAs %K explicit-current-output quadrature oscillators %K size 0.18 mum %K single operational transconductance amplifier-RC sinusoidal oscillators %K equivalent form generation %K single-OTA-RC sinusoidal oscillators %K equivalent op-amp oscillator circuits %K dual-OTA-RC sinusoidal oscillators %K GC %K SPICE simulations %K grounded capacitors %K CMOS technology process %K characteristic equation %K nullor-based theory %X It has been shown in two earlier papers published from this study that corresponding to a given single-operational trans-conductance amplifier (single-OTA)-RC and dual-OTA-RC sinusoidal oscillators, there are three other structurally distinct equivalent forms having the same characteristic equation, one of which employs both grounded capacitors (GC). In this study, an earlier nullor-based theory of generating equivalent op-amp oscillator circuits, proposed by the first author, is extended to derive equivalent OTA-RC circuits which discloses the existence of an additional number of equivalent forms for the same given OTA-RC oscillators than those predicted by the quoted earlier works, and thereby considerably enlarging the set of equivalents of a given OTA-RC oscillator. Furthermore, the presented nullor-based theory of generating equivalent OTA-RC oscillators results in three additional interesting outcomes: (i) the revelation that corresponding to any given OTA-RC oscillator there are two ‘both-GC’ oscillators (and not merely one, as derived in the quoted earlier works); (ii) the availability of explicit current outputs in several of the derived equivalents and (iii) the realisability explicit-current-output ‘quadrature oscillators’ in some of the generated equivalent oscillators. The workability of the generated equivalent OTA-RC oscillators has been verified by SPICE simulations, based on CMOS OTAs using 0.18 µm CMOS technology process parameters, and some sample results are given. %T Generation of equivalent forms of operational trans-conductance amplifier-RC sinusoidal oscillators: the nullor approach %B The Journal of Engineering %D June 2014 %V 2014 %N 6 %P 324-331 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=6jqnggtv1sjme.x-iet-live-01content/journals/10.1049/joe.2013.0200 %G EN