An ingenious methodology of deriving single‐FTFN‐based canonic grounded‐capacitor SRCOs

• Published in: International journal of circuit theory and applications 2023-04, Vol.51 (4), p.1918-1934
• Main Authors: Senani, Raj, Bhaskar, Data Ram, Gupta, Shanti Swaroop, Kumar, Pragati, Sharma, Ravindra Kumar
• Format: Article
• Language: English
• Subjects: analog integrated circuits; Capacitors; circuit synthesis; Circuits; four terminal floating nullors; Methodology; nullors; Oscillators; sinusoidal oscillators
• ISSN: 0098-9886; 1097-007X
• DOI: 10.1002/cta.3501

Summary In the past, several new active elements have been employed to realize single‐resistance‐controlled oscillators (SRCO) of which the four‐terminal‐floating‐nullors (FTFN) have attracted considerable attention in the literature. In this paper, an ingenious methodology of deriving single‐FTFN‐based canonic grounded‐capacitor (GC) SRCOs has been presented. It is shown that such oscillators can be systematically evolved from a class of earlier known op‐amp‐based SRCOs through the application of two theorems pertaining to RC‐nullor oscillators published earlier. The presented methodology not only yields all the previously known (four) single‐FTFN‐based canonic GC SRCOs but also reveals a number of (12) new circuits, which have not been known in the open literature earlier. The viability of the evolved oscillator circuits has been confirmed through SPICE simulations, and some simulation results have been given. As an alternate to the previously known approaches, we present an ingenious methodology of deriving single‐four‐terminal‐floating‐nullor (FTFN)‐based canonic grounded‐capacitor single‐resistance‐controlled oscillators (SRCO). The presented methodology not only yields all the previously known (four) single‐FTFN‐based canonic GC‐SRCOs but also reveals (twelve) new circuits which have not been known in the open literature earlier. The viability of the evolved oscillator circuits has been confirmed through SPICE simulations and some simulation results have been given.