Abstract
The generation of sine wave at low frequency is very tedious because the size of the inductors used in the circuit is very large and bulky. Hence the inductor is replaced with the simulated inductor. This study deals with the generation of sine wave from an active tuned oscillator which consists of the simulated inductor and capacitor. The oscillator makes use of the basic blocks of a band pass filter using the simulated inductor and a diode limiter. This circuit has the advantage of improving the quality of the wave by increasing the Q-factor of the band pass filter. It also decreases the Total Harmonic Distortion (THD) in the sine wave. The simulation is done using the analog simulator software PSPICE and the total harmonic distortion is calculated using MATLAB.
Highlights
The inductors cannot be used at low frequencies because of many disadvantages (Umesh and Sushil, 1989; George, 1970; Ford and Girling, 1966; Suhash, 1974)
Since the values of inductors are in the order of Henry at low frequencies for any applications in analog circuits, there is a necessity for the replacement of the inductor by some inductor simulator circuit
One such circuit is Antoniou inductor simulator circuit (Sedra and Smith, 2002) which is obtained from the Generalized Impedance Converter to replace such a large inductor
Summary
The inductors cannot be used at low frequencies because of many disadvantages (Umesh and Sushil, 1989; George, 1970; Ford and Girling, 1966; Suhash, 1974). This simulated inductor circuit consists of op-amps, resistors and capacitors. Such circuit find application in the design of analog filters namely low pass filter, high pass filter, band pass filter etc., which gives the exact frequency response of ideal filters (Susan and Jayalalitha, 2010a).
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