Non-linear oscillator

A non-linear oscillator for generating a first sinusoidal signal and a second sinusoidal signal, said non-linear oscillator being adapted to receive a reference signal and comprising:

• a comparing device for receiving the reference signal and operable to compare the reference signal with a feedback signal and output a comparison signal based on result of comparison made thereby;
• a computing device coupled to said comparing device and operable to output first and second combined signals according to a predetermined frequency value, the comparison signal, the feedback signal and the first and second sinusoidal signals;
• an integrator device coupled to said computing device and operable to perform integration upon the first and second combined signals to output the first and second sinusoidal signals;
• and
• a feedback device coupled to said comparing device, said computing device and said integrator device, and operable to output the feedback signal to said comparing device and said computing device according to a first predetermined amplitude value and the first and second sinusoidal signals from said integrator device.