Multi-phase oscillator is an essential block in digital communication systems especially phase shift keying PSK based systems. In this paper, a procedure for designing a multi-phase oscillator with any required phase shift is proposed, unlike the previous oscillator which generates equal phase shifts. This oscillator circuit is built using fractional-order elements to generate any distribution of phase shift. The general characteristics equation is studied where the condition for oscillation and oscillation frequency are derived. Finally, different examples are introduced with their simulations. © 2014 IEEE.
Fouda M.E., Soltan A., Radwan A.G., Soliman A.M.
Digital communication systems; Oscillators (electronic); Phase modulation; Phase shift; Phase shifters; Fractional order; Higher-order; Oscillation frequency; Oscillator circuits; Phase oscillators; Phase shift keying
2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014, Art. No. 7050030, PP. 494 to 497, Doi: 10.1109/ICECS.2014.7050030