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 CS  Vol.5 No.8 , August 2014
CMOS Phase and Quadrature Pulsed Differential Oscillators Coupled through Microstrip Delay-Lines
Abstract: An innovative solution to design phase and quadrature pulsed coupled oscillators systems through electromagnetic waveguides is described in this paper. Each oscillator is constituted by an LC differential resonator refilled through a couple of current pulse generator circuits. The phase and quadrature coupling between the two differential oscillators is achieved using delayed replicas of generated fundamentals from a resonator as driving signal of pulse generator injecting in the other resonator. The delayed replicas are obtained by microstrip-based delay-lines. A 2.4 - 2.5 GHz VCO has been implemented in a 150 nm RF CMOS process. Simulations showed at 1 MHz offset a phase noise of -139.9 dBc/Hz and a FOM of -189.1 dB.
Cite this paper: Stilgenbauer, F. , Perticaroli, S. and Palma, F. (2014) CMOS Phase and Quadrature Pulsed Differential Oscillators Coupled through Microstrip Delay-Lines. Circuits and Systems, 5, 181-190. doi: 10.4236/cs.2014.58020.
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