Download Analysis And Design Of Quadrature Oscillators by Luis B. Oliveira, Jorge R. Fernandes, Igor M. Filanovsky, PDF

By Luis B. Oliveira, Jorge R. Fernandes, Igor M. Filanovsky, Chris J. M. Verhoeven, Manuel M. Silva

The next gains of research and layout of Quadrature Oscillators make it diverse from the prevailing literature on digital oscillators: specialize in quadrature oscillators with actual quadrature and coffee phase-noise, required through smooth communique platforms; a close comparative research of quadrature LC and RC oscillators, together with cross-coupled LC quasi-sinusoidal oscillators, cross-coupled RC rest oscillators, a quadrature RC oscillator-mixer, and two-integrator oscillators; an intensive research of the impact of mismatches at the phase-error and the phase-noise; the belief that quadrature RC oscillators could be a useful substitute to LC oscillators whilst region and price will be minimized (in cross-coupled RC oscillators either the quadrature-error and phase-noise are lowered, while in LC oscillators the coupling raises the phase-noise); use of a established layout technique, during which a know-how self sufficient examine, with perfect blocks, is played before everything, after which the circuit point layout is addressed; and inclusion of many experimental effects, bought from diversified built-in circuit prototypes, within the GHz variety.

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1 Phase-noise in a Single Relaxation Oscillator . . . . . . . . . . . . . . 2 Phase-noise in Quadrature Relaxation Oscillators . . . . . . . . . . . . . Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction This chapter is dedicated to the study of quadrature relaxation oscillators, which consist of two cross-coupled RC relaxation oscillators [9].

13. In practice this approximation is valid for Q ≥ 5. This definition of Q is suitable for filters, and can be used in oscillators if we consider the resonator circuit as a second order filter. 17) This definition is usually applied to a general RLC circuit and relates the maximum energy stored (in C or L) and the energy dissipated (by R) in a period. As an example, we apply the definition to an RLC series circuit. The energy is stored in the inductor and the capacitor, and the maximum energy stored in the inductor and the capacitor is the same.

Relaxation Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 High Level Model . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Circuit Implementation . . . . . . . . . . . . . . . . . . . . . . . Quadrature Relaxation Oscillator . . . . . . . . . . . . . . . . . . . . . . . 1 High Level Model . . . . . . . . . . . . . . .

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