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

ISBN-10: 9048178975

ISBN-13: 9789048178971

The subsequent beneficial properties of study and layout of Quadrature Oscillators make it diverse from the prevailing literature on digital oscillators: concentrate on quadrature oscillators with exact quadrature and coffee phase-noise, required by means of smooth communique structures; an in depth comparative examine 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 sensible replacement to LC oscillators whilst zone and value could 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 dependent layout method, within which a expertise self sufficient learn, with excellent blocks, is played firstly, after which the circuit point layout is addressed; and inclusion of many experimental effects, got from diversified built-in circuit prototypes, within the GHz diversity.

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Extra info for Analysis And Design Of Quadrature Oscillators

Example text

The double balanced mixer is a more complex circuit, which has LO and RF differential inputs: it is the Gilbert cell [1, 2], represented in Fig. 27. This mixer has higher gain, lower noise figure, good linearity, high port-to-port isolation, high spurious rejection, and less even order distortion, with respect to the single balanced mixer. The main disadvantage is the increased area (due to complexity) and power consumption [1,46]; additionally, it may require a balun transformer [46] to provide the RF differential input (the image reject filter output is typically single-ended).

1 High Level Model . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Circuit Implementation . . . . . . . . . . . . . . . . . . . . . . . Quadrature Relaxation Oscillator . . . . . . . . . . . . . . . . . . . . . . . 1 High Level Model . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Quadrature Relaxation Oscillator without Mismatches . . . . . . . . . . 3 Quadrature Relaxation Oscillator with Mismatches .

9 produces quadrature oscillations with νC2 in advance. We will start the analysis by considering that Q 2 is on and Q 1 is off. When νC2 (t) goes through zero (instant t1 in Fig. 10) i SL1 decreases and i SL2 increases. 3 Quadrature Relaxation Oscillator Fig. 3) Since it is assumed that the switching is provided by a vanishingly small value of i SL2 − i SL1 the minimum value of νC1 is −2I R. Considering now the second transition of νC2 by zero (instant t3 in Fig. 10) i SL1 increases and i SL2 decreases.

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Analysis And Design Of Quadrature Oscillators by Luis B. Oliveira, Jorge R. Fernandes, Igor M. Filanovsky, Chris J. M. Verhoeven, Manuel M. Silva


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