Download Analysis and Design of Autonomous Microwave Circuits (Wiley by Almudena Suarez PDF

By Almudena Suarez

Provides simulation suggestions that considerably raise designers' keep an eye on over the oscillationin self reliant circuits
This e-book allows a valid realizing of the free-running oscillation mechanism, the start-up from the noise point, and the institution of the steady-state oscillation. It bargains with the operation ideas and major features of free-running and injection-locked oscillators, coupled oscillators, and parametric frequency dividers.
Analysis and layout of independent Microwave Circuits provides:
An exploration of the most nonlinear-analysis equipment, with emphasis on harmonic stability and envelope temporary methods
Techniques for the effective simulation of the most typical self reliant regime
A presentation and comparability of the most stability-analysis tools within the frequency domain
A distinct exam of the instabilization mechanisms that delimit the operation bands of self reliant circuits
Coverage of options used to put off universal different types of undesired habit, resembling spurious oscillations, hysteresis, and chaos
A thorough presentation of the oscillator part noise
A comparability of the most methodologies of phase-noise analysis
Techniques for independent circuit optimization, in line with harmonic balance
A attention of alternative layout targets: presetting the oscillation frequency and output energy, expanding potency, editing the brief length, and enforcing operation bands
Analysis and layout of independent Microwave Circuits is a beneficial source for microwave designers, oscillator designers, and graduate scholars in RF microwave layout.

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Additional resources for Analysis and Design of Autonomous Microwave Circuits (Wiley Series in Microwave and Optical Engineering)

Example text

21) are constant and constitute the derivatives of the nonlinear function YT (V , ω), calculated at the free-running oscillation point, given by Vo and ωo . 22) where the constant coefficient has been called σo . The amplitude increment V (t) evolves according to V (t) = Vo eσo t , where Vo depends on the value of the initial instantaneous perturbation. 2 in the case of perturbed dc solutions. For the oscillation to be stable, the perturbation must vanish exponentially in time. 22) must fulfill σo < 0.

Note that the integration from a different initial condition provides a time-shifted steady-state solution with an identical waveform. 12) it was shown that for a one-harmonic analysis of the oscillator, in terms of the node voltage v(t) = Re[V ej ωo t ], any phase shift v(t) = Re[V ej (ωo t+φ) ] provides an equally valid solution. When considering several harmonic components, the solution will be invariant with respect to the phase of only one of these harmonic components. Otherwise, aside from the time shift, there would be a change in the waveform itself, which is not the case in periodic oscillation.

VN ) = 0 .. HN = VN + ZL (N ωo )IN (V−N , . . , Vo , . . 4 FREQUENCY-DOMAIN FORMULATION OF AN OSCILLATOR CIRCUIT 33 where Hk are complex error functions. Note that the bias sources should be included in the dc term. 33). The total number of equations is 2N + 1, as each harmonic function Hk has real and imaginary parts, except the one corresponding to dc, given by Ho , which is real valued. 33) constitutes the harmonic balance formulation of the oscillator circuit, containing a single nonlinearity of current type only.

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