Determine the input impedance zin- set the denominator of


The circuit shown in Figure is a simplified model of a "dual-mode" oscillator [28]. The voltage-dependent current source models a transistor. The circuit oscillates if Zin goes to infinity for s = jω.

(a) Determine the input impedance Zin.

(b) Set the denominator of Zin to zero for s = jω and obtain the startup condition and the two oscillation frequencies.

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Electrical Engineering: Determine the input impedance zin- set the denominator of
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