Patent ID: 6025765
Filing Date: 2000-02-15
Classification: H03B,H03H

Abstract:
A gyrator comprising:a loop having two ports, each port having two terminals, the loop comprising loop-connected first and second amplifiers, each of the first and second amplifiers having a transconductance delay built therein, the gain of the loop being greater than unity, a nodal capacitance appearing between two port's terminals, the capacitance transforming into a nodal inductance in the alternate port, the capacitance and inductance forming a resonant circuit for the gyrator oscillation, the nodal capacitance being a factor to the resonant frequency of the gyrator; anda plurality of inductive elements, each inductive element being coupled to the respective terminal of the two ports, thereby decreasing the nodal capacitance, so that the gyrator oscillates at a frequency which is higher than a natural resonant frequency obtained from the combination of the plurality of inductive elements and the nodal capacitance.