An ideal gyrator is a two-port electrical component that inverts impedance. Gyrators are frequently used to convert a capacitance to an inductance. Connect a capacitor with capacitance $C$ and complex impedance $\frac{1}{sC}$ to one port of the gyrator. The impedance at the other port is then $s{G}_{1}{G}_{2}C$, which is equivalent to an inductance of ${G}_{1}{G}_{2}C$.