Abstract: By analyzing the port voltage and current of the mutual inductance coupled circuit,a new method to realize mutually coupled circuit is proposed in this paper.A novel integrable mutually coupled circuit using DDCCs is also provided with the following advantages:① The primary self-inductance L1,the secondary self-inductance L2 and mutual inductance M (or -M) can be obtained by controlling switch's on or off;② The values of the primary self-inductance L1,the secondary self-inductance L2 and the mutual inductance M (or -M) can be independently controlled using the external resistor;③ The circuit has a simple structure,which only consists of 4 DDCCs,6 resistances and 2 capacitances.④ All the devices are grounded,so it is easy to be integrated.A double tuning circuit using the proposed mutually coupled circuit and its PSPICE simulation results are provided to verify its validity.