US Patent 11664658 Electrostatic protection device

An electrostatic protection device for protecting an input port of an electronic circuit. The electrostatic protection device includes a first stacked coil, a second stacked coil, and an input terminal, wherein the second stacked coil is inductively coupled to the first stacked coil. The first stacked coil comprises a first coil input connected to the input terminal, and a first coil output port connected to a lower frequency ESD protection circuit, and wherein the lower frequency ESD protection circuit comprises a lower frequency output. The second stacked coil comprises an output port connected to a higher frequency ESD protection circuit, and wherein the higher frequency ESD protection circuit comprises a higher frequency output.