A novel power plane with integrated simultaneous switching noise mitigation capability using high impedance surface

A novel technique for suppressing power plane resonance at microwave and radio frequencies is presented. The new concept consists of replacing one of the plates of a parallel power plane pair with a high impedance surface or electromagnetic band gap structure. The combination of this technique with a wall of RC pairs extends the lower edge of the effective bandwidth to dc, and allows resonant mode suppression up to the upper edge of the bandgap. The frequency range for noise mitigation is controlled by the geometry of the HIGP structure.