A multi-segment clocking scheme to reduce on-chip EMI

This paper presents an EMI reduction technique for VLSI circuits in which a multi-segment clock is employed. It is proven that utilizing a clock signal with relaxed edge rate can suppress the harmonic tones at the output spectrum. However, it calls for higher short-circuit power dissipation in the clocked devices. Proposed multi-segment clock signal reduces the electromagnetic radiations while keeping the short circuit power dissipation in an acceptable level. Simulation results in 65-nm CMOS process are presented to prove the capability of such a clock network in EMI reduction.