An efficient approach for reducing inductive noise using shield insertion [IC layout]

An efficient technique to reduce the inductive noise is to insert shields among signal wires. These shields are quiet wires that are either connected to the ground or to the power supply. An efficient approach to determine the locations and number of shields needed to satisfy certain noise constraints is provided. We use an already existing noise model, which is flexible and fast, to be included in the core of our algorithm. Experimental results and SPICE simulations show that our approach is fast compared to the best-known approach and needs few number of shields to satisfy the noise constraints.