Analysis, Design and Simulation of Capacitive Load Balanced Rotary Oscillatory Array

The high frequency of the rotary clocking technology is often susceptible to implementation parameters such as the variation in the total capacitive load distribution between the rings. SPICE simulations performed on the rotary rings with unbalanced capacitive load distribution show a 30.31% variation in the simulated frequencies across the rings. To address this problem, two novel methodologies called OCLB and SOCLB, are formulated for the optimal capacitive load balancing and sub-optimal capacitive load balancing with minimized wirelength, respectively. SPICE simulations performed with OCLB show 0.30% variation in the simulated frequencies across the rings. Further, SOCLB results in an average wirelength improvement of 69.24% over OCLB with a relatively balanced capacitive load distribution. SPICE simulations performed with SOCLB show 2.40% variation in the simulated frequencies across the rings, improved significantly over the 30.31% variation of the unbalanced case.