Synchronization scheme for brick-based rotary oscillator arrays

In this paper, a brick-based rotary oscillator array (ROA) synchronization scheme is proposed, which directs all the rotary traveling wave oscillators (RTWOs) in the ROA to rotate in a pre-determined direction. This synchronization scheme increases the speed of the ROA synchronization process by eliminating the repetitive start-up trials due to start-ups from incorrect points on the oscillatory array. Simulation results confirm the effectiveness of the ROA synchronization scheme. Furthermore, the synchronization scheme is applied to an ROA-based clock generation and distribution network designed for an ISPD 10 clock benchmark in order to demonstrate its application at a larger scale.

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