Energy-Efficient Cyclic-Coupled Ring Oscillator With Delay-Based Injection Locking

This brief presents a new tristate-based delay cell to realize the recently proposed delay-based injection locking in ring oscillators. The circuit is then applied implement cyclic-coupled oscillator (CCRO). Compared an inverter-based CCRO with multi-drive injection, eliminates static short-circuit current drawn from supply when drive circuits are conflicting logic states, thus reducing power consumption of CCRO. functionality and improved energy efficiency demonstrated simulations implemented 28-nm CMOS process. employing technique achieves up 25% lower over 20% power-delay product (PDP) compared