The ring oscillator data across the wafer is useful for process monitoring and for obtaining location based on-chip variation information. 1. Process monitoring. Observing ring oscillator frequency, ...

The ring oscillator cleverly produces three phase-shifted square waves such that a binary combination of the three phases offers six unique states.

Now normally there would be no news in someone making a ring oscillator with a 7404. It really wouldn’t be a hack with a run-of-the-mill 74LS or 74HC part.

The new work creates a graphene ring oscillator (with gold wiring) by growing the graphene directly on the device via chemical vapor deposition.

The good news is that they produced 55 functional ring oscillators, with a performance of up to 2.8 GHz. This is an important demonstration that the process works.

Scientists have developed a new wideband ring voltage-controlled oscillator (VCO), which is a key component of an IR-UWB (Impulse Radio Ultra-wideband) Radar system.