Low Jitter Clock Source for Radio Frequency Data Converters

An innovative, ultra low noise, single chip phase locked oscillator is proposed. The oscillator is fully integrated on standard MMIC process. It operates in the frequency range of 40 – 100 GHz with timing jitter of 20fs. At the core of the oscillator is a rectangular cavity based resonator. To our knowledge, this is the first ever implementation of a waveguide cavity on standard MMIC process. This new technique, will allow the realization of ultra small high performance integrated oscillators for future market demands. The phase locked oscillator consists of a cavity oscillator, phase frequency detector, prescaler and a loop filter. All components will be integrated on a standard GaAs HBT process.