77.8 GHz Standing-wave Oscillator Based on a Tuneable Slow-wave Coplanar Stripline Resonator

This paper presents the design of a voltage controlled Standing-Wave Oscillator for applications in the E-band. A high quality factor tuneable Slow-wave Coplanar Stripline is used for the resonator. Varactors are distributed along the transmission line to mitigate the effect of their low Q-factor on the losses of the resonator. The Slow-wave Coplanar Stripline is asymmetrically sized to maximise the tuning range. The VCO achieves a measured phase noise of -114.9dBc at 80 GHz with 15mW power consumption and 3.3% continuous frequency tuning range.