A novel differential Hartley CMOS oscillator circuit topology

This paper reports a novel differential Hartley oscillator circuit topology. The circuit topology exploits the transformer coupling to enhance the effective quality factor (Q) of the LC tank and shows a potential for achieving a high spectral purity at the mm-wave frequency range. The oscillator topology has been designed for 60 GHz in 28 nm fully-depleted silicon-on-insulator (FDSOI) CMOS technology.