We present a two-integrator quadrature oscillator, which covers the whole bandwidth of UWB applications. A circuit prototype in a 130?nm CMOS technology is continuously tuneable from 3.1 to 10.6?GHz. The circuit die area is less than 0.013?mm2, leading to a figure-of-merit FOMA of ?176.7?dBc/Hz at the upper frequency. The supply voltage is 1.2?V, and the power consumption is 7?mW at the lower frequency and 13?mW at the upper frequency.