This paper reports on results obtained using an oscillator incorporating active inductance and active capacitance concepts. The only passive reactance used is MIM capacitor. With the goal of high output power and low area consumption, the analyzed circuit was realized in a 300 x 300 mum(2) compact area. A commercially available SiGe heterostructure bipolar transistor MMIC technology with relaxed lateral scaling of 1.2 mum has been used. This oscillator design provides a load independent oscillation condition provided by a cascode buffer stage. An output power of +12.5 dBm at 15.6 GHz is achieved.