A fully integrated SiGe bipolar 1.4 GHz Bluetooth voltage-controlled oscillator

A 2.4 GHz fully monolithic voltage-controlled oscillator for the Bluetooth wireless data communication standard is presented for the first time using a commercially available SiGe bipolar technology. An oscillator phase noise of -129 dBc/Hz is achieved at 3 MHz offset, with a tuning range of 500 MHz and a supply current of 6 mA at 3 V.