A Stack-Mode Dual-Band Voltage-Controlled Oscillator for Multistandard Wireless Applications

A stack-mode dual-band VCO, which can be applied to 802.11a/b/g and Bluetooth multi-standard zero-IF transceiver, is proposed with low power consumption of 12.22 mW and excellent phase noise performance of -126.2 and -120.1 dBc/Hz at 1MHz offset from 2.44 and 5.23 GHz carriers. The simulation is performed in Agilent ADS and this circuit with chip area of 1.18times0.67 mm
²
will be implemented by 0.18-mum CMOS process