A 5.8 GHz Low-Phase-Noise LC-QVCO Using Splitting Switched Biasing Technique

作者：Kim Ki Won^*; Chang Ho Jun; Kim Young Min; Yun Tae Yeoul

来源：IEEE Microwave and Wireless Components Letters, 2010, 20(6): 337-339.

DOI：10.1109/LMWC.2010.2047523

• 1/f noise
• phase noise
• quadrature voltage-controlled oscillation (QVCO)
• splitting switched biasing
• voltage-controlled oscillation (VCO)

A 5.8 GHz LC-tank quadrature voltage-controlled oscillator (QVCO) is proposed for achieving low phase noise. Phase noise contributed by the tank voltage amplitude and the 1/f noise of the tail transistors were simultaneously improved when the splitting switched biasing technique was adopted. Measured results showed a tuning range from 5.09 to 6.15 GHz, a phase noise of -119.39 dBc/Hz at an offset of 1 MHz, and a phase-noise figure-of-merit of -188.21 dB, while consuming 3.06 mA for the core QVCO from a 1.6 V supply. The proposed QVCO was designed using a 0.18 mu m CMOS process.

• 出版日期2010-6