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A 600 /22W BAW-Tuned Quadrature VCO Using Source
一款基于0.13μm CMOS工艺的BAW调谐正交压控振荡器，采用新型源极退化耦合机制实现低功耗高性能。
2.1 GHz, 600μW@1V, -143.5dBc/Hz@1MHz, FOM 212.1dB
BAW调谐正交压控振荡器源极退化耦合低功耗相位噪声
▸采用时间变化的源极退化耦合机制
▸二进制加权电容阵列实现精细频率调谐
▸降低串联耦合晶体管的电压余量需求
Abstract
A bulk-acoustic wave (BA W)-tuned quadrature voltage-controlled oscillator (BQVCO) designed in 0.13 m CMOS is presented. The BQVCO operates at 2.1 GHz, with a power consumption of 600 W at a 1 V supply. The oscillator achieves a phase noise of 143.5 dBc/Hz at 1 MHz offset with a figure of merit (FOM) of 212.1 dB. A new time-varying source degeneration coupling mechanism has been used to quadra- ture-couple the two oscillator cores for I/Q signal generation, reducing the required headroom of the series coupling transistors. A binary weighted capacitor array is designed for fine frequency tuning of the QVCO. For comparison, an identical QVCO with on-chip LC tank is fabricated, achieving a FOM of 179.7 dB.