论文信息 - Low power quadrature VCO with the back-gate coupling

Low power quadrature VCO with the back-gate coupling

A new quadrature VCO (QVCO) is proposed with the NMOS back-gate as a coupling transistors. The advantage of proposed QVCO is analyzed in terms of power consumption and phase noise. Additional design techniques are applied to improve the symmetry of the complimentary VCO and to suppress the tail current noise contribution. The very low power QVCO has been fabricated in 0.18/spl mu/m CMOS technology for 1GHz band operation and obtained phase noise of -120 dBc/Hz at 1 MHz offset while dissipating only 3 mA for the whole QVCO from 1.8V supply.

Sang-Gug Lee | Hye-Ryoung Kim | Sung-Do Kim | Seung-Min Oh | Young-Sik Youn

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