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Low Power Low Phase Noise LC Quadrature VCO Topology
Ji-Hoon KIM Hyung-Joun YOO
IEICE TRANSACTIONS on Electronics
Publication Date: 2006/03/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Electronic Circuits
LC QVCO, low power, low phase noise,
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A simple low power low phase noise LC QVCO (Quadrature Voltage Controlled Oscillator) topology is proposed. The topology minimizes phase noise by eliminating the contributions from the tail current source and coupling transistors. With no more than 3.36 mW power consumption from a 1.2 V power supply, the VCO achieves -124 dBc/Hz phase noise performance at 1 MHz offset from the 2.85 GHz carrier frequency.