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A 0.18 µm low power CMOS radio frequency LC oscillator for broadband wireless communication applications

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4 Author(s)
Huimin Liu ; IC Design Center, Nankai Univ., Tianjin, China ; Xiaoxing Zhang ; Yujie Dai ; Yingjie Lv

This paper presents a detailed analysis on the relationship between quality factor (Q) and the amplitude of CMOS LC VCO. It is shown that controlled voltage amplitude is benefit for acquiring a large Q of the oscillator. Low power and phase noise of LC VCO can be optimized by tuning Q of tank. The analysis has been carried out both theoretically and by simulation for the design of a low power and low phase noise LC VCO in a standard 0.18μm CMOS process. The VCO with on-chip spiral inductor is operating from 2.9 to 3.9 GHz. The simulation phase noise level is -113 dBc/Hz at 1MHz offset frequency while dissipating only 2.4mWat a 1.8V power supply.

Published in:

Broadband Network and Multimedia Technology (IC-BNMT), 2010 3rd IEEE International Conference on

Date of Conference:

26-28 Oct. 2010