摘要

Based on the self-biased current-reuse complementary structure and interposed network, a low power LC voltage controlled oscillator (VCO) is presented, which can simultaneously achieve ultra-low power consumption and low phase noise. Firstly, thanks to the self-biased voltage-diving technique, the LC-VCO consumes ultra-low power consumption. Secondly, the novel interposed network can greatly improve the VCO's phase noise performance. The proposed VCO is implemented in SMIC 180 nm CMOS process with a small area of 0.15mm(2), which exhibits phase noise of -118.3 dBc/Hz at 1MHz offset from the 2.5 GHz carrier at 0.8V supply voltage while the power dissipation is only 0.23mW.

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