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2019-09-20
A High-Swing Class-C VCO with Amplitude Feedback Loop for Low Phase Noise and Robust Start-Up
By
Progress In Electromagnetics Research M, Vol. 85, 125-134, 2019
Abstract
A novel high-swing Class-C VCO with an amplitude feedback loop is presented. The amplitude feedback loop is used to ensure the start-up of the VCO which also makes the proposed VCO always have an optimal phase noise against the PVT variations automatically. The proposed circuit is implemented in a 65 nm CMOS process. The VCO has exhibited a measured phase noise of -128.6 dBc/Hz at 1 MHz offset from the 1.52 GHz carrier frequency with a 1.4 mW power consumption. The variation of measured phase noise at 1 MHz offset is less than 2.3% while temperature changes from -40˚C to 100˚C.
Citation
Qi Liu Ye-Bing Gan Tian-Chun Ye , "A High-Swing Class-C VCO with Amplitude Feedback Loop for Low Phase Noise and Robust Start-Up," Progress In Electromagnetics Research M, Vol. 85, 125-134, 2019.
doi:10.2528/PIERM19071803
http://www.jpier.org/PIERM/pier.php?paper=19071803
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