Phase noise reduction in RF CMOS VCO's via capacitive filtering
This paper presents the experimental results of two different techniques, the already known inductive degeneration technique and the new capacitive filtering technique, for reducing the phase noise in RF CMOS VCO's. The techniques are applied to two distinct VCO designs, showing that the largest phase noise reduction (up to 7 dB at 3 MHz offset frequency from the carrier) is achieved via inductive