Raziyeh Karkoub - Sama technical and vocational trainingcollege Islamic azad university shoushtar Branch shoushtar Iran
Elahe Parsi - Sama technical and vocational trainingcollege Islamic azad university shoushtar Branch shoushtar Iran

This work proposes a structure of AMOS-varactors. A 5GHz LC-VCO designed in TSMC 0.18μm CMOS to improve phase noise and tuning range performance. The tuning range is from 5.05GHZ to 5.88GHz.The phase noise is -154.9dBc/Hz at 1MHz offset from the carrier. It meets the requirements for IEEE 802.11a WLAN standard.

CMOS LC VCO, spiral inductor, varactor phase noise, tuning range