Design of a Current Starved Ring Oscillator Based VCO for Phase-Locked Loop

Khairun Nisa’ Minhad (Universiti Kebangsaan Malaysia)
Zainab Kazemi (Universiti Kebangsaan Malaysia)
Mamun Bin IbneReaz (Universiti Kebangsaan Malaysia)
Jubayer Jalil (Universiti Kebangsaan Malaysia)
Noorfazila Kamal (Universiti Kebangsaan Malaysia)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 12, No 9: September 2014

A design of the proposed VCO was developed for PLL in radio frequency identification (RFID) application. By using current starved ring oscillator, the designed circuit is simulated using 0.18-μm CMOS process in Mentor Graphics environment. The results show that the voltage drawn is around 5V supplied at VDD, and the product of this current and voltage has approximate 105.3 mW power consumption while the VCO generates 212 MHz at 1.4 V.