A Low-Noise 15GHz Divide-by-3 Colpitts Injection Locked Frequency Divider

A new LC-injection-locked frequency divider (LC A new LC-injection-locked frequency divider (LCILFD) based on voltage controlled oscillator is proposed. The proposed circuit is realized with two current-switching Colpitts CMOS LC-tank oscillator in which no extra elements are usedfor injecting. At the supply voltage of 1.5 v, the locking range of the proposed divider is from 14.15 to 15.95 GHz. The proposed circuit was designed using a 0.18 μm RF CMOS technology and simulation results are presented.

Keywords:

Injection locked frequency divider , low power , phase noise , voltage controlled oscillator