Abstract
A novel divide-by-3 injection-locked frequency divider (ILFD) is proposed. The ILFD circuit is realized with a cross-coupled n-core MOS LC-tank oscillator embedded with a push-push signal generator and two injection MOSFETs for coupling the injection signal into the resonator. The ILFD uses the linear mixer to extend the locking range and has been implemented in a standard 0.18µm CMOS process. The core power consumption of the ILFD core is 3.12mW. The divider's free-running frequency is tunable from 4.26GHz to 4.9GHz by tuning the varactor's control bias, and at the incident power of 0dBm the locking range of the ILFD used as a divide-by-3 divider is 1.5GHz, from 12.5GHz to 14.0GHz.
Published Version
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