Abstract
An wide locking range divide-by-3 injection-locked frequency divider (ILFD) using a standard 0.18 μm CMOS process is presented. The ILFD circuit is realized with a capacitive cross-coupled n-core MOS dual-resonance RLC-tank oscillator with linear mixer to extend the locking range. The core power consumption of the ILFD core is 5.26 mW. The divider’s free-running frequency has dual-bands at 3.58 and 2.58 GHz by switching the varactor’s control bias, and at the incident power of 0 dBm the locking range is 6.4 GHz (68.09%), from the incident frequency 6.2 to 12.6 GHz.
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