Abstract
SummaryA novel wide locking range divide‐by‐2 injection‐locked frequency divider (ILFD) is proposed in the paper and was implemented in the TSMC 0.18‐µm 1P6M CMOS process. The divide‐by‐2 ILFD is based on a cross‐coupled voltage‐controlled oscillator (VCO) with an LC resonator and injection MOSFETs with source voltage coupled from ILFD output, and the injection MOSFET mixer is biased in subthreshold region. At the drain–source bias of 0.9 V, and at the incident power of 0 dBm the locking range of the divide‐by‐2 ILFD is 6.4 GHz; from the incident frequency 3.7 GHz to 10.1 GHz, the percentage is 92.75%. The core power consumption is 16.56 mW. The die area is 0.839 × 0.566 mm2. Copyright © 2015 John Wiley & Sons, Ltd.
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