Wide-locking range divide-by-4 injection-locked frequency divider using injection MOSFET DC-biased above threshold region.

A novel wide locking range divide-by-4 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-4 ILFD uses two injection transistors in series and DC-biased above threshold voltage and a frequency doubler to enhance the function of linear mixers. At the drain-source bias of 0.9 V and at the incident power of 0 dBm, the locking range of the divide-by-4 is 2.6 GHz; from the incident frequency 12.2 to 14.8 GHz, the percentage is 19.26%. The core power consumption is 10.35 mW. The die area of ILFD is 1.026 × 0.943 mm2. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]