Dual-Injection-Locked 1/2 Divider with Optimized VCO Loaded Q and Current
Additional Document Info
A new dual-injection locked frequency divider (dual-ILFD) with wide locking range and low-power consumption is proposed and developed together with a divide-by-2 current mode logic (CML) divider. CML divider is connected at the output of dual-ILFD for achieving constant output amplitude. The chip was fabricated using a 0.18-m BiCMOS process. The dual-ILFD enhances the locking range with low-power consumption through optimized load quality factor (Q L) and output current amplitude (iOSC) simultaneously, achieving a locking range of 692 MHz between 7.512 and 8.204 GHz, which is almost 10 times larger than a single-injection counterpart. The core of dual-ILFD consumes 2.93 mA with 1.5 V supply. 2013 IEEE.