A Wide-Band Divide-By-2 Injection-Locked Frequency Divider Based on Dual-Resonance Tank

A wide-band divide-by-2 injection-locked frequency divider (ILFD) based on a dual-resonance high-order tank is presented. The ILFD employs a distributed LC network as the dual resonance tank, and achieves an ultra-wide locking range. Fabricated in 1P7M 65 nm LP-CMOS process, the divide-by-2 ILFD consumes 7 mW from a 0.7V power supply, and realized a locking range of 87.0%, from 13 GHz to 33 GHz. The core circuit occupies an area of 0.22 mm×0.5 mm.