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

Abstract

A wide-band divide-by-2 injection-locked frequency divider (ILFD) based on a distributed 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 a 65 nm 1P7M LP-CMOS process, the divide-by-2 ILFD consumes 7 mW from a 0.7 V power supply and realizes 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.