A 7.4 Gb/s Forwarded Clock Receiver Based on First-Harmonic Injection-Locked Oscillator Using AC Coupled Clock Multiplication Unit in 0.13μm CMOS

This paper presents a forwarded clock receiver based on an injection-locked oscillator (ILO) with a simple clock multiplication unit to reduce the clock jitter and power consumption. The clock multiplication unit employs AC coupling and superposition technique to generate first-harmonic pulses. The first-harmonic injection reduces the rms and peak to peak jitter of the ILO output clock by about 0.65ps (29%) and 46.06ps (65%), respectively. The measured power efficiency of the receiver is 1.69mW/Gbps at 7.4Gb/s data rate in a 1.2V 0.13 mu m CMOS process.