›› 2014, Vol. 23 ›› Issue (7): 78401-078401.doi: 10.1088/1674-1056/23/7/078401
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
朱思衡a, 司黎明a, 郭超a, 史君宇a, 朱卫仁b
Zhu Si-Heng (朱思衡)a, Si Li-Ming (司黎明)a, Guo Chao (郭超)a, Shi Jun-Yu (史君宇)a, Zhu Wei-Ren (朱卫仁)b
摘要: We propose a novel hybrid phase-locked loop (PLL) architecture for overcoming the trade-off between fast locking time and low spur. To reduce the settling time and meanwhile suppress the reference spurs, we employ a wide-band single-path PLL and a narrow-band dual-path PLL in a transient state and a steady state, respectively, by changing the loop bandwidth according to the gain of voltage controlled oscillator (VCO) and the resister of the loop filter. The hybrid PLL is implemented in a 0.18-μm complementary metal oxide semiconductor (CMOS) process with a total die area of 1.4× 0.46 mm2. The measured results exhibit a reference spur level of lower than -73 dB with a reference frequency of 10 MHz and a settling time of 20 μs with 40 MHz frequency jump at 2 GHz. The total power consumption of the hybrid PLL is less than 27 mW with a supply voltage of 1.8 V.
中图分类号: (Microwave integrated electronics)