A 0.93-mA Spur-Enhanced Frequency Synthesizer for L1/L5 Dual-Band GPS/Galileo RF Receiver

作者：Hwang In Chul^*; Baek Donghyun

来源：IEEE Microwave and Wireless Components Letters, 2010, 20(6): 355-357.

DOI：10.1109/LMWC.2010.2047533

• Charge pump circuit
• frequency synthesizers
• Galileo
• GPS
• phase locked loops
• phase noise
• reference spur

A versatile frequency synthesizer for a L1/L5 dual-band GPS/Galilleo dual-mode RF receiver is designed with a 0.13 mu m CMOS process. For spur reduction, a simple low-glitch charge-pump circuit (CPC) is proposed in this letter. The fabricated chip achieves the in-band phase noise of -92 dBc/Hz and the spur performance of -71.23 dBc at 8.184 MHz offset from 1.571 GHz carrier with a second-order loop filter.

• 出版日期2010-6