LOW-POWER SELF-INJECTION-LOCKED CMOS ARMSTRONG VOLTAGE-CONTROLLED OSCILLATOR

作者：Jang Sheng Lyang; Liao Ying Hsiang; Chang Chia Wei; Juang M H^*

来源：Microwave and Optical Technology Letters, 2011, 53(4): 728-731.

DOI：10.1002/mop.25826

• CMOS
• low power
• Armstrong oscillator
• self-injection locking
• cross-coupled oscillator

A 7-GHz NMOS Armstrong cross-coupled voltage-controlled oscillator (VCO) is designed and implemented in a 0.18 mu m CMOS one-poly six-metal (1P6M) process. The differential VCO uses two single-ended Armstrong oscillators coupled via a pair of cross-coupled transistors and a pair of varactors, and it also uses the self-injection locking technique to reduce the phase noise. At the dc drain-source voltage of 0.6 V, the output phase noise of the VCO is -110.9 dBc/Hz at 1-MHz offset frequency from the carrier frequency of 7.45 GHz and the figure of merit is -186.26 dBc/Hz. Total VCO core power consumption is 1.614 mW. Tuning range is 1.16 GHz, from 6.42 to 7.58 GHz, while the control voltage was tuned from 0 to 2 V.

• 出版日期2011-4