A Tiny Quadrature Oscillator Using Low-Q Series LC Tanks

作者：Tohidian Massoud^*; Ahmadi Mehr S Amir Reza; Staszewski R Bogdan

来源：IEEE Microwave and Wireless Components Letters, 2015, 25(8): 520-522.

DOI：10.1109/LMWC.2015.2440663

• Class-D oscillator
• LC oscillator
• low area
• low phase noise
• low-Q inductor
• nanoscale CMOS
• quadrature oscillator
• ring oscillator
• series LC
• wide tuning

A new quadrature oscillator topology is proposed, which arranges four low-Q series LC tanks in a ring structure driven by inverters operating in class-D. With a very small area of 0.007 mm(2) that is comparable to conventional ring oscillators, this oscillator has 7-20 dB better phase noise FoM of 177 dB. It is widely tunable for nearly an octave from 2.66 to 4.97 GHz.

• 出版日期2015-8