Title :
A Tiny Quadrature Oscillator Using Low-Q Series LC Tanks
Author :
Tohidian, Massoud ; Ahmadi-Mehr, S. Amir-Reza ; Staszewski, R. Bogdan
Author_Institution :
Electron. Res. Lab., Delft Univ. of Technol., Delft, Netherlands
Abstract :
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 mm2 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.
Keywords :
UHF oscillators; invertors; microwave oscillators; phase noise; class-D inverters; frequency 2.66 GHz to 4.97 GHz; low-Q series LC tanks; phase noise; quadrature oscillator topology; ring structure; tiny quadrature oscillator; CMOS integrated circuits; Inductors; Inverters; Phase noise; Ring oscillators; Tuning; Class-D oscillator; LC oscillator; low area; low phase noise; low-${rm Q}$ inductor; nanoscale CMOS; quadrature oscillator; ring oscillator; series LC; wide tuning;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2015.2440663
