Title :
A dithering-less 54.79-to-63.16GHz DCO with 4-Hz frequency resolution using an exponentially-scaling C-2C switched-capacitor ladder
Author :
Zhiqiang Huang ; Luong, Howard C.
Author_Institution :
Hong Kong Univ. of Sci. & Technol., Hong Kong, China
Abstract :
An exponentially-scaling C-2C switched-capacitor ladder is proposed for mm-Wave DCOs to achieve high frequency resolution with small chip area. The 65nm-CMOS DCO prototype measures frequency resolution of 4Hz over a frequency range from 54.79 to 63.16GHz with phase noise of -90.7~-94.1dBc/Hz at 1MHz frequency offset while consuming 18mW, corresponding to FOMT from -176.6 to -180 dBc/Hz. The DCO occupies a core area of 0.1 mm2 with only 0.012mm2 for the C-2C switched ladder capacitor.
Keywords :
CMOS integrated circuits; ladder networks; oscillators; switched capacitor networks; CMOS integrated circuit; digitally controlled oscillators; dithering-less DCO; exponentially scaling C-2C switched capacitor ladder; frequency 54.79 GHz to 63.16 GHz; power 18 mW; size 65 nm; small chip area DCO; switched ladder capacitor; Capacitors; Frequency measurement; Noise measurement; Phase measurement; Phase noise; Switches; Tuning; ADPLL; DCO; frequency resolution; mm-Wave;
Conference_Titel :
VLSI Circuits (VLSI Circuits), 2015 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-86348-502-0
DOI :
10.1109/VLSIC.2015.7231269
