DocumentCode :
1206812
Title :
A 15-GHz broad-band /spl divide/2 frequency divider in 0.13-μm CMOS for quadrature generation
Author :
Bonfanti, A. ; Tedesco, A. ; Samori, C. ; Lacaita, A.L.
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Volume :
15
Issue :
11
fYear :
2005
Firstpage :
724
Lastpage :
726
Abstract :
This letter presents a 0.13-μm CMOS frequency divider realized with an injection-locking ring oscillator. This topology can achieve a larger input frequency range and better phase accuracy with respect to injection-locking LC oscillators, because of the smoother slope of the loop gain phase-frequency plot. Post layout simulations show that the circuit is able to divide an input signal spanning from 7 to 19GHz, although the available tuning range of the signal source limited the experimental verification to the interval 11-15GHz, featuring a 31% locking range. The divider dissipates 3mA from a 1.2-V power supply.
Keywords :
CMOS integrated circuits; frequency dividers; injection locked oscillators; microwave frequency convertors; 0.13 micron; 1.2 V; 3 mA; 7 to 19 GHz; CMOS frequency divider; LC oscillators; frequency divider; frequency division; injection-locked oscillators; quadrature generation; ring oscillator; Capacitance; Circuits; Frequency conversion; Injection-locked oscillators; Mixers; Phase noise; Poles and zeros; Ring oscillators; Tail; Transconductance; Frequency division; injection locked oscillators; ring oscillators;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2005.858997
Filename :
1525054
Link To Document :
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