DocumentCode :
1810482
Title :
A high frequency resolution Digitally-Controlled Oscillator using single-period switching scheme
Author :
Kodama, Kazutoshi ; Iizuka, Tetsuya ; Asada, Kunihiro
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
fYear :
2011
fDate :
12-16 Sept. 2011
Firstpage :
399
Lastpage :
402
Abstract :
This paper proposes a high frequency resolution Digitally-Controlled Oscillator (DCO) using single-period control bit switching scheme. The proposed scheme controls the tuning word of DCO in a single period for the fine frequency tuning. The LC type DCO is implemented to realize the proposed scheme, and is fabricated using a standard 65nm CMOS technology. The measurement results show that the implemented DCO improves the frequency resolution from 0.63MHz to 0.27MHz without phase noise degradation with an additional area of 200μm2.
Keywords :
circuit switching; digital control; oscillators; phase locked loops; fine frequency tuning; frequency 0.27 MHz; frequency 0.63 MHz; high frequency resolution digitally-controlled oscillator; single-period control bit switching scheme; size 65 nm; Capacitance; Capacitors; Frequency measurement; Phase locked loops; Pulse generation; Switches; Tuning;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
ESSCIRC (ESSCIRC), 2011 Proceedings of the
Conference_Location :
Helsinki
ISSN :
1930-8833
Print_ISBN :
978-1-4577-0703-2
Electronic_ISBN :
1930-8833
Type :
conf
DOI :
10.1109/ESSCIRC.2011.6044991
Filename :
6044991
Link To Document :
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