A digital controlled oscillator based on controlled phase shifting

Author

Donzellini, Giuliano ; Caviglia, Daniele D. ; Parodi, Giancarlo ; Ponta, Domenico ; Repetto, Paolo

Author_Institution

Dept. of Biophys. & Electron. Eng., Genoa Univ., Italy

Volume

36

Issue

8

fYear

1989

fDate

8/1/1989 12:00:00 AM

Firstpage

1101

Lastpage

1105

Abstract

A new architecture for a digitally controlled oscillator is presented. It is based on a controlled phase shifting principle and shows phase and frequency characteristics comparable to those of simple accumulator-type rate-multiplier-based circuits. An important feature of the proposed configuration is the possibility of a high clock frequency, also with conventional low-cost technologies. The oscillator is especially suitable for applications involving synchronization of different systems. Its transfer characteristic, frequency resolution, and phase performance are evaluated and discussed. Results from computer simulation and functional verification are reported

Keywords

phase shifters; variable-frequency oscillators; accumulator-type rate-multiplier-based circuits; clock frequency; computer simulation; controlled phase shifting; digital controlled oscillator; frequency characteristics; frequency resolution; functional verification; phase performance; synchronization; transfer characteristic; Circuits; Clocks; Digital control; Digital systems; Digital-controlled oscillators; Frequency conversion; Frequency synchronization; Jitter; Phase locked loops; Signal resolution;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/31.192420

Filename

192420