47 0

A Spread Spectrum Clock Generator with Controllable Frequency Modulation Profile

Title
A Spread Spectrum Clock Generator with Controllable Frequency Modulation Profile
Author
권오경
Keywords
Spread spectrum clock generator (SSCG); phaselocked loop (PLL); triangular modulation profile; sawtooth modulation profile; electromagnetic interference (EMI)
Issue Date
2013-11
Publisher
대한전자공학회
Citation
2013 International SoC Design Conference (ISOCC). 2013-11 :123-126
Abstract
In this paper, a spread spectrum clock generator (SSCG) with controllable frequency modulation profile is presented. The electromagnetic interference (EMI) suppression can be improved by changing the frequency modulation profile without altering the spread ratio or modulation frequency. The frequency modulation profile is controlled from triangular to sawtooth by changing the slope of the modulation profile using simple digital logic. The proposed SSCG is designed using a 0.18-㎛ CMOS process technology. Phase-locked loop, phase interpolator-based frequency modulator, and digital logic are used for implementing the proposed SSCG. The performance is verified with HSPICE simulation. The output frequency, down spreading deviation, and modulation frequency are 270 ㎒, 1.54%, and 33 ㎑, respectively. Simulation results show that EMI suppression is controlled from 18.01 ㏈ to 20.26 ㏈ according to the frequency modulation profile. The simulated power consumption of the proposed SSCG is 7.7 ㎽ at the supply voltage of 1.8 V.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE06086262https://ieeexplore.ieee.org/document/6864002/http://repository.hanyang.ac.kr/handle/20.500.11754/73251
ISBN
978-1-4799-1142-4
DOI
10.1109/ISOCC.2013.6864002
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE