Title:
CIRCUIT FOR HIGH-SPEED DUTY RATIO REGULATION AND DOUBLE-END TO SINGLE-END CONVERSION OF PHASE-LOCKED LOOP
Document Type and Number:
WIPO Patent Application WO/2013/023385
Kind Code:
A1
Abstract:
Disclosed is a circuit for high-speed duty ratio regulation and double-end to single-end conversion of a phase-locked loop, which comprises three parts: a first stage of input waveform shaping, a second stage of a single edge detection circuit, and a third stage of a duty ratio recovery circuit. The technical solution allows double-ended signals outputted by a voltage-controlled oscillator of the phase-locked loop to be converted into single-ended signals. In addition, the duty ratio of the waveform outputted by the voltage-controlled oscillator of the phase-locked loop can be regulated to 50 percent, thereby outputting single-ended clock signals having a duty ratio of 50 percent.
Inventors:
WANG YOUHUA (CN)
ZHANG JUNAN (CN)
FU DONGBING (CN)
HU GANGYI (CN)
LIU JUN (CN)
LI RUZHANG (CN)
CHEN GUANGBING (CN)
ZHANG JUNAN (CN)
FU DONGBING (CN)
HU GANGYI (CN)
LIU JUN (CN)
LI RUZHANG (CN)
CHEN GUANGBING (CN)
Application Number:
PCT/CN2011/078759
Publication Date:
February 21, 2013
Filing Date:
August 23, 2011
Export Citation:
Assignee:
CHINA ELECTRONIC TECHNOLOGY CORP 24TH RES INST (CN)
WANG YOUHUA (CN)
ZHANG JUNAN (CN)
FU DONGBING (CN)
HU GANGYI (CN)
LIU JUN (CN)
LI RUZHANG (CN)
CHEN GUANGBING (CN)
WANG YOUHUA (CN)
ZHANG JUNAN (CN)
FU DONGBING (CN)
HU GANGYI (CN)
LIU JUN (CN)
LI RUZHANG (CN)
CHEN GUANGBING (CN)
International Classes:
H03K3/017
Foreign References:
| KR20050006987A | 2005-01-17 | |||
| US7126396B1 | 2006-10-24 |
Attorney, Agent or Firm:
TIDYTEND INTELLECTUAL PROPERTY LAW FIRM (CN)
北京同恒源知识产权代理有限公司 (CN)
北京同恒源知识产权代理有限公司 (CN)
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Claims: