Title:
PHASE LOCKED LOOP APPARATUS INCLUDING MULTIPLE NEGATIVE FEEDBACK LOOPS
Document Type and Number:
WIPO Patent Application WO/2016/027945
Kind Code:
A1
Abstract:
The present invention provides a phase locked loop apparatus having multiple negative feedback loops, comprising: a first negative feedback loop for comparing a reference signal with a divided signal of an output signal output from a voltage controlled oscillator, outputting a voltage corresponding to a frequency difference and a phase difference, and locking a frequency and a phase of a predetermined output signal; and a second negative feedback loop including a generation switch and a generation capacitor which are configured by a negative feedback loop different from the first negative feedback loop and serve as a negative feedback to an external loop filter output signal of the first negative feedback loop.
Inventors:
CHOI YOUNG-SHIG (KR)
Application Number:
PCT/KR2015/000003
Publication Date:
February 25, 2016
Filing Date:
January 02, 2015
Export Citation:
Assignee:
NAT UNIV PUKYONG IND UNIV COOP (KR)
International Classes:
H03L7/08; H03L7/093
Foreign References:
| KR101190313B1 | 2012-10-12 | |||
| JPH1098378A | 1998-04-14 | |||
| JP2000315945A | 2000-11-14 | |||
| US20140021992A1 | 2014-01-23 | |||
| US20140225653A1 | 2014-08-14 | |||
| US20070025490A1 | 2007-02-01 |
Attorney, Agent or Firm:
KASAN IP & LAW FIRM (KR)
특허법인 가산 (KR)
특허법인 가산 (KR)
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