A novel clock recovery circuit for fully monolithic integration

Koichi Murata, T. Otsuji

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)


This paper presents a novel clock recovery circuit that offers fully monolithic integration. The circuit consists of just the transistor gates of an exclusive OR for an edge-detector and a free-running T-type flip-flop for a high-Q oscillator. As the first proof of the concept, we assemble a circuit using discrete integrated circuits and confirm half-rate clock extraction from an nonreturn to zero data stream input. In order to examine feasibility of the circuit in practical use, we assemble a clock and data recovery circuit. The circuit exhibits stable operation with the bit-error rate of less than 1 x 10 12.

Original languageEnglish
Pages (from-to)2528-2533
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number12
Publication statusPublished - 1999
EventProceedings of the 1997 Conference on Eastern Hardwoods, Resources, Technologies, and Markets - Harrisburg, PA, USA
Duration: 1997 Apr 211997 Apr 23


  • And optical transmission systems
  • Clock and data recovery circuit
  • Clock recovery circuit
  • Fully monolithic integration
  • Injection locking


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