Analysis of nonlinearities in injection-locked frequency dividers

Xiaoyan Gui; Zhiming Chen; Michael M. Green

doi:10.1109/TMTT.2015.2396897

Analysis of nonlinearities in injection-locked frequency dividers

Xiaoyan Gui, Zhiming Chen, Michael M. Green

School of Integrated Circuits and Electronics

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The locking range of injection-locked frequency dividers is investigated and it is shown that the presence of nonlinearities, such as those exhibited in a current mode logic (CML) D flip-flop (DFF)-based divider, can result in a wider frequency locking range. A new approach to evaluate such nonlinearities is described. A new divider topology benefiting from the nonlinearity is presented that exhibits both higher operating frequencies and similar locking range compared to the conventional CML DFF-based topology. The chip was fabricated through a TSMC 90-nm CMOS process.

Original language	English
Article number	7038230
Pages (from-to)	945-953
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	63
Issue number	3
DOIs	https://doi.org/10.1109/TMTT.2015.2396897
Publication status	Published - 1 Mar 2015

Keywords

Frequency divider
injection locking
nonlinearity

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10.1109/TMTT.2015.2396897

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AB - The locking range of injection-locked frequency dividers is investigated and it is shown that the presence of nonlinearities, such as those exhibited in a current mode logic (CML) D flip-flop (DFF)-based divider, can result in a wider frequency locking range. A new approach to evaluate such nonlinearities is described. A new divider topology benefiting from the nonlinearity is presented that exhibits both higher operating frequencies and similar locking range compared to the conventional CML DFF-based topology. The chip was fabricated through a TSMC 90-nm CMOS process.

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Analysis of nonlinearities in injection-locked frequency dividers

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Keywords

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