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http://dx.doi.org/10.5515/KJKIEES.2010.21.5.453

A 18 GHz Divide-by-4 Injection-Locked Frequency Divider Based on a Ring Oscillator  

Seo, Seung-Woo (School of Electrical Engineering, Korea University)
Seo, Hyo-Gi (School of Electrical Engineering, Korea University)
Rieh, Jae-Sung (School of Electrical Engineering, Korea University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.5, 2010 , pp. 453-458 More about this Journal
Abstract
In this work, a 18 GHz divide-by-4 injection-locked frequency divider(ILFD) based on ring oscillator has been developed in $0.13-{\mu}m$ Si RFCMOS technology. The free-running oscillation frequency is from 4.98 to 5.22 GHz and output power is about －30 dBm, consuming 33.4 mW with a 1.5 V supply voltage. At 0 dBm input power, the locking range is 3.5 GHz(17.75~21.25 GHz) and with varactor tuning, the operating range is increased up to 5.25 GHz(16.0~21.25 GHz). The fabricated chip size is $0.76\;mm{\times}0.57\;mm$ including DC and RF pad.
Keywords
Ring Oscillator; Injection-Locked Frequency Divider(ILFD);
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