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A 0.35‐μm CMOS divide‐by‐3 LC injection‐locked frequency divider using linear mixers
Author(s) -
Jang ShengLyang,
Chen HanSheng,
Liu ChengChen,
Juang MiinHorng
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25597
Subject(s) - frequency divider , nmos logic , cmos , electrical engineering , microwave , voltage divider , engineering , current divider , voltage , optoelectronics , electronic engineering , materials science , transistor , topology (electrical circuits) , telecommunications
This letter proposes a divide‐by‐3 frequency divider employing the linear mixer topology; the divider was fabricated in the 0.35‐μm CMOS 2P4M CMOS technology. The divider consists of an nMOS cross‐coupled LC oscillator and two injection MOSFETs in series with the cross‐coupled nMOSFETs. At the drain bias voltage of 1.2 V, the divider free‐running frequency is tunable from 3.73 to 3.92 GHz, and at the incident power of 0 dBm, the operational locking range is about 0.69 GHz, from the incident frequency 10.99 to 11.68 GHz. The core power consumption is 6.9 mW. The die area is 0.83 × 0.94 mm 2 . © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2740–2743, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25597