Open AccessEnhanced locking range technique for divide‐by‐3 differential injection‐locked frequency divider
Author(s) -
Jang ShengLyang,
Lin ChihYuan,
Juang MiinHorng
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.4009
Subject(s) - frequency divider , injection locking , range (aeronautics) , differential (mechanical device) , frequency multiplier , electronic engineering , computer science , optics , physics , materials science , power dividers and directional couplers , telecommunications , engineering , bandwidth (computing) , composite material , thermodynamics , laser
A new circuit technique is proposed to enhance the locking range of divide‐by‐3 injection‐locked frequency dividers (ILFDs) implemented using a standard 0.18 μm CMOS process. The ILFD uses a transformer feedback to increase the second harmonic and enhances the conversion efficiency of injection metal–oxide semiconductor field‐effect transistor mixers. The ILFD core consumes 10.8 mW power at the supply voltage of 0.9 V and with a circuit core current of 12 mA. At the incident power of 0 dBm, the measured locking range is 4.2 GHz (37.17%), from the incident frequency 9.2–13.4 GHz.