Open AccessLow‐power transformer‐based current‐reuse injection‐locked frequency divider
Author(s) -
Ha KeumWon,
Sung EunTaek,
Baek Donghyun
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.2014.4052
Subject(s) - frequency divider , current divider , electrical engineering , wilkinson power divider , transformer , current transformer , electronic engineering , materials science , computer science , voltage , power dividers and directional couplers , engineering
A novel low‐power injection‐locked frequency divider (ILFD) is proposed, in which a complementary G m ‐boosted Colpitts oscillator core is employed to improve negative transconductance ( G m ) and the current‐reuse technique using a single transformer is applied to reduce the power consumption. The proposed ILFD exhibits a self‐resonant frequency of 4.93 GHz with a maximum locking range of 870 MHz at 0 dBm of input power. The phase noises of the input and output signals are −128.54 and −134.53 dBc/Hz, respectively. The ILFD consumes 1.37 and 2.5 mW at 1.15 and 1.3 V, respectively. The chip area is 715.5 × 468 μm 2 in a 0.13 μm CMOS process. To the authors’ knowledge, this is the first demonstration of the current‐reuse ILFD.