Open AccessTriple‐resonance RLC‐tank divide‐by‐2 injection‐locked frequency divider
Author(s) -
Jang S.L.,
Cheng W.C.,
Hsue C.W.,
Juang M.H.
Publication year - 2016
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.2015.4340
Subject(s) - frequency divider , inductor , capacitor , cmos , resonator , resistor , rlc circuit , electrical engineering , lc circuit , resonance (particle physics) , microwave , materials science , power (physics) , optoelectronics , engineering , physics , telecommunications , voltage , atomic physics , quantum mechanics
Conventional CMOS injection‐locked frequency dividers (ILFDs) were often designed with a single‐resonance LC resonator and they have a single‐band locking range. Wide‐locking range in these ILFDs was obtained at the cost of lower output power. A triple‐resonance (TR) resistor (R), inductor (L) and capacitor (C)‐tank ILFD is presented to design a wide‐locking range CMOS divide‐by‐2 circuit, which is based on a cross‐coupled n‐core MOS pair. The TR ILFD has three overlapped locking ranges seen as one‐band locking range at high microwave injection power and it has large output power. At the core power consumption of 6.76 mW and at the microwave input power of 0 dBm, the divide‐by‐2 TR ILFD achieve a maximum locking range of 5.77 GHz (105.2%) from 2.6 to 8.37 GHz.