Wide-Locking Range Divide-by-3 Injection-Locked Frequency Divider Through Enhanced 2nd Harmonic

Conventional harmonic mixer divide-by-3 ILFD has limited locking range. This letter shows a wide locking range ÷3 ILFD designed with the enhanced 2nd harmonic technique. The proposed ILFD is based on a cross-coupled voltage-controlled oscillator (VCO) and was implemented in the TSMC 0.18μm 1P6M CMOS...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 26; no. 7; pp. 537 - 539
Main Authors Jang, Sheng-Lyang, Kung, Tsui-Chun, Hsue, Ching-Wen
Format Journal Article
LanguageEnglish
Published IEEE 01.07.2016
Subjects
Bias
CMOS
Divide-by-3
Frequency measurement
Harmonic analysis
Harmonics
Inductors
injection-locked frequency divider
LC resonator
Locking
locking range
Microwaves
Mixers
Phase noise
Power consumption
Resonant frequency
second harmonic
Voltage controlled oscillators
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Summary:Conventional harmonic mixer divide-by-3 ILFD has limited locking range. This letter shows a wide locking range ÷3 ILFD designed with the enhanced 2nd harmonic technique. The proposed ILFD is based on a cross-coupled voltage-controlled oscillator (VCO) and was implemented in the TSMC 0.18μm 1P6M CMOS process. At the drain-source bias V DD of 0.8 V and at the incident power of 0 dBm, the locking range is 4 GHz (50%), from the incident frequency 6 GHz to 10 GHz. The core power consumption is 7.72 mW and the die area is 0.939 × 0.885mm 2 .
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content type line 23
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2016.2574835