A Fully Differential Low-Power Divide-by-8 Injection-Locked Frequency Divider Up to 18 GHz

A low power divide-by-8 injection-locked frequency divider is presented. The frequency divider consists of four current-mode logic (CML) D-latches connected in the form of a four-stage ring with the differential input signal injected into the clock terminals of the latches. The output signals can be...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2007-03, Vol.42 (3), p.583-591
Main Authors: Shanfeng Cheng, Haitao Tong, Silva-Martinez, J., Karsilayan, A.I.
Format: Article
Language:English
Subjects:
Applied sciences
Bandwidth
Batteries
Circuit properties
Circuits
Clocks
CMOS
CMOS logic circuits
CMOS technology
Consumption
Design. Technologies. Operation analysis. Testing
Divide by eight
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Frequency conversion
Frequency dividers
injection-locked frequency divider
Integrated circuits
Latches
Locking
Logic design
low-power frequency divider
Mobile communication
Oscillators, resonators, synthetizers
Power dissipation
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal convertors
Terminals
Voltage-controlled oscillators
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Summary:A low power divide-by-8 injection-locked frequency divider is presented. The frequency divider consists of four current-mode logic (CML) D-latches connected in the form of a four-stage ring with the differential input signal injected into the clock terminals of the latches. The output signals can be taken from the data terminals of any of the four latches. The proposed frequency divider has higher operating frequency and lower power dissipation compared with conventional static frequency dividers. Compared with existing injection-locked frequency dividers, the proposed fully differential frequency divider presents wider locking range with the center frequency independent of injection amplitude. The frequency divider is implemented in TSMC 0.18 mum CMOS technology. It consumes around 3.6 mW power with 1.8 V supply. The operating frequency can be tuned from 4 GHz to 18 GHz. The ratio of the locking range over the center frequency is up to 50% depending on the operating frequency and biasing conditions.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2006.891448