Fast sampling DCO for 2.4 GHz wake-up receiver

This Letter reports an active inductor digitally controlled oscillator (DCO) for fast switchable low power wireless wake-up receivers. The LO output is held low when the enable pin is high and it oscillates when the enable pin goes low. The MOS transistor is used to turn on the oscillator for 200 ns...

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Bibliographic Details
Published in:Electronics letters 2016-03, Vol.52 (5), p.374-376
Main Authors: Jain, S, Ellinger, F, Tchamov, N.T
Format: Article
Language:English
Subjects:
active inductor DCO
active inductor digitally‐controlled oscillator
capacitor bank
Capacitor banks
Circuits
die area
Electronics
fast sampling DCO
fast switchable low‐power wireless wake‐up receivers
frequency 2.4 GHz
Inductors
LC oscillator
LO output
Microwave technology
MOS devices
MOS transistor
MOSFET
Oscillators
radio receivers
Receivers
Sampling
symmetric differential‐pair active inductor topology
time 200 ns
UHF oscillators
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Summary:This Letter reports an active inductor digitally controlled oscillator (DCO) for fast switchable low power wireless wake-up receivers. The LO output is held low when the enable pin is high and it oscillates when the enable pin goes low. The MOS transistor is used to turn on the oscillator for 200 ns (Ton) to mitigate the requirement of wake-up receivers (Tcycle = 1 µs). To save the die area, a symmetric differential-pair active inductor topology with 4-bit capacitor bank is proposed. The implemented circuit has one tenth of the chip size of LC oscillator.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2015.3884