Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation

Vishnu Unnikrishnan; Okko Järvinen; K. Stadius; Marko Kosunen; Jussi Ryynänen

doi:10.1109/ISCAS45731.2020.9181057

Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation

Vishnu Unnikrishnan, Okko Järvinen, K. Stadius, Marko Kosunen, Jussi Ryynänen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

Abstract

A digital-friendly approach to implement injection-locked ring oscillators is proposed. We show that lock can be achieved by dynamically switching the delay of a delay element in a ring oscillator. A logic gate that generates the control signal for switching the delay, together with a one-bit controlled oscillator, inherently realizes a locking mechanism. Measurement results from a prototype circuit fabricated with a 28 nm CMOS process demonstrate the feasibility of the concept. The circuit with a measured lock range of 2.4-3.7 GHz occupies an area of 0.00043 mm2 and consumes 0.18 mW power.

Original language	English
Title of host publication	2020 IEEE International Symposium on Circuits and Systems (ISCAS)
DOIs	https://doi.org/10.1109/ISCAS45731.2020.9181057
Publication status	Published - 2020
Externally published	Yes
Publication type	A4 Article in conference proceedings

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10.1109/ISCAS45731.2020.9181057

https://research.aalto.fi/en/publications/b1d4dac8-492a-4cd1-baf8-b07361df1ecf

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title = "Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation",

abstract = "A digital-friendly approach to implement injection-locked ring oscillators is proposed. We show that lock can be achieved by dynamically switching the delay of a delay element in a ring oscillator. A logic gate that generates the control signal for switching the delay, together with a one-bit controlled oscillator, inherently realizes a locking mechanism. Measurement results from a prototype circuit fabricated with a 28 nm CMOS process demonstrate the feasibility of the concept. The circuit with a measured lock range of 2.4-3.7 GHz occupies an area of 0.00043 mm2 and consumes 0.18 mW power. ",

author = "Vishnu Unnikrishnan and Okko J{\"a}rvinen and K. Stadius and Marko Kosunen and Jussi Ryyn{\"a}nen",

year = "2020",

doi = "10.1109/ISCAS45731.2020.9181057",

language = "English",

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T1 - Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation

AU - Unnikrishnan, Vishnu

AU - Järvinen, Okko

AU - Stadius, K.

AU - Kosunen, Marko

AU - Ryynänen, Jussi

PY - 2020

Y1 - 2020

N2 - A digital-friendly approach to implement injection-locked ring oscillators is proposed. We show that lock can be achieved by dynamically switching the delay of a delay element in a ring oscillator. A logic gate that generates the control signal for switching the delay, together with a one-bit controlled oscillator, inherently realizes a locking mechanism. Measurement results from a prototype circuit fabricated with a 28 nm CMOS process demonstrate the feasibility of the concept. The circuit with a measured lock range of 2.4-3.7 GHz occupies an area of 0.00043 mm2 and consumes 0.18 mW power.

AB - A digital-friendly approach to implement injection-locked ring oscillators is proposed. We show that lock can be achieved by dynamically switching the delay of a delay element in a ring oscillator. A logic gate that generates the control signal for switching the delay, together with a one-bit controlled oscillator, inherently realizes a locking mechanism. Measurement results from a prototype circuit fabricated with a 28 nm CMOS process demonstrate the feasibility of the concept. The circuit with a measured lock range of 2.4-3.7 GHz occupies an area of 0.00043 mm2 and consumes 0.18 mW power.

U2 - 10.1109/ISCAS45731.2020.9181057

DO - 10.1109/ISCAS45731.2020.9181057

M3 - Conference contribution

SN - 978-1-7281-3320-1

BT - 2020 IEEE International Symposium on Circuits and Systems (ISCAS)

ER -

Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation

Abstract

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