A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution

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A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution

Journal Article (2016)

Author(s)

I Bashir (University of Texas at Dallas, Cypress Semiconductor Corp.)

Bogdan Staszewski (University College Dublin)

Poras T. Balsara (University of Texas at Dallas)

Research Group

Electronics

DOI related publication

https://doi.org/10.1109/JSSC.2016.2539342

Digitally controlled oscillator (DCO) All-digital PLL (ADPLL) Digital phase rotator (DPR) Digital-to-frequency converter (DFC) Digitally controlled delay (DCD) Multi-stage noise Sigma;Delta; (MASH)

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https://resolver.tudelft.nl/uuid:e702cc28-7615-4701-b71a-efcfba9b0940

More Info

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Publication Year

2016

Language

English

Research Group

Electronics

Issue number

6

Volume number

51

Pages (from-to)

1347-1360

Abstract

We propose a digitally controlled injection-locked RF oscillator with an auxiliary loop as an alternative to the conventional capacitive fine-tuning of an LC-tank. The oscillator is injection locked to a time-delayed version of its resonating voltage and its frequency is modulated by manipulating the phase and amplitude of injected current. The injection strength can be programmed for the DCO step size to be as fine as 9 kHz at 4 GHz. Alternatively, with large injection strength, the tuning range can reach up to 200 MHz. The proposed oscillator is experimentally verified in TSMC 40 nm digital CMOS.

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