A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution

I Bashir; Bogdan Staszewski; Poras T. Balsara

doi:10.1109/JSSC.2016.2539342

A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution

I Bashir, Bogdan Staszewski, Poras T. Balsara

Research output: Contribution to journal › Article › Scientific › peer-review

13 Citations (Scopus)

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.

Original language	English
Article number	7452405
Pages (from-to)	1347-1360
Number of pages	14
Journal	IEEE Journal of Solid State Circuits
Volume	51
Issue number	6
DOIs	https://doi.org/10.1109/JSSC.2016.2539342
Publication status	Published - 13 Apr 2016
Externally published	Yes

Keywords

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

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title = "A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution",

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.",

keywords = "All-digital PLL (ADPLL), digital phase rotator (DPR), digital-to-frequency converter (DFC), digitally controlled delay (DCD), digitally controlled oscillator (DCO), Multi-stage noise Sigma;Delta; (MASH)",

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AU - Bashir, I

AU - Staszewski, Bogdan

AU - Balsara, Poras T.

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Y1 - 2016/4/13

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AB - 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.

KW - All-digital PLL (ADPLL)

KW - digital phase rotator (DPR)

KW - digital-to-frequency converter (DFC)

KW - digitally controlled delay (DCD)

KW - digitally controlled oscillator (DCO)

KW - Multi-stage noise Sigma;Delta; (MASH)

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JO - IEEE Journal of Solid State Circuits

JF - IEEE Journal of Solid State Circuits

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A Digitally Controlled Injection-Locked Oscillator with Fine Frequency Resolution

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Keywords

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