A fully synthesized injection locked ring oscillator based on a pulse injection locking technique

Li, Mingze; Mason, R.; Abou-El-Kheir, Nahla T.

doi:10.1109/apmc.2017.8251691

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…Improving oscillators phase noise performance requires the prevention of output phase error accumulation and the reduction of oscillator timing jitter. This can be done through a large power surge [7][8][9] or the employment of the injection locking technique [2][3][4][5]. For the design of injection locked oscillators (ILOs), pulse injection [3,5] and edge-injection [2] regimes were utilized.…”

Section: Injection Lockingmentioning

confidence: 99%

“…Sub-harmonic injection resets the injection locked ring oscillators (ILROs) periodically and minimizes their root mean square (RMS) jitter [2,3]. This helps ILROs to have synthesizable architectures [2,4], which promotes ILROs for improved portability, scalability, and lesser cost of design and implementation [2]. ILROs can also achieve wide tuning and locking ranges of frequency.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, they suffer from periodical output signal disturbance and frequency shift from free-running oscillation frequency to n th harmonic of injected reference due to injection locking. This adds to the ILRO output spectrum spurs [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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A High FoM and Low Phase Noise Edge-Injection-Based Ring Oscillator in 350 nm CMOS for Sub-GHz ADPLL Applications

Yousef,

Alzahmi

2023

Electronics

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This paper presents an injection locked digitally controlled ring oscillator (IL-DCRO). To reduce jitter variations, minimize oscillator spurious signals, and eliminate periodical phase error, a double edge-injection (window injection) scheme with synchronized edge directions is proposed. A combinational edge generator is utilized to substitute the sequential edge generators for injection timing requirements relaxation. By biasing devices in deep triode, digitally controlled delay cells currents are adopted for frequency tuning. This helps reducing the devices flicker (1/f) noise and minimize the DCRO overall phase noise. At 1 MHz offset of frequency, the proposed oscillator has a measured phase noise of −125.95 dBc/Hz and −115.6 dBc/Hz at oscillation frequencies of 913.4 MHz and 432.6 MHz, respectively. Fabricated in 350 nm CMOS process, with a maximum power consumption of 3.3 mW, and oscillating at 913.4 MHz, this DCRO achieves a tuned oscillator figure of merit (FoM) of −197.35 dBc/Hz. The core area of this edge-injection-based DRCO is only 0.08 mm2.

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Section: Injection Lockingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A High FoM and Low Phase Noise Edge-Injection-Based Ring Oscillator in 350 nm CMOS for Sub-GHz ADPLL Applications

Yousef,

Alzahmi

2023

Electronics

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“…Since multiple input injection [31][32][33][34][35][36][37] requires additional phase control circuits and consumes a lot of power, single input injection with low power consumption is adopted for injection-locked RF clock harvester. In order to achieve a relatively wide locking range in low-power operation and to achieve a small chip area, a ring oscillator is adopted instead of an inductorcapacitor (LC) oscillator [38,39].…”

Section: Proposed Rf Clock Harvester Designmentioning

confidence: 99%

An Energy-Efficient UWB Transmitter with Wireless Injection Locking for RF Energy-Harvesting Sensors

Kim

Heo

Kwon

2021

Sensors

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An ultralow-power ultrawideband (UWB) transmitter with an energy-efficient injection-locked radio frequency (RF) clock harvester that generates a carrier from an RF signal is proposed for RF energy-harvesting Internet-of-Things (IoT) sensor applications. The energy-efficient RF clock harvester based on the injection-locked ring oscillator (ILRO) is proposed to achieve optimal locking range and minimum input sensitivity to obtain an injection-locked 450 MHz clock in ultralow-power operation. A current-starved inverter-based delay stage is adopted that allows delay adjustment by bias voltage to minimize dynamic current consumption while maintaining a constant delay regardless of changes in process, supply voltage, and temperature (PVT). To minimize static current consumption, a UWB transmitter based on a digital-based UWB pulse generator and a pulse-driven switching drive amplifier is proposed. The proposed injection-locked RF clock harvester achieves the best RF input sensitivity of −34 dBm at a power consumption of 2.03 μW, enabling energy-efficient clock harvesting from low RF input power. In ultralow-power operation, a 23.8% locking range is achieved at the RF injection power of –15 dBm to cope with frequency changes due to PVT variations. The proposed UWB transmitter with RF clock harvester achieves the lowest energy consumption per pulse with an average power consumption of 97.03 μW and an energy consumption of 19.41 pJ/pulse, enabling operation with the energy available in RF energy-harvesting applications.

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Design of low phase noise wide frequency range ring voltage controlled oscillator

Zhao,

Yang,

Wang

2023

2022 10th International Symposium on Next-Generation Electronics (ISNE)

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A fully synthesized injection locked ring oscillator based on a pulse injection locking technique

Cited by 4 publications

References 32 publications

A High FoM and Low Phase Noise Edge-Injection-Based Ring Oscillator in 350 nm CMOS for Sub-GHz ADPLL Applications

A High FoM and Low Phase Noise Edge-Injection-Based Ring Oscillator in 350 nm CMOS for Sub-GHz ADPLL Applications

An Energy-Efficient UWB Transmitter with Wireless Injection Locking for RF Energy-Harvesting Sensors

Design of low phase noise wide frequency range ring voltage controlled oscillator

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