Journal ArticleDOI
Analysis and Design of Wideband Injection-Locked Ring Oscillators With Multiple-Input Injection
Jun-Chau Chien,Liang-Hung Lu +1 more
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TLDR
Compared with the case of the single-ended injection, the locking range of the frequency divider almost doubles when multiple-input injection with optimum phases is utilized and the experimental results exhibit good agreement with the theoretical derivation and the circuit simulation.Abstract:
In this paper, the locking range of the injection-locked ring oscillators is investigated. To improve the injection efficiency and the locking range for superharmonic frequency division, a multiple-injection technique is proposed. Using a 0.18-mum CMOS process, a wideband frequency divider based on a three-stage ring oscillator is implemented for demonstration. With a tunable free-running frequency, the fabricated circuit provides 2:1 and 4:1 frequency division with a single-ended input signal ranging from 13 to 25 and 30 to 45 GHz, respectively. Compared with the case of the single-ended injection, the locking range of the frequency divider almost doubles when multiple-input injection with optimum phases is utilized. The experimental results exhibit good agreement with the theoretical derivation and the circuit simulation.read more
Citations
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Journal ArticleDOI
Multi-Phase Injection Widens Lock Range of Ring-Oscillator-Based Frequency Dividers
TL;DR: This work uses a generalized Adler's equation for large injections to analyze the operation of injection-locked ring oscillators and derive expressions for the input lock range, and discovers that injection in the correct progressive phases greatly widens the lock range.
Journal ArticleDOI
A Low-Power Low-Noise mm-Wave Subsampling PLL Using Dual-Step-Mixing ILFD and Tail-Coupling Quadrature Injection-Locked Oscillator for IEEE 802.11ad
Teerachot Siriburanon,Satoshi Kondo,Makihiko Katsuragi,Hanli Liu,Kento Kimura,Wei Deng,Kenichi Okada,Akira Matsuzawa +7 more
TL;DR: This paper presents a low-power low-noise 60 GHz frequency synthesizer using a 20 GHz subsampling phase-locked loop (SS-PLL) and a 60 GHz tail-coupling quadrature injection-locked oscillator (QILO) which results in a lower in-band phase noise and out-of- band phase noise, respectively.
Journal ArticleDOI
A Silicon-Based 0.3 THz Frequency Synthesizer With Wide Locking Range
TL;DR: A 300 GHz frequency synthesizer incorporating a triple-push VCO with Colpitts-based active varactor (CAV) and a divider with three-phase injection is introduced, which provides frequency tunability, enhances harmonic power, and buffers/injects the VCO fundamental signal from/to the divider.
Journal ArticleDOI
Modeling Oscillator Injection Locking Using the Phase Domain Response
TL;DR: A simulation-based model that can be applied to any oscillator topology under any strength of injected signal and accurately predict the behavior of ILOs with asymmetric lock ranges or those using injection into multiple locations is presented.
Journal ArticleDOI
A 0.06 mm $^{2}$ 11 mW Local Oscillator for the GSM Standard in 65 nm CMOS
TL;DR: A SMGSM-compliant local oscillator consuming a tiny die area and drawing 9 mA from a 1.2 V supply has been designed in a 65 nm CMOS process using thin-oxide devices only to provide a two octave locking range with limited area and power consumption.
References
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Journal ArticleDOI
A Study of Locking Phenomena in Oscillators
TL;DR: In this paper, a differential equation is derived which gives the oscillator phase as a function of time, and with the aid of this equation, the transient process of "pull-in" as well as the production of distorted beat note are described in detail.
Journal ArticleDOI
A study of injection locking and pulling in oscillators
TL;DR: In this paper, an identity obtained from phase and envelope equations is used to express the requisite oscillator nonlinearity and interpret phase noise reduction, and the behavior of phase-locked oscillators under injection pulling is also formulated.
Journal ArticleDOI
A study of locking phenomena in oscillators
TL;DR: In this article, a differential equation is derived which gives the oscillator phase as a function of time, and with the aid of this equation, the transient process of "pull-in" as well as the production of distorted beat note are described in detail.
Journal ArticleDOI
A CMOS direct injection-locked oscillator topology as high-frequency low-power frequency divider
TL;DR: An injection-locked oscillator topology is presented, based on MOS switches directly coupled to the LC tank of well-known LC oscillators, which features wide locking ranges, a very low input capacitance, and highest frequency capability.
Journal ArticleDOI
A 40-GHz frequency divider in 0.18-/spl mu/m CMOS technology
Jri Lee,Behzad Razavi +1 more
TL;DR: In this article, a regenerative divide topology is introduced that employs resonance techniques by means of on-chip spiral inductors to tune out the device capacitances, achieving a frequency range of 2.3 GHz at 40 GHz while consuming 31 mW from a 2.5-V supply.