Noise Analysis of Phase-Demodulating Receivers Employing Super-Regenerative Amplification

Lee, Dhon-Gue; Mercier, Patrick P.

doi:10.1109/tmtt.2017.2686860

Cited by 13 publications

(9 citation statements)

References 18 publications

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“…Being time-varying, an exact analysis of the noise generated in the SRO is far from trivial and strongly dependent on its topology. It has been shown, however, that sufficiently accurate results can be obtained considering stationary noise sources with the values obtained at the zero crossing of ζ(t) [45].…”

Section: Noisementioning

confidence: 99%

“…A Gaussian variation of t b translates into a lognormal amplitude distribution, which may be approximated again by a Gaussian distribution if the jitter is small compared to the nominal value of t b [4]. However, under normal conditions, which include reasonable jitter specifications, this effect has been found negligible in comparison with other noise sources [4], [45].…”

Section: Noisementioning

confidence: 99%

See 1 more Smart Citation

Superregeneration Revisited: From Principles to Current Applications

et al. 2020

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Section: Noisementioning

confidence: 99%

Section: Noisementioning

confidence: 99%

Superregeneration Revisited: From Principles to Current Applications

et al. 2020

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“…Using (18), the stability of the dc solution can be determined replacing the quench signal with a time-constant parameter GS V   and leading the system to linear regime, by reducing the amplitude of the input source G in . Setting the fundamental frequency of system (15) to the frequency of the small-signal source, the forced solution will be time constant in the envelope-domain system (18) and given by F x , where the subscript F indicates forced operation. According to the averaging theorem [28], the stability properties of the smallsignal solution F…”

Section: Application To a Fet-based Sromentioning

confidence: 99%

“…Most of the previous works [14], [15] on SRO noise analysis consider a simplified Van der Pol model of the oscillator circuit and focus on the S/N calculation in linear regime. The aim of this work is to present a generic noise analysis of SROs in both linear and nonlinear modes.…”

Section: Introductionmentioning

confidence: 99%

Noise Analysis of Super-Regenerative Oscillators in Linear and Nonlinear Modes

Sancho

Hernandez

Suárez

2019

IEEE Trans. Microwave Theory Techn.

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A rigorous analysis of noise effects in super regenerative oscillators (SRO), operating in both linear and nonlinear mode, is presented. For operation in linear mode, two different analysis methods are presented. One is based on the calculation of linear-time variant (LTV) transfer function with respect to the input signal and the noise sources. The second method is based on a compact semi-analytical formulation of the pulsed oscillator under the effect of the quench signal. The compact formulation also enables the analysis of the SRO in nonlinear mode. It constitutes a fully new mathematical description of SROs, with general applicability, as it is not restricted to a particular oscillator topology. It relies on a numerical nonlinear black-box model of the standalone freerunning oscillator, extracted from harmonic-balance simulations. This model is introduced into an envelope-domain formulation of the SRO at the fundamental frequency. Both the method based on LTV transfer functions and the semi-analytical formulation take into account the cyclostationary nature of the SRO response to the noise sources. In nonlinear mode, the variances of the amplitude and phase are calculated linearizing the formulation about the pulsed steady-state solution. The particular time variation of the phase variance is explained in detail, and related with the onset and extinction of the oscillation in the presence of an RF input signal. The new analysis methods have been validated with both independent circuit-level simulations and measurements.

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“…Several previous works [4]- [5] have presented a calculation of the signal-to-noise ratio of SROs in linear mode. However, most of them consider a simplified second-order system, usually described in terms of a cubic nonlinearity and a resonator.…”

Section: Introductionmentioning

confidence: 99%

Cyclostationary noise analysis of superregenerative oscillators

Hernandez

Sancho

Suárez

2019

2019 IEEE MTT-S International Microwave Symposium (IMS)

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A rigorous analysis of noise effects in super regenerative oscillators (SRO) operating in linear mode is presented. The analysis takes into account the cyclostationary nature of the SRO response to the noise sources, due to the effect of the quench signal. It is based on the determination of an envelope-domain linear-time-variant (LTV) transfer function with respect to each noise source, plus the application of a detailed stochastic analysis of the SRO output. Initially, the autocorrelation of the output signal is calculated, which varies at two different time scales, and is periodic with respect to the quench signal, so it can be expressed in terms of the frequency-dependent harmonic components of the LTV transfer functions. This enables the calculation of the output spectral density, depending on these harmonic components. Once the spectral density is known, the signal-to-noise ratio can be obtained in a straightforward manner. The analysis method has been validated with both independent circuit-level simulations and measurements.

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Noise Analysis of Phase-Demodulating Receivers Employing Super-Regenerative Amplification

Cited by 13 publications

References 18 publications

Superregeneration Revisited: From Principles to Current Applications

Superregeneration Revisited: From Principles to Current Applications

Noise Analysis of Super-Regenerative Oscillators in Linear and Nonlinear Modes

Cyclostationary noise analysis of superregenerative oscillators

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