Journal ArticleDOI
EMI-induced failures in crystal oscillators
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TLDR
In this paper, an electromagnetic interference (EMI) induced failure mode pertaining to crystal-based voltage-controlled oscillators (VCO) has been studied, where the failure consists of a transition to a frequency of oscillation that differs from the crystal's fundamental resonant frequency, when the circuit is temporarily exposed to continuous or pulsed radio-frequency electromagnetic fields.Abstract:
An electromagnetic interference (EMI) induced failure mode pertaining to crystal-based voltage-controlled oscillators (VCO) has been studied. The failure consists of a transition to a frequency of oscillation that differs from the crystal's fundamental resonant frequency, when the circuit is temporarily exposed to continuous or pulsed radio-frequency electromagnetic fields. The new state persists even after the EMI source is removed and leads to hang-up in digital systems. This mode transition has been observed experimentally. Its essential properties have been predicted theoretically and simulated numerically, using simplified oscillator models. The likelihood of observing such a failure in a noisy electromagnetic environment is assessed with respect to the radiated susceptibility levels given in MIL-STD-461B. >read more
Citations
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Journal ArticleDOI
The Electromagnetic Compatibility of Integrated Circuits—Past, Present, and Future
Mohamed Ramdani,Etienne Sicard,Alexandre Boyer,S. Ben Dhia,J.J. Whalen,Todd H. Hubing,M. Coenen,Osami Wada +7 more
TL;DR: This paper provides a nonexhaustive review of the research work conducted in the field of electromagnetic compatibility at the IC level over the past 40 years to build a tentative roadmap for the EMC of ICs until the year 2020, with a focus on measurement methods and modeling approaches.
Journal ArticleDOI
EMI Reduction via Spread Spectrum in DC/DC Converters: State of the Art, Optimization, and Tradeoffs
TL;DR: The most common and most efficient known spreading techniques are considered, looking for spreading parameters that ensure the highest EMI reduction and the lowest performance reduction in the circuit where the spreading is applied.
Journal ArticleDOI
Characterisation of electromagnetic susceptibility of integrated circuits using near-field scan
TL;DR: In this paper, a susceptibility characterisation test for integrated circuits using a miniature magnetic near-field probe is described, which is efficient up to a frequency of 6 GHz and maps immunity to radiated fields.
Journal ArticleDOI
Temperature-compensated capacitance–frequency converter with high resolution
Vojko Matko,Miro Milanovič +1 more
TL;DR: In this paper, a temperature-compensated capacitance-based frequency converter with a single quartz crystal oscillating in the switching oscillating circuit was proposed, which reduced the temperature influence of AT-cut crystal frequency change in the temperature range between 0 and 50°C.
Journal ArticleDOI
High Resolution Switching Mode Inductance-to-Frequency Converter with Temperature Compensation
Vojko Matko,Miro Milanovič +1 more
TL;DR: Through high temperature compensation improvement of the quartz crystal characteristics, this switching method theoretically enables a 2 pH resolution and improves frequency sensitivity in inductance measurements.
References
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A multiradius, reciprocal implementation of the thin-wire moment method
M.A. Tilston,Keith G. Balmain +1 more
TL;DR: In this article, an extension of the uniradius bridge-current reformulation (see ibid., vol.37, p.1224-34, Oct. 1989) is presented.
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On the suppression of asymmetric artifacts arising in an implementation of the thin-wire method of moments
M.A. Tilston,Keith G. Balmain +1 more
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Journal ArticleDOI
Conditions for start-up in crystal oscillators
M.A. Unkrich,Robert G. Meyer +1 more
TL;DR: In this article, the influence of parasitic elements on crystal oscillator start-up is examined and both theoretical analysis and computer simulation are used to identify circuit parameters affecting oscillator performance and methods of ensuring reliable operation.
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