Radiated emissions conversion from anechoic environment to OATS using a hybrid genetic algorithm-gradient method

Regue, J.-R.; Ribó, M.; Garrell, Josep M.

doi:10.1109/isemc.2001.950652

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Table 2 presents several studies and applications of OATS. Measurements of shielding effectiveness of connectors and coaxial cable [22] Testing for high intensity radiated field of unmanned aerial vehicle's [23] EM Emission from handheld devices [20] Cancellation of interference for emission measurement in OATS [24] Measurements of high level radiated susceptibility at the OATS [25] Modeling and correlation of radiated emissions generated at an OATS [26] Scattering characteristic analysis of OATS ground plane [27] Conversion of radiated emissions using genetic algorithm from anechoic chamber to OATS [17] Influences of table material at OATS on the strength of radiated field measurement [28] The diode loaded standard antenna as receiving in OATS [29] Ultra-broadband calculable dipole antennas verification & applications [30] Measuring radiated EMI using a statistical based model in OATS environment [31] Technique to compute OATS uncertainty [32] Model of GTD for OATS with a finite metallic plane…”

Section: Oats Is a Measurement Technique Of Em Emissions In Anmentioning

confidence: 99%

A review of measurement of electromagnetic emission in electronic product: Techniques and challenges

Yuwono

Baharuddin

Misran

et al. 2022

CST

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Nowadays, electronic products are being used extensively in many fields and applications. The dense population of electronic devices in human life has become a challenge for microwave engineers to ensure that their products can meet the Electromagnetic Compatibility (EMC) standards. Complex electronic products with smaller sizes and denser components will be a challenge for compliance with EMC standards. In addition, the occurrence of non-stationary emission at certain operating modes becomes a challenge for analysis. Error in analyzing EM emissions will make the products unable to meet the requirements of EMC standards; hence, they will be prohibited to be marketed. Currently, there are two methods of emission analysis, i.e. by measurement and modeling or computation. There are some problems, however, in the analysis of EM emissions regarding the area of test, complexity, DUT positioning error, installation cost, and time consumption. In this paper, the analysis techniques for EM emissions including Open Area Test Site (OATS), Anechoic chamber, Transverse Electromagnetics TEM Cell, Compact Antenna Test Range (CATR) and near field scanning are reviewed comprehensively. This survey covered EMC standards, principles of EM emission measurement techniques, advantages and disadvantages of EM emission measurement techniques, studies and applications of each technique, recommendations for which technique to be used, and challenges for future research in EM emission measurement. The final section of this paper discusses the challenges for near-field measurements related to the non-stationary emissions phenomenon. This papers also presents the challenges of how to detect and characterize them.

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Section: Oats Is a Measurement Technique Of Em Emissions In Anmentioning

confidence: 99%

A review of measurement of electromagnetic emission in electronic product: Techniques and challenges

Yuwono

Baharuddin

Misran

et al. 2022

CST

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“…This back-to-back hybridization scheme differs from memetic approaches [14] that apply a local search to multiple individuals in the population in between generations of a GA. Similar tandem hybridization of global and local search algorithms have been shown to be successful in other difficult optimization problems [15], [20], [23]. For the local search algorithm, we selected a deterministic pattern search (PS) algorithm [10].…”

Section: Introductionmentioning

confidence: 99%

A hybrid genetic algorithm with pattern search for finding heavy atoms in protein crystals

Payne

Eppstein

2005

Proceedings of the 7th Annual Conference on Genetic and Evolutionary Computation

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One approach for determining the molecular structure of proteins is a technique called iso-morphous replacement, in which crystallographers dope protein crystals with heavy atoms, such as mercury or platinum. By comparing measured amplitudes of diffracted x-rays through protein crystals with and without the heavy atoms, the locations of the heavy atoms can be estimated. Once the locations of the heavy atoms are known, the phases of the diffracted x-rays through the protein crystal can be estimated, which in turn enables the structure of the protein to be estimated. Unfortunately, the key step in this process is the estimation of the locations of the heavy atoms, and this is a multi-modal, non-linear inverse problem. We report results of a pilot study that show that a 2-stage hybrid algorithm, using a stochastic genetic algorithm for stage 1 followed by a deterministic pattern search algorithm for stage 2, can successfully locate up to 5 heavy atoms in computer simulated crystals using noise free data. We conclude that the method may be a viable approach for finding heavy atoms in protein crystals, and suggest ways in which the approach can be scaled up to larger problems.

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Modeling of radiating equipment by distributed dipoles using metaheuristic methods

Regue

Ribó

Gomila

et al.

2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.

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Radiated emissions conversion from anechoic environment to OATS using a hybrid genetic algorithm-gradient method

Cited by 3 publications

References 5 publications

A review of measurement of electromagnetic emission in electronic product: Techniques and challenges

A review of measurement of electromagnetic emission in electronic product: Techniques and challenges

A hybrid genetic algorithm with pattern search for finding heavy atoms in protein crystals

Modeling of radiating equipment by distributed dipoles using metaheuristic methods

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