Considerations on radiated emission measurements for a Laptop in a semi-anechoic chamber

Dina, Livia-Andreea; Nicolae, Petre-Marian; Smarandescu, Ionut Daniel; Voicu, Viorica

doi:10.1109/sielmen.2017.8123299

Cited by 2 publications

(4 citation statements)

References 8 publications

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“…The measurements were performed in a laboratory from a research institute outside of the university, in an accredited laboratory. The CISPR 22 Standard and the European norm EN 55022 mention the limits for REs [34].…”

Section: Considerations On Radiated Emissions For a Portable Compatib...mentioning

confidence: 99%

“…The main setup used to measure the REs at 3 m in SAC is depicted in Figure 14 [34]. The main components used to measure the REs were: a R&S ESCI3 measuring receiver, a hybrid antenna (logarithm periodical) type HL 1000, an emission antenna type EMCO 2090, and a semi-anechoic chamber.…”

Section: (I) Test Procedures Of Radiated Emissionsmentioning

confidence: 99%

“…• Band width: 120 kHz; The main components used to measure the REs were: a R&S ESCI3 measuring receiver, a hybrid antenna (logarithm periodical) type HL 1000, an emission antenna type EMCO 2090, and a semi-anechoic chamber. The R&S ESCI3 measuring receiver is compliant with the latest version of CISPR 16-1-1 Standard [34].…”

Section: (Ii)mentioning

confidence: 99%

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Power Quality and Electromagnetic Compatibility Aspects at Personal Computers

Nicolae

2022

Energies

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In this article, issues related to electromagnetic compatibility and energy/power quality for a laptop are addressed. Power quality problems are outlined. Testing frameworks (developed by authors) are presented and discussed for a laptop when two different sampling frequencies are used: 80 kHz and 19.2 kHz. Waveforms corresponding to the voltage across the laptop’s terminals and current absorbed by it were acquired. Recordings and numerical processing, based on original software using Fast Fourier Transform, are discussed, and the analysis of waveforms in both cases is performed. Various power quality indices were calculated. Theoretical and practical aspects related to the determination of power quantities, power flows, and power factor are presented. Some conclusions concerning different ranges of frequencies are presented, along with some considerations for power quality problems. Tests for conducted emissions (single phase and neutral wire respectively) and for the radiated emissions (for horizontal and vertical polarizations) are presented. Comparisons to the emission standards were made. The immunity behavior for a laptop is discussed according to immunity standards. It is shown that new measures (e.g., active filters) are necessary for network protection when connecting a laptop to the network. Some considerations, based on the authors’ observations concerning new standards for power quality and electromagnetic compatibility, are outlined.

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Section: Considerations On Radiated Emissions For a Portable Compatib...mentioning

confidence: 99%

Section: (I) Test Procedures Of Radiated Emissionsmentioning

confidence: 99%

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Power Quality and Electromagnetic Compatibility Aspects at Personal Computers

Nicolae

2022

Energies

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“…Studies and Applications [44] Characterizing the reflection coefficient of RAM using time domain technique [45] Evaluation of AC using matrix pencil technique [46] Contributions of site for radiated emission measurement Uncertainties more than 1 GHz [47] Laptop emission [48] Effect of electrically large structures on the EMC compliance [49] Single probe anechoic chamber technique for MIMO OTA measurement [50] Radiation pattern measurement for modulated metasurface antenna [51] Radiation pattern measurement for wideband lowsidelobe short array antenna [52] Radiation pattern measurement for arbitrary phased array system [53] Testing the effectiveness of the shared tower scale model [54] Radiation pattern measurement for monopole antenna with the periodic patch director [55] Validation of connector emission measurement [56] Simulations of automotive EMC [57] Effect of table material on radiated immunity Test [58] Radiated emissions measurement from an automotive cluster…”

Section: Referencesmentioning

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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Considerations on radiated emission measurements for a Laptop in a semi-anechoic chamber

Cited by 2 publications

References 8 publications

Power Quality and Electromagnetic Compatibility Aspects at Personal Computers

Power Quality and Electromagnetic Compatibility Aspects at Personal Computers

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

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