OATS emission data compared with free space emission data

Leferink, Frank; Groot-Boerle, D.J.; Puylaert, B.R.M.

doi:10.1109/isemc.1995.523575

Cited by 16 publications

(3 citation statements)

References 44 publications

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“…In the literature, many research activities were also addressed for predicting the emissions of an EUT located in an open area test site (OATS) from measurement done in other envi- ronments. In addition to the correlation with free space measurement [10], typically reproducible in a fully anechoic chamber, these activities also aim at formulating a set of equivalent sources able to replace the EUT in computing its radiation.…”

Section: Introductionmentioning

confidence: 99%

A general method for radiated emission prediction in a multiple monopole source stirred reverberation chamber

Leo

Cerri

Russo

et al. 2021

IET Science Measure & Tech

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This paper presents a general and quasi-analytical method aimed at reconstructing the electric field radiated by equipment under test (EUT), in free space through the knowledge of the values of the electric field sampled on the walls of a rectangular metallic enclosure. The algorithm is based on a set of equivalent magnetic and electric currents, regularly placed in a sub volume of the chamber, whose values are determined to reconstruct the electric field due to the EUT on the samples. Results show that the method is general because it can be applied to a wide set of EUTs, but it is also flexible because it is able to exploit some a priori knowledge of the source to improve its accuracy and efficiency.

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Section: Introductionmentioning

confidence: 99%

A general method for radiated emission prediction in a multiple monopole source stirred reverberation chamber

Leo

Cerri

Russo

et al. 2021

IET Science Measure & Tech

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show abstract

“…For this reason, how to correlate the measurements performed in these sites to OATS conditions has been investigated. In this direction, [1][2][3][4][5][6][7] introduced a set of equivalent sources to replace the equipment under test (EUT) and to extrapolate the radiation in free space conditions from the measurements performed in these alternative sites.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Measurement Technique for Emissions in Reverberation Chamber Using the Equivalence Principle

et al. 2021

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This paper presents an optimization of a method to reconstruct the radiated emissions of an equipment under test by the measurement of the electric field samples collected on the walls of a reverberation chamber. This means that only the orthogonal component of the electric field is necessary to obtain the radiative behavior of the device in free space conditions. The use of the equivalence principle allows one to reduce the number of equivalent sources used to reconstruct the radiation of the device. In fact, in the previous version of the method, the sources are placed into the entirety of working volume of the reverberation chamber. In the current version of the method, only the surface surrounding the equipment under test is discretized. The analytical implementation of the method is proposed for a particular stirring action: the multiple monopole source stirring technique. This technique is based on an array of monopoles placed onto the walls of the cavity, and therefore no further hardware is needed for the reconstruction of the radiated emissions. The method is experimentally validated in a real scenario.

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“…The CISPR16 [6] EMC (Electro-Magnetic Compatibility) standard describes a height scan measurement for that purpose. Antenna gain or antenna factor calibration values for EMC antennas should not be confused with free space antenna gain: these values include the ground gain on the standard site, generally defined at 3 or 10 meters distance [7]. These figures deviate substantially from the free space antenna gain values.…”

Section: Introductionmentioning

confidence: 99%

Novel method to measure the gain of UHF directional antennas using distance scan

Witvliet

Maanen

Bentum

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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A novel antenna gain measurement method is described which uses power transfer values that are measured while varying the distance between two antennas (Distance Scan). It can be executed with simple means and is cost-effective. The Distance Scan method yields derived free space antenna gain values if a calibrated reference antenna is used and can be combined with the Three Antenna Method to obtain absolute antenna gain values. The method is demonstrated with the antenna gain measurement of three 12 element Yagi-Uda antennas and two 15 element Log-Periodic Dipole Antennas (LPDA's) on 8 frequencies. The measurement results of the LPDA's are compared with values obtained by external calibration, confirming the validity of this method.

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OATS emission data compared with free space emission data

Cited by 16 publications

References 44 publications

A general method for radiated emission prediction in a multiple monopole source stirred reverberation chamber

A general method for radiated emission prediction in a multiple monopole source stirred reverberation chamber

Optimization of the Measurement Technique for Emissions in Reverberation Chamber Using the Equivalence Principle

Novel method to measure the gain of UHF directional antennas using distance scan

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