An experimental investigation of four-port IC-Stripline

Mandic, Tvrtko; Gillon, Renaud; Barić, Adrijan

doi:10.1109/emccompo.2017.7998111

Cited by 1 publication

(4 citation statements)

References 3 publications

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“…The ringing in the data measured by the TEM cell and the hybrid coupler, which is the consequence of the impedance mismatch between them, can be observed. Similar ringing can be observed in the measurements presented in [14], [15]. The maximum absolute value of the error for the measurements of the coupling which corresponds to the electric dipole moment is 5.9 dB, while that which corresponds to the magnetic dipole moment is 8.5 dB.…”

Section: A Measurements Of a Small Loopsupporting

confidence: 84%

“…The equations ( 14) and (15) show that the input impedances of the ports Σ and ∆ of the hybrid coupler when the TEM cell is connected to the ports 0 • and 180 • are frequency dependent, i.e. the TEM cell and the hybrid coupler are mismatched, even if all elements of the measurement setup are ideal.…”

Section: Impedance Mismatchmentioning

confidence: 99%

“…Only six measurements are needed to extract a consistent set of three orthogonal electric and three orthogonal magnetic dipole moments. The measurement setup based on a TEM cell and a hybrid coupler has been used recently in [9] to extract the radiation model of an integrated circuit, in [12] to characterize a synchronous buck converter, in [13] to estimate the maximum radiation from printed circuit boards (PCBs) with cables due to the magnetic field coupling, in [14] to characterize microstrip traces and a square patch, and in [15] to characterize a microstrip trace. However, none of these papers deal with the mismatch between the TEM cell and the hybrid coupler.…”

Section: Introductionmentioning

confidence: 99%

“…While it may be difficult to identify the impact of the mismatch in the measurements of complex unintentional radiators as their radiation characteristics are unknown, the impact can be seen in the measurements of structures with the known radiation characteristics. Such measurements are presented in [14], [15] in which the impact of the mismatch is seen as the ringing of the measured coupled voltage.…”

Section: Introductionmentioning

confidence: 99%

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Improved Estimation of Radiated Fields of Unintentional Radiators by Correction of the Impedance Mismatch Between a Transverse Electromagnetic Cell and a Hybrid Coupler

Blecic

Stimac

Gillon

et al. 2018

IEEE Trans. Electromagn. Compat.

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Radiated fields of unintentional radiators can be estimated from the measurements performed by a transverse electromagnetic cell. A hybrid coupler connected to the outputs of the transverse electromagnetic cell separates the electric and magnetic coupling, which allows to calculate the generated far-field radiation consistently. However, the transverse electro-magnetic cell and the hybrid coupler are mismatched which introduces an error in the measured results. The error of up to 8.5 dB is obtained in the measurements of the small loop. The impedance mismatch is dominantly a consequence of the phase shift which is related to the propagation of the signal through the measurement setup and which is present even if all elements of the measurement setup are ideal. The methodology for correcting the measured results is proposed and it is validated on the measurements of the small loop. The methodology is applied to the measurements of two synchronous buck converters and their radiated fields are estimated.

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Section: A Measurements Of a Small Loopsupporting

confidence: 84%

Section: Impedance Mismatchmentioning

confidence: 99%