Accurate RFI prediction of 3D non-planar connector with half magnetic dipole pattern

Zhang, Ling; Huang, Qiaolei; Su, Xiangrui; Pai, Deepak; Rajagopalan, Jagan; Gaikwad, Amit M.; Hwang, Chulsoon; Fan, Jun

doi:10.23919/emcsapporo/apemc44270.2019.8976328

Cited by 5 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In (1), ω is the angular frequency, µ is the permeability of the free space, and k is the wavenumber. Note that the source coordinates are denoted by prime.…”

Section: Formulating the Problemmentioning

confidence: 99%

“…Thus, dividing the source plane into RWG base elements is equivalent to estimating the source by elementary electric dipoles that are more advantageous to use than simple finite dipoles. Following [13], the final equation, obtained after discretizing the integral equation in (1) and considering the interaction of n observation points and m source points, is expressed as:…”

Section: Formulating the Problemmentioning

confidence: 99%

“…The HDMI connector is modeled by a loop antenna parallel to the board plane [1]. The geometrical dimensions of the loop antenna are illustrated in the figure . The constructed electric fields at z = 15 mm plane using the simulated fields at z = 10 mm plane are shown in Fig.…”

Section: B Pcb With Wi-fi Antenna Affected By Hdmi Connector Noise An...mentioning

confidence: 99%

“…The associate editor coordinating the review of this manuscript and approving it for publication was Wei Wang . circuits (PMIC), and high-definition multimedia interface (HDMI) connectors [1], [2], [3].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Inverse MoM Approach to Near-Field Prediction and RFI Estimation in Electronic Devices With Multiple Radiating Elements

2023

View full text Add to dashboard Cite

An inverse method of moments (MoM) approach is developed to estimate the equivalent electric/magnetic current sources to predict radio frequency interference (RFI) in electronic devices. The proposed method is designed to reconstruct the noise sources in electronic devices containing multiple radiating elements by using a finite metal object carrying electric surface currents. The surface current elements are further applied to calculate the electromagnetic fields on arbitrary observation planes near the device under test (DUT). The method is validated through numerical simulation examples, including electrictype CPU noise, magnetic-type non-planar HDMI connector noise, printed circuit board (PCB) with Wi-Fi and PIFA antennas, and heat sink embedded in the DUT. The results confirm less than 0.4 dB difference in the predicted pattern at the antenna operating frequency when a triangular segmentation is applied in the vicinity of the noise source area, and the equivalent surface current is calculated at the edges of the Rao-Wilton-Glisson (RWG) meshes. The proposed method is a promising 'source reconstruction' candidate for predicting the near-field radiation characteristics of electronic devices with multiple peaks and nulls in the near-field radiation pattern. The method helps estimate the level of RFI by summing up the contributions of all the dipoles of the equivalent noise source derived by solving forward and inverse problems. The RFI results based on the inverse MoM approach are validated by comparing them with those obtained from CST simulation, and good agreement is achieved between the two.

show abstract

“…In (1), ω is the angular frequency, µ is the permeability of the free space, and k is the wavenumber. Note that the source coordinates are denoted by prime.…”

Section: Formulating the Problemmentioning

confidence: 99%

Section: Formulating the Problemmentioning

confidence: 99%

Section: B Pcb With Wi-fi Antenna Affected By Hdmi Connector Noise An...mentioning

confidence: 99%