Radio-Frequency Interference Estimation Using Equivalent Dipole-Moment Models and Decomposition Method Based on Reciprocity

Pan, Jianguo; Wang, Hanfeng; Gao, Xu; Hwang, Chulsoon; Song, Eakhwan; Park, Hark-Byeong; Fan, Jun

doi:10.1109/temc.2015.2496210

Cited by 65 publications

(20 citation statements)

References 18 publications

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“…Especially, in the case of IC on the ground plane, only three dipole moments, P z , M x , and M y , can substitute the radiation source . The normalized tangential electromagnetic fields induced by the array of three dipole‐moment sets can be written as,

F_{n} = T_{nk} X_{k}

where F n is the normalized field vector and X k is the dipole moments source array vector. T nk is the normalized transformation matrix which represents the contribution of each array dipole moment to the normalized field at each scanning point.…”

Section: Accuracy Investigation Of Equivalent Dipole Array Sourcesmentioning

confidence: 99%

“…T nk is the normalized transformation matrix which represents the contribution of each array dipole moment to the normalized field at each scanning point. Detailed expressions are shown in References . If scanned field data F n is obtained from measurements or simulations, the linear least‐square method can be applied to obtain the solution for equivalent dipole arrays.…”

Section: Accuracy Investigation Of Equivalent Dipole Array Sourcesmentioning

confidence: 99%

“…Sources of radiated emission from an integrated circuit (IC) can be modeled by equivalent dipole arrays with near‐field scan data . The source modeling method is very effective for estimating radio frequency interference problems.…”

Section: Introductionmentioning

confidence: 99%

“…The source modeling method is very effective for estimating radio frequency interference problems. Once the equivalent dipole sources of an actual complicated IC are found, they can be imported into a full‐wave simulation tool to estimate the near fields in the presence of additional structures in a real system environment, such as a heatsink, antenna shielding box, or dielectric layer. To obtain reliable near‐field estimation results, it is important to extract equivalent dipole arrays with sufficient accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…Sources of radiated emission from an integrated circuit (IC) can be modeled by equivalent dipole arrays with nearfield scan data. [1][2][3][4] The source modeling method is very effective for estimating radio frequency interference problems. Once the equivalent dipole sources of an actual complicated IC are found, they can be imported into a full-wave simulation tool to estimate the near fields in the presence of additional structures in a real system environment, such as a heatsink, 1 antenna 2,3 shielding box, or dielectric layer.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Accuracy investigation of equivalent dipole arrays for near‐field estimation in presence of shielding or dielectric structures

Kwak

Bae

Hong

et al. 2019

Micro & Optical Tech Letters

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The accuracy of equivalent dipole arrays for source modeling of electromagnetic fields is affected by several factors. In the step for extracting equivalent dipole arrays for a given source, there are three factors that can affect accuracy: scanning height, source spacing, and scanning gap. In the evaluation step of reconstructed fields, there are two other factors that can also affect accuracy: evaluation height and additional structures. In this paper, simple guidelines are suggested considering the three factors in extracting equivalent dipole arrays. Also, the effects of the evaluation height on accuracy of reconstructed fields are demonstrated in the presence of shielding or dielectric structures. A feature selective validation process was utilized to evaluate similarities between actual and estimated fields.

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F_{n} = T_{nk} X_{k}

Section: Accuracy Investigation Of Equivalent Dipole Array Sourcesmentioning

confidence: 99%

Section: Accuracy Investigation Of Equivalent Dipole Array Sourcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Accuracy investigation of equivalent dipole arrays for near‐field estimation in presence of shielding or dielectric structures

Kwak

Bae

Hong

et al. 2019

Micro & Optical Tech Letters

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show abstract

Millimeter‐Wave RF Designs

Wang

2019

Wiley 5G Ref

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In this article, the topic of millimeter wave radio frequency (RF) designs is introduced for the fifth‐generation communication system. State‐of‐the‐art studies in both academia and industry are reviewed, from four perspectives of architecture, radio frequency integrated circuit (RFIC) design, package, and measurement. The base station and user equipment architectures are illustrated in details, and the RFIC design, especially for the phased array, is emphasized with several important components, such as power amplifier and on‐chip antenna. Then, antenna‐in‐package technology is illustrated. Later, the over‐the‐air measurement is discussed to resolve the measurement issues. Finally, the current and future challenges in research and practice are pointed out.

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A highly accurate and robust source reconstruction method of printed circuit boards based on complex‐valued neural network

Zhang,

Nie,

Wang

et al. 2023

Circuit Theory & Apps

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SummaryPrinted circuit boards play an increasingly important role in modern electronic systems. Equivalent dipole moments are widely used to reconstruct the radiated fields of printed circuit boards in view of the extremely high complexity. In this paper, an improved source reconstruction method based on complex‐valued neural network is proposed to investigate the radiation properties of printed circuit boards working in microwave frequency band. Firstly, the magnetic field data obtained from the near‐field scanning are utilized to construct a matrix equation based on the source reconstruction theory. Secondly, the kernel of the complex‐valued neural network is constructed through the algorithm of complex numbers, which eventually end up with the novel neural network with the help of the principle of regression optimization. Thirdly, the data obtained from the near‐field scanning are fed into the neural network for effective training to get the equivalent dipole model. Finally, several numerical examples and available measurement results are given to validate the method. Compared with the commonly used Tikhonov regularization method, the proposed method possesses higher accuracy and better robustness in noise suppression.

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Radio-Frequency Interference Estimation Using Equivalent Dipole-Moment Models and Decomposition Method Based on Reciprocity

Cited by 65 publications

References 18 publications

Accuracy investigation of equivalent dipole arrays for near‐field estimation in presence of shielding or dielectric structures

Accuracy investigation of equivalent dipole arrays for near‐field estimation in presence of shielding or dielectric structures

Millimeter‐Wave RF Designs

A highly accurate and robust source reconstruction method of printed circuit boards based on complex‐valued neural network

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