Miniaturized wideband plannar electromagnetic bandgap structures using high-k dielectrics

Mohajer-Iravani, Baharak; Ramahi, Omar M.

doi:10.1109/aps.2007.4396147

Cited by 3 publications

(2 citation statements)

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“…The top view of the 2D array of periodic planar EBG structures is shown in Figure 1(a). This structure was introduced in [2] and incorporated in package design in [3,4]. We emphasize that this structure was selected merely as an example of a planar EBG power plane as the analysis presented here applies equally to other planar structures.…”

Section: Characterization Of Ebg Structurementioning

confidence: 99%

“…In recent work, miniaturized planar EBG structures were designed using high-k materials and were introduced as a highly effective mechanism for suppressing switching noise in high speed integrated printed circuit boards and packages [2][3][4]. The potential and advantages of adapting these new designs were discussed and validated using numerical full-wave three-dimensional electromagnetic simulators.…”

Section: Introductionmentioning

confidence: 99%

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On the Suppression Band and Bandgap of Planar Electromagnetic Bandgap Structures

Mohajer-Iravani

Ramahi

2014

International Journal of Antennas and Propagation

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Electromagnetic bandgap structures are considered a viable solution for the problem of switching noise in printed circuit boards and packages. Less attention, however, has been given to whether or not the introduction of EBGs affects the EMI potential of the circuit to couple unwanted energy to neighboring layers or interconnects. In this paper, we show that the bandgap of EBG structures, as generated using the Brillouin diagram, does not necessarily correspond to the suppression bandwidth typically generated usingS-parameters. We show that the reactive near fields radiating from openings within the EBG layers can be substantial and are present in the entire frequency band including propagating and nonpropagating mode regions. These fields decay fast with distance; however, they can couple significant energy to adjacent layers and to signal lines. The findings are validated using full-wave three-dimensional numerical simulation. Based on this work, design guidelines for EBG structures can be drawn to insure not only suppression of switching noise but also minimization of EMI and insuring signal integrity.

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Section: Characterization Of Ebg Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%