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US 8,558,120 B2Granted
Multilayer board for suppressing unwanted electromagnetic waves and noise
AssigneeElectronics and Telecommunications Research Institute
InventorsJong Hwa Kwon, Dong-Uk Sim, Sang Il Kwak
Life of this patent
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Abstract
A multilayer board for suppressing unwanted electromagnetic waves and noise includes: a power plane and a ground plane constituting a power distribution network; an electromagnetic wave suppression structure placed on the power plane or the ground plane; and a decoupling capacitor placed on the power plane or the ground plane, wherein the electromagnetic wave suppression structure and the decoupling capacitor are placed together.
Claims10
A multilayer board for suppressing unwanted electromagnetic waves and noise, comprising:
- a power plane and a ground plane constituting a power distribution network;
- an electromagnetic wave suppression structure placed on the power plane or the ground plane;
- and
- a decoupling capacitor placed on the power plane or the ground plane,
- wherein the electromagnetic wave suppression structure and the decoupling capacitor are placed together, and
- wherein, in the electromagnetic wave suppression structure, an electromagnetic bandgap unit cell structure having a frequency band for suppressing the flow of electromagnetic waves or surface currents is implemented in a shape of one of a rectangle, a square, a triangle or a lozenge.
3 more elements
Dependencies are inferred from the claim text.