PATTERN-EDGED METAL-PLANE RESONANCE-SUPPRESSION

• Main Authors: Song, Wil Choon, Hall, Stephen Harvey, Ho, Ying Ern, Yong, Khang Choong, Lim, Yun Rou
• Format: Patent
• Language: English
• Published: 01.10.2020
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; PRINTED CIRCUITS; REGULATING

Apparatuses and methods are provided for mitigating radio frequency interference and electromagnetic compatibility issues caused by the resonance of metal planes of a circuit board. A method for controlling impedance at an edge of a circuit board includes creating a cut at an edge of a plane of the circuit board. The cut extends from the edge of the plane to a point at a depth into the plane. The method can further include creating a cut pattern in the edge of the plane by repeating the cut along the edge of the plane such that an impedance of the plane at the depth is different, or lower, than an impedance of the plane at the edge of the plane. Other aspects are described.