Circuit layout, adapter board, probe card, probe system, and related method

Abstract

A circuit layout, an adapter board, a probe card, a probe system, and a related method are provided. The circuit layout is suitable for an adapter board of a probe card and includes a substrate, a first ground trace, a second ground trace, and a switching circuit. The first ground trace and the second ground trace are disposed on the substrate. The switching circuit is electrically connected between the first ground trace and the second ground trace and is used to selectively connect or disconnect the first ground trace and the second ground trace. A trace path of the first ground trace and a trace path of the second ground trace partially or entirely have two extended portions correspondingly extending on a first axis. The extended portion of the first ground trace and the extended portion of the second ground trace have a distance on a second axis, the distance is for electrical coupling, and the first axis is perpendicular to the second axis. Therefore, impedance matching could be improved.

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