Patent ID: 7683645

Claim:
A high-frequency probe card comprising: a circuit board having a plurality of signal circuits and a plurality of grounding circuits respectively spaced from said signal circuits at a predetermined pitch and respectively electrically connected to a zero potential; a plurality of transmission lines disposed outside said circuit board, each of said transmission lines having a first lead wire electrically connected to one of said signal circuits, a second lead wire electrically connected to one of said grounding circuits, and a first electrically insulating covering axially covered on said first lead wire, said first lead wire and second lead wire being made of metal, arranged side by side, and spaced from each other at a predetermined pitch; and a plurality of signal probes and at least one grounding probe respectively made of metal, said signal probes being respectively electrically connected to the first lead wires of said transmission lines, said at least one grounding probe being electrically connected to the zero potential.