Patent ID: 7671709

Claim:
A transmission line connector, comprising: a substrate; a transmission line positioned on a first side of the substrate, the transmission line including a signal line and at least two grounds, the signal line being positioned between the at least two grounds, the signal line including a connecting portion extending outside the substrate; and a side ground exposing portion, which is made by cutting out a portion of the substrate from a second side opposite to the first side up to the at least two grounds on the first side of the base material, at an edge portion of the substrate, so that the one of the at least two grounds is exposed from the second side, wherein the transmission line connector is put in contact with a similar transmission line connector by placing the connecting portion of the signal line on a signal line of the similar transmission connector, and having the at least two grounds of the transmission line connector in contact with grounds of the similar transmission connector at the first side ground exposing portion.