Long straight high-frequency transmission cable

A long straight high-frequency transmission cable, comprising:

• a plurality of transmission wires and at least one ground wire parallel to each other;
• a first insulating laminate and a second insulating laminate laminated with each other to cover the transmission wires and the at least one ground wire, wherein the first insulating laminate has a plurality of first conductive plugs separately arranged along a length direction of the at least one ground wire, and each two adjacent ones of the first conductive plugs have a spacing therebetween that is at least greater than 50 mm;
• and
• a first shielding layer and a second shielding layer respectively laminated on the first insulating laminate and the second insulating laminate;
• wherein the transmission wires each have a width greater than 0 and less than or equal to 0.8 mm, and the at least one ground wire has a width greater than 0 and less than or equal to 0.8 mm;
• wherein the at least one ground wire is electrically connected to the first shielding layer by the first conductive plugs.