Transmission line having improved bending durability

A transmission line having improved bending durability, comprising a strip structure or a micro-strip structure that is divided into a base part and a bending part that is bent and unfolded based on the base part,

• wherein the base part and the bending part include:
• a signal line configured to extend in a length direction so as to transmit a high frequency signal;
• a first dielectric of which an upper surface or a lower surface is provided with the signal line formed thereon;
• a second dielectric formed above the first dielectric;
• a first bonding sheet located between the first dielectric and the second dielectric in the base part;
• and
• a first protective sheet having a lower side coupled to the first dielectric and an upper side separated from the second dielectric in the bending part,
• wherein the first dielectric is coupled to the second dielectric through the first bonding sheet in the base part, and
• the first dielectric is separated from the second dielectric by the first protective sheet in the bending part.