Patent ID: 8384489

Claim:
A structure of a micro-strip transmission line (MSTL) having a serpentine shape, comprising: a first MSTL; and a second MSTL spaced apart from and parallel with the first MSTL, wherein the first MSTL comprises a first unit serpentine structure and the second MSTL comprises a second unit serpentine structure, wherein each of the first and second unit serpentine structures comprises: a first vertical MSTL perpendicular to a length direction of the first and second MSTLs; a first horizontal MSTL comprising a terminal connected to a side of the first vertical MSTL, the first horizontal MSTL being parallel with the length direction of the first and second MSTLs; a second vertical MSTL comprising a side connected to the other terminal of the first horizontal MSTL, the second vertical MSTL being perpendicular to the length direction of the first and second MSTLs; and a second horizontal MSTL comprising a terminal connected to the other side of the second vertical MSTL, the second horizontal MSTL being parallel with the length direction of the first and second MSTLs, wherein the first vertical MSTL, the first horizontal MSTL, the second vertical MSTL, and the second horizontal MSTL are successively arranged, and wherein the first unit serpentine structure is arranged relative to the second unit serpentine structure such that: a spacing between the first vertical MSTL in the first unit serpentine structure and the first vertical MSTL in the second unit serpentine structure is between approximately 0.0001 to 5 times the width of the first horizontal MSTL in the first unit serpentine structure; a first vertical line is coincident with the first vertical MSTL in the first unit serpentine structure and the first vertical MSTL in the second unit serpentine structure; a second vertical line is coincident with the second vertical MSTL in the first unit serpentine structure and the second vertical MSTL in the second unit serpentine structure; and a first vertical distance between the first horizontal MSTL in the first unit serpentine structure and the first horizontal MSTL in the second unit serpentine structure is equal to a second vertical distance between the second horizontal MSTL in the first unit serpentine structure and the second horizontal MSTL in the second unit serpentine structure.