Patent ID: 8648675

Claim:
A planar transmission line comprising first and second spaced apart planar conductors, the transmission line including a first section in which the first and second conductors extend along a first line and are broadside coupled, the first conductor extending along a first plane in the first section and the second conductor extending along a second plane in the first section, the second plane being parallel to the first plane, and a second section in which the first and second conductors extend along a second line transverse to the first line, the first and second conductors including respective first portions extending in the respective first and second planes that are broadside coupled, and the first conductor including a second portion extending in the second plane electrically in parallel with the first portion of the first conductor, with the first portion of the second conductor and the second portion of the first conductor having adjacent edges that are edge-coupled, the first conductor in the second section extending directly from the first conductor in the first section, the second conductor in the second section extending directly from the second conductor in the first section, the first and second portions of the first conductor extending directly from the first conductor in the first plane and extending in the second section, and the first portion of the second conductor extending directly from the second conductor in the second plane and extending in the second section.