Patent ID: 8547280

Claim:
A radiator transition assembly for exciting a long slot radiator of an antenna, the transition assembly comprising: a folded flexible circuit substrate comprising at least two folds forming a long slot radiator; an excitation circuitry configured to generate signals for exciting the long slot radiator; and a microstrip transmission line coupled to the excitation circuitry and positioned along the folded flexible circuit substrate, wherein the microstrip transmission line extends across an opening of the long slot radiator, wherein the opening is defined by a space between adjacent folds of the folded flexible circuit substrate; a flat flexible circuit substrate attached to the folded flexible circuit substrate; a coupling strip positioned on a to surface of the flat flexible circuit substrate and extending across the opening; a via coupling a first end of the coupling strip to the microstrip transmission line; a ground plane positioned on a to surface of the folded flexible circuit substrate, wherein the microstrip transmission line is positioned on a bottom surface of the folded flexible circuit substrate; and a second via coupling the ground plane to a second end of the coupling strip, wherein second end of the coupling strip is opposite to the first end of the coupling strip.