Patent ID: 7532085

Claim:
An electronic device comprising: a first transmission line composed of a first signal line transmitting a given high frequency wave signal and a first ground, the first transmission line being a micro strip line having a first dielectric layer between the first signal line and the first ground, the first ground being provided on a semiconductor chip, the first signal line being provided on the first dielectric layer and above the semiconductor chip; a second transmission line composed of a second signal line transmitting the high frequency wave signal and a second ground, the second transmission line being a micro strip line having a second dielectric layer between the second signal line and the second ground, the second signal line being provided on the second dielectric layer; and a ground-coupling portion coupling the first ground and the second ground, at least a part of the ground-coupling portion going through on at least one of the first dielectric layer and second dielectric layer, a phase difference between the high frequency wave signals at both ends of the ground-coupling portion being substantially integral multiple of 180 degrees.