Antenna device and assembly of the antenna device

A method of making an antenna device, comprising:

• alternately forming convex and concave portions on side faces of a substrate;
• forming a helical conductor layer on upper and lower faces of the substrate, and on one of the concave portions and convex portions so as to spirally surround the entire substrate;
• sequentially disposing one of the convex portions and concave portions including the helical conductor layer with a predetermined distance on the side faces of the substrate;
• configuring one of the convex portions and concave portions including the helical conductor layer to be a power feed electrode for feeding electricity to the helical conductor layer;
• and
• configuring another one of the convex portions and concave portions including the helical conductor layer to be an earth electrode for grounding the helical conductor layer.

An antenna device, comprising:

• alternating convex and concave portions on side faces of a substrate;
• and
• helical conductor means on upper and lower faces of the substrate, and on one of the concave portions and convex portions for spirally surround the entire substrate,
• wherein the covex portions and concave portions including the helical conductor means are sequentially disposed with a predetermined distance on side faces of the substrate,
• wherein one of the convex portions and concave portions including the helical conductor means comprises power feed electrode means for feeding electricity to the helical conductor means, and
• wherein another one of the convex portions and concave portions including the helical conductor means comprises earth electrode means for grounding the helical conductor means.