Antenna device and method of manufacturing the same

A signal transmitting/receiving antenna device for Radio Frequency Identification (RFID) which executes contactless data communication, the antenna device comprising:

• an antenna module, comprising:
• a dielectric film substrate having a top side and a bottom side;
• an antenna pattern, formed from conductive material, printed on the top and bottom sides of the dielectric film substrate, forming a top antenna pattern part and a bottom antenna pattern part, the top and bottom antenna pattern parts connected to each other through one or more holes extending through the dielectric film substrate;
• and
• top and bottom passivation layers formed on the dielectric film substrate to cover the top and bottom antenna pattern parts;
• and
• a radio wave absorbent printed on one of the top and bottom passivation layers of the antenna module.