Chip card with recess to fit exchangeable chip module and antenna formed around recess

摘要

Card has recess (8) to contain chip module with antenna (2) arranged around recess in card body (7). Chip module and antenna each have connecting contacts which are releasably attached to each other. Antenna (2) is formed as coupling coil and contains recess (8) in shape of chip module. Recess has two connection contacts (3.1,3.2) conductively connected with antenna. Chip module fits into recess so its connectors lie exactly on connections of antenna. It is then connected with bonding wires or pressed together by spring on card cover. Card has own energy source in form of battery, rechargeable battery or solar cell and has amplifier for antenna.