Coding component for use in logic system associated with e.g. traffic or goods, comprises resonant circuits signaling when excited at resonant frequency

摘要

The coding component includes oscillatory circuits (1) excited by electromagnetic waves. Each has a particular resonant frequency (f1, f2, ... ,fn). Each oscillatory circuit includes a signal unit producing a characteristic signal (S1, S2, ... ,SN), when excited by an electromagnetic wave at its resonant frequency.