How Converters Can Make RFID Labels

How a strap works

A strap simplifies the connection because it is a chip mounted face down on a small piece of plastic film with metal connections on its surface, created by the supplier, using printing or evaporation. It is then relatively easy to connect the strap to the antenna that the converter may have printed on the paper feedstock, for example. In instances where the popular high-frequency (HF) antenna is needed, there are several printed or etched turns, typically on polyester film substrate, and the strap acts as a crossover, connecting the inner end to the outer end. The alternative would be to make the laminar coil very narrow as it passes under the chip, but this can be expensive and difficult.