Study on accuracy improvement method for UHF-RFID system with the floor applicable microwave absorber

In recent years, UHF- radio-frequency identification (RFID) systems are paid to attention as one of technologies which achieve the unattended shop or production field. However, the reliability of indoor telecommunication is adversely affected by multiple reflection interference. Especially, because the floor exists as an electromagnetic scatter which cannot be evaded at the warehouse, the shop, and the factory, it is thought that the control of the reflection wave with the floor is necessary and indispensable. Therefore, the microwave absorber which can be paved on the floor is developed and evaluated results of the absorption performance are described.