Antenna design for a UHF RFID sensor tag inside a switchgear

Nowadays UHF RFID systems are used in several sensor applications. We present an RFID system that is used in switchgears to monitor the temperature of contact points of copper busbars. The switchgear is equipped with an RFID reader and several RFID tags. Each tag is build up by an RFID chip and a temperature sensor. This papers focus on the influence and the design of the tag antenna inside the switchgear.