Abstract
In recent years RFID has become more and more widespread and is being used in an ever growing number of applications. Current RFID technology does however face some difïculties in several possible new applications. A change in technology is needed and in this thesis we will examine a very promising candidate, namely Ultra wide band Impulse radio (UWB-IR). To verify the viability of this technology a test chip has been made in 90 nm CMOS process.