Voltage rectification: The energy-bottleneck for passive RFID systems (2009)
Feldengut, T., Kolnsberg, S., Kokozinski, R.
Efficient voltage rectification is one the main challenges in passive UHF RFID. When the tag is located several meters from the base station, the amplitude of the UHF signal is critically low. The...
Schmidt, A., Feldengut, T., Kolnsberg, S., Kokozinski, R.
CMOS (Complementary Metal Oxide Semiconductor) analog circuit design for passive RFID transponder systems requires significant decrement of power consumption for almost every system component. The...
A UHF voltage multiplier circuit using a threshold-voltage cancellation technique (2009)
Feldengut, T., Kokozinski, R., Kolnsberg, S.
The operating range of passive UHF transponder systems is largely determined by the tag current consumption and the rectifier efficiency. Reading ranges of several meters have been reported for many...
A passive long-range UHF transponder with integrated temperature sensor (2008)
Feldengut, T., Wang, J., Kolnsberg, S., Kokozinski, R.
Recent development in UHF RFID Tags has been focused on the optimization of the powering and communication range of the reader/tag system. The use of low threshold Shottky-diode rectifiers and the...
A concept for the analysis of cross sensitivities in modern RFID systems (2008)
Wang, J., Feldengut, T., Kolnsberg, S., Kokozinski, R.
In this paper, a concept for the analysis of various cross sensitivities in RFID systems is described. A modern RFID transponder system consists of several analog blocks, a digital section, and...
An analog front end for a passive UHF transponder with temperature sensors (2008)
Feldengut, T., Wang, J., Kolnsberg, S., Kokozinski, R.
We present the analog front-end for a passively powered UHF transponder with integrated temperature sensor that was designed for a 0.35 µm CMOS process with EEPROM, Schottky diodes, and double poly...
Wireless power transmission in sensor transponder systems (2008)
Feldengut, T., Kolnsberg, S., Kokozinski, R.
Wireless power transmission is becoming widespread in different RFID applications such as inventory management, supply chain monitoring, or access control to buildings. These passive transponder...
Mehrwert für Applikationen durch Kombination von RFID+S-Systemen und WPANs (2007)
Kolnsberg, S., Coers, A., Feldengut, T., Kokozinski, R., Lörcks, M.
Aktuell ist ein wachsender Bedarf an drahtlosen Kommunikationssystemen mit kurzer Reichweite in Verbindung mit RFID (Radio Frequency IDentification ) Systemen zu beobachten. Verschiedene Transponder...