Parameter characterisation and automatic impedance matching of 13.56 MHz NFC antennas. - Harald Witschnig; Michael Roland 001; Martin Gossar; Harald Enzinger (Elektrotech. Informationstechnik, 2009)

Chip impedance characterization for contactless proximity personal cards. - Michael Gebhart; Johannes Bruckbauer; Martin Gossar (CSNDSP, 2010)