Title :
An Interface Circuit for Contactless Power and Data Transmission for Chipcard and Identification Systems
Author :
Donig, G. ; Melbert, J. ; Scheckel, B. ; Schön, K. -R
Author_Institution :
Siemens AG, Bereich Halbleiter, Balanstr. 73, 8000 Mÿnchen 80
Abstract :
A new interface circuit for contactless transmission of power and information between a fixed terminal and mobile data carrier is presented. The interface derives the dc-supply voltage from the received RF signal and performs a bidirectional data transmission between the nonvolatile memory and the terminal.
Keywords :
Amplitude modulation; Base stations; Bridge circuits; Coils; Data communication; Demodulation; Radio frequency; Regulators; Transceivers; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1991. ESSCIRC '91. Proceedings - Seventeenth European
Conference_Location :
Milan, Italy
