Method and system for information transmission an ultra-wideband (UWB) signal

摘要

A method and a system for transmitting data between a portable apparatus (1) and a write-and/or read module (2) are disclosed. The system comprises at least one portable apparatus and at least one write- and/or read module. The apparatus comprises two electrodes and a signal generator and by which a time-dependent electrical voltage may be applied between the two electrodes. The write- and/or read module comprises a detector with which an electrical voltage or an electrical current may be detected between a first and a second receiver electrode and a data acquisition and decoding unit for determining data from a signal detected between the first and the second receiver electrode. The signal generator is programmed and/or activated such that an ultra-wideband signal (13) with a bandwidth of at least 20% of a middle transmission frequency may be produced by the signal generator and by which data (11) is transmitted to the write and/or read module using the spread spectrum method (12) and the data acquisition and decoding unit comprises means for recovering data from the ultra-wideband signal. The above described portable apparatus transferring data to a write- and/or read module and the above described write- and/or read module for receiving data which is transmitted capacitively and/or resistively by an portable apparatus are also disclosed.