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SIMATIC RF600
System Manual, 11/2018, J31069-D0171-U001-A21-7618
333
Transponder
7
7.1
Overview
7.1.1
Mode of operation of transponders
The transponder mainly comprises a microchip with an integrated memory and a dipole
antenna.
The principle of operation of a passive RFID transponder is as follows:
●
Diversion of some of the high-frequency energy emitted by the reader to supply power to
the integrated chip
●
Receiving commands from the reader
●
Responses are transmitted to the reader antenna by modulating the reflected radio waves
(backscatter technique)
Figure 7-1
Mode of operation of transponders
The transmission ranges achieved vary depending on the size of the transponder and
therefore its dipole antenna. In general the following rule applies: The smaller the
transponder and therefore the antenna, the shorter the range.
Содержание SIMATIC RF640A
Страница 12: ...Table of contents SIMATIC RF600 12 System Manual 11 2018 J31069 D0171 U001 A21 7618 ...
Страница 332: ...Antennas 6 8 SIMATIC RF680A SIMATIC RF600 332 System Manual 11 2018 J31069 D0171 U001 A21 7618 ...
Страница 486: ...Accessories 10 3 Reader and antenna holders SIMATIC RF600 486 System Manual 11 2018 J31069 D0171 U001 A21 7618 ...