RF600
System Manual, 09/2005 Edition, J31069 D0171-U001-A0-7618,
7-1
Transponder/tags
7
7.1
Mode of operation of transponders
The tag/transponder mainly comprises a microchip with an integral 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 integral chip
•
Commands received from reader
•
Responses are transmitted to the reader antenna by modulating the reflected radio
waves (backscatter technique)
5HIOHFWHGDQGPRGXODWHG
ZDYHIURPWDJWUDQVSRQGHU
5)5
5HD
$QWHQQD
$QWHQQD
0LFURFKLSZLWK
LQWHJUDWHG
0HPRU\
(OHFWURPDJQHWLFZDYHV
IURPUHDGHUDQWHQQD
7UDQVSRQGHU
$QWHQQD
Figure 7-1
Mode of operation of transponders
The transmission ranges achieved vary in accordance with the size of the tag and the
corresponding dipole antenna. In general the following rule applies: The smaller the tag and
therefore the antenna, the shorter the range.
Содержание SIMATIC RF660
Страница 5: ...Table of contents RF600 System Manual 09 2005 Edition J31069 D0171 U001 A0 7618 v ...
Страница 6: ......
Страница 16: ...System overview 3 1 RF System SIMATIC RF600 RF600 3 4 System Manual 09 2005 Edition J31069 D0171 U001 A0 7618 ...
Страница 66: ......
Страница 96: ...Appendix A 4 Training RF600 A 6 System Manual 09 2005 Edition J31069 D0171 U001 A0 7618 ...