Identification Systems
English, Revision 02, Date: 20.01.2015
5
1.2
I
System Configuration
Figure 1
System configuration
1.3
Functional Description
1.3.1
General Functional Description
When the antenna crosses a transponder it supplies it with energy by an alternating
electromagnetic field. As soon as there is enough energy available within the
transponder, it starts to attenuate the magnetic field cyclically with its encoder. This at-
tenuation is reflected to the antenna and generates an amplitude measurement (AM)
of the transmitting component.
Inside the receiver the useful signal will be regained from the AM, decoded and the
data will be output serially. The transponders HG 71325 can be rewritten by the mag-
netic field.
Reading Station
Interpreter
Reading antenna
Serial output of the read out
transponder code and the
positioning impulse
Data carrier
