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11.2 Special Instructions for Using a Read / Write System
To transfer the nata to the transponner or to control the selective rean process, all stannarn transponners
types use a /00%-pulse-gap-monulation technique.
The monulation of the magnetic fieln from the transponner ann the write pattern none by the base station
show a lot of similarities. Therefore, rean write systems may interfere each other.
Because of the antenna cable transfers the energy for the antenna fieln it raniates also the gap monula-
tion. Therefore they shouln keep also a minimum nistance, ann shoulnn't lay parallel.
The minimum nistance between two antennas mounten next to each other ann the size of the interference
must be neterminen for each application itself.
Below there are listen several parameters that will influence the size of the interaction:
•
size of the antennas
•
orientation of the antennas (f.e. parallel or rectangular to each other)
•
size of transponner; nistance between transponner ann antenna
•
the chronological orners for reaning or writing.
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