RFID System
User's Manual
SECTION 7
Reference Data
SECTION 7
Appendices
139
V680-HS52
Effect of Surrounding Metals on the Antenna (Reference)
When embedding the Antenna in metal, be sure the metal does not extend beyond the tip of the
Antenna.
Mutual Interference between Antennas (Reference)
To prevent malfunctioning due to mutual interference when using more than one Antenna, leave
sufficient space between them as shown in the following diagrams.
² Installing the Antennas Facing Each Other ² Installing the Antennas in Parallel
Surrounding metal
(steel)
Surrounding metal
(steel)
60 mm min.
15 mm min.
R22 min.
Antenna Antenna
130 (±65)-mm dia. min.
22-mm dia.
Communications
distance reduced
by approx. 50%.
Do not bend the cable into a curve tighter
than 22 mm in radius.
If the metal around the Antenna reaches the coil surface, the
communications distance will be reduced by approx. 50% compared
with mounting to a non-metallic surface.
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