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Application-Note
ID ISC.ANT800/600
FEIG ELECTRONIC GmbH
Page 14 of 33
N11000-2e-ID-B.doc
3.2. Tuning the first base antenna
To tune the antenna you must first remove the cover over the antenna opening. The recommended
tightening torque of the cover screws when attaching the cover is 0.2 Nm – 0.25 Nm.
Next, connect the first base antenna directly to the Reader. Terminate the second antenna using a
50
Ω
termination resistor.
Begin the tuning procedure with the first base antenna. Next tune the second base antenna. Since
the two neighboring base antennas affect each other mutually, the first base antenna must then be
retuned. The third and fourth antennas are tuned in the same sequence. Tuning begins with An-
tenna 3. Next Antenna 4 is tuned, and then Antenna 3 again.
Figure 6: Configuration for tuning the first base antenna
4 x ID ISC.ANT800/600-A
ID ISC.LR200-A
50
Ω
termination resistor
9 cm
20 cm
25 cm
Antenna 1
Antenna 2
Antenna 3
Antenna 4
SWR - Meter