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Characteristics and specific Limits of the Antennas
Exposure scenarios for humans occur at all distances up to 20 m. To illustrate the reading range, a comparison of the
antennas is shown.
The reading ranges of the low range antennas are too small in relation, so that a display was omitted.
11
Characteristics and specific Limits of the Antennas
11.1
Low Range Antenna
The Low Range antenna family includes the LoRa and ULoRa antennas.
Technical features:
■
Use depends on data carrier type
■
loop or dipole transponder
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Limited read range < 20 cm
■
Extremely high selectivity ( typ. 5 cm )
■
Extremely low gain ( < -15 dBi)
■
Dimensions: 6.3 cm x 9 cm
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High mechanical robustness (IP67)
■
Ideal for conveyor belts and access systems
■
Little or no interference from metallic objects in the vicinity
Please refer to the following diagram for the assignment of the different transponders to the respective antenna type
5
10
15
20
5
10
2
4
6
8
WRA7070 bei 2W ERP
SMSH bei 2W ERP
MiRa 100 bei 1W ERP
WRA3070 bei 2W ERP
SMSH HG bei 2W ERP
S-MiRa 100 bei Pin = 1W
WiRa 40 bei 2W ERP
6,3 cm
9 cm
