Installation manual antennas
12
Modifications, misprints and errors excepted
English
3.
Product description
3.4.
Wide Range antennas
For the standard wide range applications with read ranges up above 10 m Kathrein offers wide range antenna
types, which are characterized by a beam width of 70° (WiRa 70), 40° (WiRa 40) and 30° (WiRa 30) and a cir-
cular or linear polarization
antenna typ
Order number
Öffnungswinkel Polarisation
Frequenzbereich
WiRa 30 ETSI
52010086
30°
circular
865 – 868 MHz
WiRa 30 FCC
52010087
30°
circular
902 - 928 MHz
WiRa 30 - linear ETSI
52010248
30°
linear
865 – 868 MHz
WiRa 30 - linear FCC
52010249
30°
linear
902 - 928 MHz
WiRa 40 - linear ETSI
52010251
40°
linear
865 – 868 MHz
WiRa 40 - linear FCC
52010252
40°
linear
902 - 928 MHz
WiRa 70 ETSI
52010078
70°
circular
865 – 868 MHz
WiRa 70 FCC
52010079
70°
circular
902 - 928 MHz
For standard UHF applications a circular polarization is used, when the orientation of the transponders is not
known, or may occur a randomly. This circular polarization was significantly improved in comparison to the an
-
tennas available on the market. For the so-called axial ratio, which is used as a characteristic value for circular
polarization, the two new models achieve typical values of 1 dB. If specifi ed at all, the usual value on the market
lies at around 3 dB. The improved circularity of the Kathrein wide range antennas leads to a significantly reduced
influence of the read results caused by the position or orientation of the transponder.
Linearly polarized antennas are used for UHF applications, if the orientation of the transponder is fixed and well
defined. In this case, the lower polarization loss of linear antennas will lead to bigger read range.
Great importance was also placed on the front-to-back ratio of the antennas to reduce
the influence of the adjacent (installation) environment on the antenna properties.
All antennas have an extremely high protection class which guarantees problem-free use in any environment.
The use of high-quality materials for a long service life and high levels of reliability contribute to the optimal perfor-
mance provided by the antennas under even the most challenging of conditions.
Figure 6: Wide Range 70° antenna
Figure 8:
Wide Range 30° antenna
Figure 7: Wide Range 40° antenna
