42 von 46
Characteristics and specific Limits of the Antennas
Wide Range antenna
Working area 0 … 7 cm
Working area > 7 cm
Occupational exposure
Limits head and body 10 W/kg
Limits local limbs 20 W/kg
P
in
* = 0.92 W
General exposure
Limits head and body 2 W/kg
Limits local limbs 4 W/kg
P
in
= 0.4 W
P
in
= 0.92 W
*P
in
= conducted power at antenna input
Wide Range Antenna can always be supplied with a conducted input power of 0.92 W if the working area and thus the
contact to persons is further than 7 cm away from the antenna. In cases where the working area is less than 7 cm, the
input power of the antenna must be reduced to 0.4 W!
11.4
SMSH Antenna
The SMSH family of antennas includes the SMSH ETSI/FCC and the SMSH ©KRAI ETSI/FCC
Technical features:
■
Easy to install or retrofit
■
Strong separation of reading/non-reading zone
■
Extremely thin design
■
Near-field applications
■
Reading range: 0-3 m
■
Very high, homogeneous detection field
■
Optional cascade function for up to
32 antennas (only with ©KRAI Reader)
The SAR value at a distance of 20 cm in front of the
antenna up to the maximum reading range is well below
the limit values. This means that the conformity for this
antenna is given.
For the case that the SMSH antennas are also used with
less than 20 cm distance in front of the antennas, a
numerical calculation of the specific absorption rate (SAR)
in the range 0 ... 20 cm was carried out.
30 cm
30 cm
