RFID UHF Sensor
6
6 Characteristics of the antenna
The RFID UHF antenna integrated in the DTE820 is a mid-range antenna which
meets the requirements of many RFID applications�
Mid-range antennas have been developed for applications in the near and far
field� Special attention was paid to a small design for integration in compact
environments� For dimensions of 156 x 126 reading ranges of more than 2 m are
nevertheless possible� Mid-range antennas also have an increased selectivity at
lower read distances as compared to conventional antennas� That means that they
are suitable for the transition range with various tags�
6.1 Reading range and tag shape
Reading range
Tag shape
loop-shaped
hybrid-type
dipole-type
10-30 cm
30 - 100 cm
> 100 cm
The correct combination of antenna and tag is essential for every RFID
application� This ensures a high reading rate and reliable system operation�
0
2 m
4 m
2 m
4 m
DTE820 100° 30 ERP
2 m
1 m
Figure: DTE820 reading range
