Antenna Cables - Siemens Simatic RF600 System Manual

①
Vertical beam width
②
Horizontal beam width
4.3.9.5

Antenna cables

Selection criteria
You must observe the criteria listed below when selecting the appropriate antenna cable for
your third-party antenna.
Characteristic impedance
Definition
If the input impedance of a device does not agree with the cable impedance, reflections
occur which reduce the power transmission and can result in the appearance of resonance
and thus to a non-linear frequency response.
Specifications
● You must only use coaxial antenna cables when connecting a third-party antenna.
● This antenna cable must have a nominal characteristic impedance of Z = 50 Ohm.
Antenna cable loss
In order to be able to transmit the available UHF power from the RF600 reader to the
antenna(s), the antenna cable loss must not exceed a value of approx. 4 dB.
SIMATIC RF600
System Manual, xx/2014, J31069-D0171-U001-A15-7618
Read area depending on the beam width
RF600 system planning
4.3 Antenna configurations
69