Antenna Patterns; Antenna Radiation Patterns In The Etsi Frequency Band - Siemens SIMATIC RF610T ATEX System Manual

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6.4 SIMATIC RF640A

Antenna patterns

Directional radiation pattern ETSI

The directional radiation pattern is shown for nominal alignment and a center frequency of

866.3 MHz. The nominal antenna alignment is given when the antenna elevation is provided

as shown in the following figure.

Reference system

The half-power beam width of the antenna is defined by the angle between the two -3 dB

points. The range (in %) corresponding to the dB values in the patterns can be obtained from

this table (Page 288).

Note that the measurements presented graphically below were carried out in a low-reflection

environment. Deviations can therefore occur in a normally reflecting environment.

System Manual, 06/2019, J31069-D0171-U001-A22-7618

SIMATIC RF600

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