User's Manual

SmallSTAR-Module 910
StarModulePlus910_1_2.d
oc
Preliminary
Confidential page 6 of 6
DATALOGIC PROPRIETARY INFORMATIONS
RF interface
StarModuleSLC910 has 50 Ohm impedance on RF out in TX and RX mode, therefore impedance
matching is required for antenna system of host.
Care must be taken for the proximity of conductive materials or the user’s hand that will cause a
mismatch of the antenna, decreasing the transceiver RF characteristics.
Moreover, care must be taken to ensure that the host system doesn’t have spurious emissions in the
range 910MHz+/-200kHz, that could cripple receiver sensitivity: it is advised to put a ground plane
under the RF module and to filter the power supply.
Noisy parts, like system buses, must be shielded in order not to irradiate spurious fields.