On-Board Pcb Antenna; External Antenna Connection - We PROTEUS-III User Manual

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-III
The RF pin of module can be coupled to on-board PCB antenna or an external antenna.
Two variants of the Proteus-III are certified:
• For the on-board PCB antenna: 22 pF shall be assembled on C28.
– If additional tuning is needed in the end application, C27 and C26 can be assembled.
– The exact values of C27 and C26 shall be specified in the end application corre-
sponding to the individual need.
• For the external antenna: 22 pF shall be assembled on C6.
– If additional tuning is needed in the end application, C21 and C26 can be assembled.
– The exact values of C21 and C26 shall be specified in the end application corre-
sponding to the individual need.
To reference to the Würth Elektronik eiSos' FCC ID it is mandatory to use the
trace design.
Order code 2611011024000
Version 1.8 , July 2022
Figure 31: On-board PCB antenna
Figure 32: External antenna connection
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