UM980eb User Manual
12
Antenna Circuit
UC-08-M32 EN R1.0
4.2
Antenna Feed Circuit
The antenna feed circuit consists of the anti-reverse current design, anti-surge design,
filter inductors, and ESD protection.
The supply voltage can be selected from 5 V, VCC_RF or ANT_BIAS3 through
R31/R29/R30. When using the 5 V voltage or VCC_RF, the antenna detection circuit on
UM980eb will be bypassed.
The ESD protection diode should support high-frequency signal (above 2000 MHz).
Nexperia PESD5V0F1BL is recommended here.
J5
Figure 4-3 Antenna Feed Circuit
Figure 4-4 Antenna Feed Circuit on the Bottom of UM980eb
