Esd Protection Measures; Esd Precautions For Antennas - Fibocom GTS-4E-00 Hardware Integration Manual

For optimal performance, it is important to place the inductor as close to the microstrip as possible.
Figure 10 illustrates the recommended layout and how it should not be done.
Good Design Bad Design
Antenna Supply Voltage Antenna Supply Voltage
Figure 10：Recommended layout for connecting the antenna bias voltage
6

ESD Protection Measures

ESD Precautions for Antennas

6.1
Antennas are an area of particular ESD sensitivity for GPS receivers. For improved resistance to
external transient voltage spikes ESD protection circuits can be used. For passive antennas introduce a
coil between the module and the patch (see Figure 11). By using a low capacitance ESD protection
diode in an active antenna design it is possible to achieve ESD protection IEC-61000-2-4 Level 1.
Figure 11：ESD Recommended Design
GTS-4E GPS Module Hardware Integration Manual Page 21 of 22