User Guide

ME910G1 HW Design Guide
1VV0301593 Rev.7 Page 59 of 98 2021-02-02
• place EM noisy devices as far as possible from ME910G1 antenna line;
• keep the antenna line far away from the ME910G1 power supply lines;
• if EM noisy devices (such as fast switching ICs, LCD and so on) are present on the
PCB hosting the ME910, take care of the shielding of the antenna line by burying it
in an inner layer of PCB and surrounding it with the Ground planes, or shield it
with a metal frame cover.
• if EM noisy devices are not present around the line, the use of geometries such as
Microstrip or Grounded Coplanar Waveguide is preferable, since they typically
ensure less attenuation if compared to a Stripline of the same length.
The following image is showing the suggested layout for the Antenna pad connection:
Figure 17: Layout for the Antenna pad connection
PCB Guidelines in case of FCC Certification
In the case FCC certification is required for an application using ME910G1, according to
FCC KDB 996369 for modular approval requirements, the transmission line must be
similar to the one implemented on the ME910G1 interface board and described in the
following chapter.