Ublox PAM-7Q, Руководство по интеграции оборудования

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PAM-7Q - Hardware Integration Manual
UBX-13003143 - R06 Early Production Information Design
Page 13 of 26
Figure 4: Pad layout of mounting side for PAM-7Q module.
There are some rules that need to be followed in order to maintain good performance for the on-board patch
antenna of the PAM-7Q:

Solder the pin header to the module in such way that the pins are as short as possible on the antenna
side of the PAM-7Q module (see
Figure 5 ).

Place any active circuitry (processors, memory busses, switching regulators, etc.) on the motherboard as
far away as possible from the PAM-7Q module.

Design a solid VDD source for the PAM-7Q module (VDD supply voltage ripple should be <50 mVp-p).

If there is no need for the PPS and DDC signal, a 4-pin header (for example Samtec TLW-104-06-G-S)
can be used to contact pins #1 through #4. However, the 8-pin header is recommended since it is
mechanically more robust. In this case, pins #5 to #8 may be left floating on the motherboard.
Figure 5: Side view of the pin header assembly for the PAM-7Q module.
Figure 6 describes the footprint for PAM-7Q module.