LM940 Hardware Design Guide
1VV0301352 Rev. 18 Page 52 of 75 2022-01-04
This allows the module to work well with a passive GNSS antenna. If the antenna cannot
be located near the LM940, then an active antenna (that is, an antenna with a low noise
amplifier built in) can be used with an external dedicated power supply circuit.
GNSS receive path uses either the dedicated GNSS connector or the shared AUX
connector.
Note: Please refer to the LM940 AT Commands Reference Guide,
80545ST10791A for detailed information about GNSS operating
modes and GNSS Antenna selection.
Antenna Connection
7.5.1. Antenna Connector
The LM940 is equipped with a set of 50 Ω RF U.FL. connectors from Hirose U.FL-R-SMT-
1(10).
The available connectors are:
• Main RF antenna: TX/RX path
• Auxiliary RF antenna: Combined Diversity and GNSS
• GNSS RF antenna: Dedicated GNSS
See the picture below for their position on the interface.
To Next Page
Loading...
