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3.4.4
External Antenna
An antenna (internal or external) must be connected to the Developer Board for adequate GSM reception. You can connect the
g20 to either the on-board internal antenna or to an external antenna.
Two RF connectors on the side of Developer Board, labeled INT ANT and EXT ANT on the cover, are used for setting up the
antenna.
On the inside of the Developer Board, the EXT ANT connector is connected to the g20 and the INT ANT is connected to the
on-board internal antenna.
You must perform one of the following:
• To use the internal antenna, connect the EXT ANT and INT ANT connectors with the additional RF cable supplied in the
Developer's Kit.
• To use an external antenna, connect an external antenna or antenna application to the EXT ANT connector. (The connection
cable is not included.)
98-08901C67-O
External
Antenna Input
Figure 15. Antenna Connectors (external)
g20 RF Cable
Internal Antenna
Figure 16. Antenna Connectors (internal)
Developer Board and Interfaces Description
Internal
Antenna Input
INT ANT
Additional
RF Cable
EXT ANT
On-board
23
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