Specifications

WM_PRJ_Q2400_PTS_001 - 003
6th November 2002
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5.1.4 Antenna
Antenna sub-system and integration in the application is a major issue.
Attention should be paid to:
•
Choice of the antenna cable (type, length, performances, thermal
resistance, etc)
•
Antenna connector (type + losses)
These elements could affect GSM performances such as sensitivity and
emitted power
The antenna should be isolated as much as possible from the digital circuitry
(including the interface signals)
#
it is strongly recommended to shield the
terminal.
On terminals including the antenna, a poor shielding could dramatically affect
the sensitivity of the terminal.
Moreover, the power emitted through the antenna could affect the application.
Warning:
Wavecom strongly recommends to work with an antenna manufacturer either
to develop an antenna adapted to the application or to adapt an existing
solution to the application. The antenna adaptation (mechanical and electrical
adaptation) is one of the key issues in the design of a GSM terminal.
5.2 Mechanical integration
Attention should be paid to:
•
Antenna cable integration (bending, length, position, etc)
•
Legs of the module to be soldered on the Ground plane