Q2406B

Manufacturer Part NumberQ2406B
ManufacturerWAVECOM
Q2406B datasheet
 


Specifications of Q2406B

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Page 59/81

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5 Design Guidelines
The purpose of the following paragraphs is to give design guidelines.
5.1 HARDWARE and RF
5.1.1 EMC recommendations
The EMC tests have to be performed as soon as possible on the application to
detect any possible problem.
When designing, special attention should be paid to:
Possible spurious emission radiated by the application to the RF receiver
in the receiver band
ESD protection on SIM (if accessible from outside), serial link,…
EMC
protection
emissions)
Bias of the Microphone inputs
Length of the SIM interface lines (preferably <10cm)
Ground plane : WAVECOM recommends to have a common ground
plane for analog / digital / RF grounds.
Metallic case or plastic casing with conductive paint are recommended
Note :
The module does not include any protection against overvoltage.
5.1.2 Power Supply
The power supply is one of the key issues in the design of a GSM terminal.
A weak power supply design could affect in particular :
EMC performances
the emissions spectrum
the phase error and frequency error
confidential ©
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.
WM_PRJ_Q2400_PTS_002 - 002
on
audio
input/output
24th January 2003
(filters
against
900MHz
Page : 59 / 81