User Manual

Confidential and Proprietary SEQUANS Communications 12
•Antenna location may affect RF performance. Although the module is shielded to prevent interference in
most applications, the placement of the antenna is still very important — if the host device is insufficiently
shielded, high levels of broadband or spurious noise can degrade the module’s performance.
•Connecting cables between the module and the antenna must have 50 Ohms impedance. If the
impedance of the module is mismatched, RF performance is reduced significantly.
•Antenna cables should be routed, if possible, away from noise sources (switching power supplies, LCD
assemblies, etc.). If the cables are near the noise sources, the noise may be coupled into the RF cable
and into the antenna.
Ground connection
When connecting the module to system ground:
•Prevent noise leakage by establishing a very good ground connection to the module through the host
connector.
•Connect to system ground using the two mounting holes at the top of the module.
•Minimize ground noise leakage into the RF. Depending on the host board design, noise could potentially
be coupled to the module from the host board. This is mainly an issue for host designs that have signals
traveling along the length of the module, or circuitry operating at both ends of the module interconnects.
5 FCC Regulations
This module is designed to meet, and upon commercial release, will meet the requirements of the
following regulatory bodies and regulations, where applicable:
o Federal Communications Commission (FCC) of the United States
o The Certification and Engineering Bureau of Industry Canada (IC)
Upon commercial release, the following industry approvals will have been obtained, where applicable:
o PTCRB for B14
Additional certifications may be obtained upon customer request — contact your Sequans
Communications account representative for details. Additional testing and certification may be required
for the end product with an embedded LM63S1 modem and are the responsibility of the OEM. Sequans
Communications offers professional services-based assistance to OEMs with the testing and
certification process, if required.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.