User Manual

Antenna integration: Antenna cabling
Integrator’s Guide – RIM 801D OEM Radio Modem
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When the computing device is hand-held or is worn next to the body of the
user, the antenna should be positioned to radiate away from the body.
Otherwise, the effective coverage area of the radio will be reduced.
Antenna cabling
The RIM 801D radio modem must be connected to an antenna with a
suitable low loss matching cable, with an impedance of 50 Ω.
Connecting directly to the RIM 801D
On one corner of the RIM 801D is an MMCX connector, to which an
antenna cable is attached. On one end of this cable is an MMCX connector,
and on the other end is an SMA connector. This connector may be bolted
onto the case of a wireless device. An antenna is then connected to the SMA
jack. This general arrangement is shown in the diagram below.
RIM 801D OEM
MMCX SMA
Outer casing of
embedded sysem
Antenna
cable
Figure 7: Connecting an antenna