Antenna integration: Shielding
Integrator’s Guide – RIM 801D OEM Radio Modem
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(C) Flange Mount Cable Jack part number 2036-5003-02 (RG 142).
Pictures of these three are shown below. Please refer to -
Appendix II for contact information for both M/ACOM and Huber&Suner.
(B)
(A)
(C)
Figure 9: Example SMA Jack Connectors
RIM offers a comprehensive Developer’s Kit for the RIM 801D to assist
system designers. Included in the kit is a 50
Ω
antenna cable. This cable has
been matched to the radio modem and may be directly connected to a
suitable antenna, such as the 6 dB Magmount antenna that is optionally
included with the kit.
For best results, the antenna should be connected directly to the antenna
cable. If an extension cable is required, it should be low loss, as short as
possible, and have an impedance of 50
Ω
. It is important that a proper
matching connector be used, as each connector in the signal path introduces
a return loss, thereby reducing performance.
If the device will be used in vehicles, then it should be provided with a
connector which allows the user to attach the antenna directly to the case, or
to attach a cable which leads to an antenna mounted on the exterior of the
vehicle.
Shielding
The RIM 801D is designed to provide high immunity to RF noise;
consequently, it will not be necessary to provide special shielding. In fact, it
is more important that the power supply to the RIM 801D be free of high-
