5-9 MINI-LINK BAS
EN/LZB 111 0542 P2B Technical Description
5.3 RAUs
The MINI-LINK BAS comprises the following radio models referred
to the indicated frequency bands:
• 24.5 - 26.5, ETSI 26 GHz
• 27.5 - 28.35, LMDS "A" 28 GHz
• 31.0 – 31.30, LMDS "B" 31 GHz
They are available for different frequency channel arrangements,
according to the Federal Communication Commission (FCC), ITU-R
and Conference on European Post and Telegraph (CEPT)
recommendations.
Figure 5-4 RAU
The RAU is a waterproof box, with a handle for lifting and hoisting. It
fits on the back of the integrated antenna unit, where it is connected to
the RF-port. Physically, a printed board assembly, RF Multi-Chip
Modules (MCMs) and branching filters, constitute the MINI-LINK
BAS RAU.
The printed board assembly includes external interfaces towards the
indoor parts. This interface is featured by a 50 Ohm N-type connector.
A connector for RF-input level measurements and a set of LEDs are
accessible from the outside of the RAU.
The MCMs consist of a mechanical assembly, containing the MMICs,
which perform the RF conversion. The branching filters provide the
waveguide interfaces towards the antenna and are mounted between
the waterproof box and the printed board assembly.
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