Dual Antenna Inputs; Dual Microwave Receiver Cofdm Demodulator Circuits; Maximal-Ratio Combining Circuit; Figure 2-1: Internal Block Diagram - RF Central MICROLITE User Manual

MicroLite Receiver User Manual

2.3.1 Dual Antenna Inputs

The MLR has two SMA antenna input connectors. The input impedance of the antenna
connectors are 50 ohms.
The frequency band supported by the antenna connectors are labeled next to the antenna
inputs.

2.3.2 Dual Microwave Receiver COFDM Demodulator Circuits

The MLR is capable of receiving COFDM transmissions from compatible products in
multiple bands. The receiver standards supported by the MLR support high data rates
with low error rates.
Each antenna input is filtered and amplified by a low noise amplifier. The output of the
amplifier is filtered again at the input of the RF receiver circuit. The receiver mixer
down converts the received signals to the internal IF frequency.
The COFDM demodulator is programmable to support transmission modes offering
different data rates (Refer to Chapter 5 for more information). The output of the
COFDM demodulator circuits contains transport streams carrying audio, video, and user
data.

2.3.3 Maximal-Ratio Combining Circuit

This feature enhances the robustness of the receiver when line of site obstructions occur
in the transmission path.
Revision 1.1

Figure 2-1: Internal Block Diagram

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