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Low Noise Amplifier
The low noise amplifier (LNA) provides gain in the receive path and
amplifies the received microwave signals to the mixer. The gain and noise
figure of the LNA are chosen to maximize the overall dynamic range and
noise performance of the BTR 2400 receiver section.
IF Amplifier
The IF amplifier provides gain in the downconverted received signals to the
required level. It uses a standard CATV amplifier with 50 Ohms input and
output impedance.
Power Amplifier
The power amplifier provides gain in the transmit path. It boosts the signals in
the 24.25-24.45 GHz frequency range to the required level. The amplifier is a
solid state amplifier that has high linearity within a high output power range.
Remote Monitor
The remote monitor unit provides an interface for remotely monitoring the
BTR 2400. The unit communicates with the RSM 9016 by way of a shielded
twisted pair wire cable. An operator can remotely measure and monitor RF
output power (0 to 30 dBm), DRO phase voltage (0 to 15 volts), DRO phase
lock alarm (0, 1), internal temperature (-40 to +80°C) and power supply
voltage (15 volts). Refer the Reunion Redundancy Switching Matrix
Installation Guide, 411-1313-201, and the Reunion DSS 1000 (Digital System
Supervisor) User Manual, 411-1343-500.
Antenna
The BTR 2400 uses a dual pole antenna for transmitting and receiving RF
signals. Physically, the antenna consists of two horns. One horn is connected
to the transmit side and the other one is connected to the receiver RF input.
The transmit wave and receive wave polarities are always orthogonal,
allowing the maximum isolation between the TX wave and the RX wave. The
TX wave polarity is defined as BTR 2400 polarity.
BTR 2400 Release 1.1 1-7
Reunion BTR 2400 Installation Guide
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