Ku-Band Up and Down Converter Unit & Power Supply

MODEL: TR-1414A4-2025

DESCRIPTION

This unit is an RF subsystem for bi-directional (Forward and Reverse) SatCom link applications at Ku-Band.

The upconverter of the unit converts the L-Band IF signal from a modem to Ku-Band frequency for transport to a power mplifier (PA). This forms the Return Link (RL) or transmit path.

The downconverter receives the Ku-Band RF signal from the antenna, pre-amplified by an external LNA mounted in close proximity to the antenna, down converts this to L-Band and routes this back to the modem. There are actually two polarization components to this signal, so there are in fact two receive signals and two downconverters in the unit. This forms the Forward Link (FL) or receive path.

The unit is also responsible for TCP/IP communication with the modem and general system control.

The unit interfaces to the aircraft +28VDC bus for primary power. It also upconverts this 28VDC to approximately 48VDC for transport to, and subsequent use by the power amplifier, also mounted close to the Antenna.

PERFORMANCE

Upconverter Characteristics

Input Frequency Range	950 to 1350 MHz
Output Frequency Range	14.0 to 14.4 GHz
Input Power Range	-31 to +9 dBm
Gain Adjustment Range	-6.5 to +21.5 dB
Gain Adjustment Resolution	0.1 dB max.
Gain Flatness within entire Frequency Range	2.0 dB max. peak-to-peak
Group Delay within entire Frequency Range	3.0 ns max. peak-to-peak

Dual Downconverters Characteristics

Input Frequency Range	11.2 to 12.8 GHz
Output Frequency Range	950 to 1450 MHz
Frequency Tuning Step	50 MHz max.
Input Power Range	-88 to -55 dBm
Gain	35 ± 3 dB
Noise Figure	4.5 dB max.
Gain Flatness within entire Frequency Range	2.0 dB max. peak-to-peak
Group Delay within entire Frequency Range	3.0 ns max. peak-to-peak

General

10 MHz Reference Input at the Upconverter IF Input	+6 to +10 dBm
Output SSB Phase Noise	-54 dBc/Hz @ 100 Hz -66 dBc/Hz @ 1 kHz -72 dBc/Hz @ 10 kHz -90 dBc/Hz @ 100 kHz -110 dBc/Hz @ 1 MHz
Monitoring / Control	100BaseTx Ethernet to modem and RS-485 to PA
+48VDC Output Power to PA	200 W min.
+28VDC Input Power, Excluding Power to PA	50 W typ.

MECHANICAL

RF/IF Connectors	SMA FEMALE JACK
DC PWR IN / 100Base Tx	AMPHENOL 21-901271-002
DC PWR OUT / RS-485 OUT	AMPHENOL 21-901271-001
Dimensions (including connectors and mounting tabs)	15.0” × 10.0” × 5.0”
Weight	23 lbs. Max

ENVIRONMENTAL

Operating Temperature	-55 to +70 °C (10 minutes warm-up at cold start and fan cooled at high temp.)
Humidity	5% to 90% non-condensing
Altitude	0 to 55,000 ft.