Transceiver
Downlink Module

ReliaSat

17-21 & 27-30 GHz

Product Datasheet

TR400

Integrated transceiver downlink module for Kaband frequencies.

Overview

TR400 is a fully integrated standalone transceivermodule designed for Ka-band communication
systems. The Transceiver operates as a wideband
up/down converter when combined with amodem/ Software Defined Radio (SDR) toenable a fully functional Ka-band satellite
communications system designed for use in Low
Earth Orbit (LEO).
This Transceiver offers up to 250 MHz of
instantaneous bandwidth. On-board frequency
synthesizers able to lock to an external or onboard 10 MHz or 100 MHz reference signal
are included on the Transceiver. The on-board
reference signals are provided by high precision,
low power consuming Temperature Compensated
Crystal Oscillators (TCXO) with frequency
stability of ±0.28ppm between -40°C to 85°C.
The Transceiver is fully enclosed in an aluminium
housing with SMP and SMPM RF connectors, DCFlying Leads for DC power and 6-Pin Pico-Lockconnectors for DC power enable, PLL lock, current
and temperature sensor connections.

••••Features

TX output frequency 17-21 GHz
RX input frequency 27-30 GHz
TX IF frequency 1-5 GHz
RX IF frequency 1-4 GHzApplications•••••

Satellite communications
High speed data communications
IOT
Security
5GSpace Heritage 20thJanuary 2021
Rocket Labs Mission 18,
OHB SatComm

TR400

Issue Date: 10/07/2023

DOC REV 1

Page 1 of 5

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

TransceiverDownlink Module17-21 & 27-30 GHz

Product Datasheet

Specification Overview
TransmitterParameter

TX Output Frequency Range

TypicalUnit

17-21

GHz

TX Saturated Output Power (Pin=-15 dBm) 27
TX Output Power at P1dB Compression(Pin=-14 dBm)
IF Input Frequency Range
IF Input Power
Reference Frequency
Reference Stability
Conversion Gain

dBm

26dBm

1-5-40 to -15
10 or 100 (on-board or external)±0.28 (-40 C to +85 C)
38-43

GHzdBm
MHzPPMdB

Gain Flatness Across Full 1 - 5 GHz Band

±2.5dB

Gain Flatness±1dB

Typical Phase Noise
1 kHz10 kHz
100 kHz
1 MHz
Spurious (in band 1-5 GHz)
Supply Voltage Range
DC Power @ 12 VDC
DC Current @ 12 VDC

10 MHz-80-81-104-124-507-42<11.51

Over 250 MHz Channel bandwidth from SDR

ReceiverParameter

Rx Input Frequency Range
RX Input Power Range
IF Output Frequency Range
IF Output Power Range
Reference Frequency
Reference Stability
Conversion Gain
Gain Flatness Across Full 1-4 GHz Band
Gain Flatness
Over Typical Channel Bandwidth from SDR

Typical Phase Noise
1 kHz
10 kHz
100 kHz
1 MHz
Spurious (in band1-4 GHz)
Image Rejection
Noise Figure
Supply Voltage RangeDC Power @ 12 VDC
DC Current @ 12 VDC
TR400

Issue Date: 10/07/2023

oo

100 MHz
-94-95-110-120

Typical27-30-120 to -30
1-4-90 to 0
10 or 100 (on-board or external)±0.28 (-40 C to +85 C)
30-35±2.5oo±1
10 MHz-83-86-108-122-60
62
<2.5
7-42
<6
0.5

dBc/HzdBc/HzdBc/HzdBc/HzdBc/Hz
dBc
Vdc
W
A

Unit
GHz
dBm
GHz
dBm
MHz
PPM
dB
dB
dB

100 MHz-89-90-95-119

DOC REV 1dBc/Hz
dBc/HzdBc/HzdBc/HzdBc/HzdBc
dBdBVdcWA
Page 2 of 5

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

Transceiver
Downlink Module17-21 & 27-30 GHz

Product Datasheet

Mechanical and Environmental
MechanicalParameter

PCB Dimensions
Mechanical Enclosure Required
Mechanical Enclosure Dimensions
Total Mass
Form Factor Requirement
Enclosure Material Requirement
Enclosure Planting RequirementRF Connector Types

Typical

96 x 91 x 1 (max)Yes
96 x 91 x 38 (max)<1Cube Sat>2.4 mm thick aluminium
Gold or Nickel
SMPM edge mountDC Connector Types

DC flying leads

IF Signal Connector Types
Current Sensor, Temperature Sensor,
Frequency Synthesiser Lock & DC Power
Enable Connections

SMP edge mounts

Unitmmmmkgmm

6-pin Pico-Lock Connector

Environmental
Parameter

Operating Temperature Range
Operating Environment
Radiation Tolerance (kRad)
Vibration Requirement
Vacuum Requirement
Compliance Standards

TR400

Issue Date: 10/07/2023

Typical-40 oC to +85 oCDOC REV 1

Page 3 of 5

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

Transceiver
Downlink Module17-21 & 27-30 GHz

Product Datasheet

Simplified Schematic Diagram

LO signal from on-board Frequency
Synthesiser

LO signal from on-board Frequency
Synthesiser

TR400

Issue Date: 10/07/2023

DOC REV 1

Page 4 of 5

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

Transceiver
Downlink Module17-21 & 27-30 GHz

Product Datasheet

Mechanical Enclosure Preliminary Dimensions

Contact Information
ReliaSat European Offices
e: sales@reliasat.com
www.reliasat.com

TR400

Issue Date: 10/07/2023

DOC REV 1

Page 5 of 5

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.