Satellite
Transponder Module17-21 & 27-31 GHz

ReliaSat
Product Datasheet

TR500

Integrated Transponder module for Ka-band
frequencies.

Overview

TR500 is an integrated Transponder module
designed for Low Earth orbit (LEO) Kaband satellite communication systems. The
Transponder consists of two Ka-band Transceivers
which operate as wideband up/down converters.
ReliaSat Transponders offers up to 250 MHzof instantaneous bandwidth. The on-board
frequency synthesizers, able to lock to an externalor on-board 100 MHz reference signal
included in the Transceivers. The reference
signals are provided by high precision and lowpower consuming Temperature Compensated
Crystal Oscillators (TCXO) with frequency stabilityof ±0.28ppm between -40°C to 85°C. The
Transponder has SMP and SMPM RF connectors,
DC Flying Leads for DC power and 6-Pin Pico-Lockconnectors for DC power enable, PLL lock, current
and temperature sensor connections.

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Features

TX output frequency 27-31 GHz
RX input frequency 17-21 GHz
27 dBm Saturated output power
Tx conversion gain 38-43 dB
Noise figure <2.5 dBApplications•••••Satellite communications
High speed data communications
IOTSecurity
5G

Transponder within a 1U unit.
TR500

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.

Satellite
Transponder Module17-21 & 27-31 GHz

Product Datasheet

Specification Overview
TransmitterParameter

TX Output Frequency Range

TypicalUnit

17-21GHzTX 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 StabilityConversion GaindBm

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 kHz
10 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 StabilityConversion 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 Range
DC Power @ 12 VDC
DC Current @ 12 VDC
TR500

Issue Date: 10/07/2023oo

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
<60.5

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 1

dBc/HzdBc/HzdBc/HzdBc/HzdBc/Hz
dBc
dB
dB
Vdc
W
A
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.

Satellite
Transponder Module17-21 & 27-31 GHz

Product Datasheet

Block Diagram System

Mechanical and Environmental
MechanicalParameter

Total Mass
Form Factor Requirement
Enclosure Material Requirement
Enclosure Planting Requirement
RF Connector Types

Typical<2Cube Sat <1 U>2.4 mm thick aluminium
Nickel (Gold option)
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

Unitkgmm

6-pin Pico-Lock Connector

EnvironmentalParameter

Operating Temperature Range
Operating Environment
Radiation Tolerance (kRad)
Vibration Requirement
Vacuum Requirement
OtherTR500

Issue Date: 10/07/2023

Typical-40 oC to +85 oC
Space50 Krad
Sine 20g @ 25 Khz, random
ThermalESD, EMC

DOC REV 1Page 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 mayresult for the use of the information herein. All specifications are subject to change without notice.

Satellite
Transponder Module17-21 & 27-31 GHz

Product Datasheet

Simplified Schematic Diagram for Transceivers
Within Transponder

LO signal from on-board
Frequency Synthesiser

LO signal from on-board
Frequency Synthesiser

TR500

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.

Satellite
Transponder Module17-21 & 27-31 GHz

Product Datasheet

Specifications For ReliaSat Flat Panel Antennas

ReliaSat’s K and Ka-band space grade Flat Panel Antennas have been designed tobe used with any Ka-band satellite system, offering a simple, cost effective and highperformance solution.

K-band Flat Panel Antenna Specification
Parameter

ValueUnit

Frequency Range

17-21

GHz

VSWR

<1.65

GHz

Peak Gain>20dB

Half-Power Beamwidth (HPBW)

9 - 11Degrees

Polarization

LHCP or RHCP

Preconfigurable

Axial Ratio<3dBPower Handling

5WConnector

K (rear mounted)

MassDimension (Excl. Connector)<50grams

84 x 98mm

Ka-band Flat Panel Antenna Specification
Parameter

Value

UnitFrequency Range

27-31

GHzCentre Frequency

29.25

GHz

3 dB Axial Ration Bandwidth

1.5

GHzPolarization

LHCP or RHCP

Gain

20dBi

3 dB Beamwidth13

DegreeConnector

K (rear mounted)

Impedance

50OhmDimension

51 x 51mm

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

TR500

Issue Date: 10/07/2023

DOC REV 1Page 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.