Equipment & Components for the Satcom & Microwave/RF Industries

Multi-Path Satellite Simulator System

  • Simultaneously tests two satellite terminals
  • Models for X, Ku, DBS, Ka and Q bands
  • Linear and circular polarisation options
  • Fixed installation or portable
  • Ethernet and local controls
  • 3 part, base units and terminals
  • 2 part option – Ethernet control

The MSS series of Multi-Path Satellite Simulators simultaneously talk to two sets of ground equipment, enabling the user to run extensive and prolonged tests without the need to go 'live' on a satellite.

The system is supplied as a three part solution - a base unit and two terminals.

The base control unit is a convenient portable bench instrument with the capability of both local and remote, Ethernet control. This unit is connected to two mastmounted transponders via a power and data cable.

The two transponders are inter-connected - each capable of communicating with a fixed or mobile terminal in a choice of either X, Ku, DBS, Ka and Q bands and with the ability to vary the path attenuation, thereby reducing the real-world atmospheric effects.

Taking the uplink or Transmit (Tx) carrier from one groundbased system the MSS transponder re-transmits on the receive (Rx) carrier frequency for the downlink. But, instead of sending the signal back to the same ground station from which it received it, the MSS makes contact with a second ground terminal, thereby completing the satellite link from point A to point B, but without any satellite being involved.

In addition to the transmission of signal to both terminals under test, a sample of the transmissions is fed back via coaxial low loss cable to the base unit and is then made available at the front panel for connection to a spectrum analyser or other test equipment.

 General Specifications
 LO Frequency Steps
 Maximum Input Level
 Conversion Gain
-35dB nom. (see options)
 Conversion Gain Flatness +/-2dB typ.
+/-0.5dB/40MHz max.
 Attenuation Range
60dB min. (see options)
 Attenuation Control
1.0dB Steps
50 ohms
 Input VSWR 1.8:1 typ. (see options)
 Output VSWR 1.8:1 typ. (see options)
 Signal Related Spurious -25dBc typ.
 LO Related Spurious & Harmonics -30dBm typ.
 Non Signal or LO Related Spurious -60dBc min.
 Input Power 80-240V, 50-60Hz
 Input Power Connector IEC with Fuse
 Operating Temperature 0 to +50C (see options)
 Storage Temperature -10 to +70C
 Lock Alarm LED, Front Panel & Ethernet
 Input Connector (see options) 2.92mm Female Ka Band
SMA Female Ku Band
 Output Connector SMA Female
 Reference Input Connector BNC Female
 Ethernet Connector RJ45
 Size exc connectors etc:
 Base Unit - inches (mm)
 Transponder - Inches (mm)

W10 (255) x H5.7 (145) x D12.6 (320)
W13 (330) x H4.5 (115) x D9 (230
LO Phase Noise (dBc/Hz) typical
Offset Frequency (Hz) LO Frequency (GHz)
2.0 10.0 12.0 25.0
100 -80 -70 -65 -60
1K -90 -85 -75 -70
10K -95 -90 -80 -75
100K -95 -90 -80 -80
1M -120 -115 -115 -110

The AtlanTecRF MSS Multi-Path Satellite Simulator simultaneously talks to two sets of ground equipment, enabling the user to run extensive and prolonged tests without the need to go "live" on a satellite.

Model No Input
Frequency Range
Frequency Range
MSS - 00650065 - X 7.9 - 8.4 7.25 - 7.75 0.65
MSS - 08801095 - Ka 27.5 - 31.5 17.7 - 21.2 7.80 - 10.95
MSS - 04500800 - DBS 17.3 - 18.4 10.7 - 12.7 4.5 - 8.0
MSS - 01490330 - Ku 12.75 - 14.5 10.7 - 12.75 1.49 - 3.30
MSS - 23302530 - Q 43.5 - 45.5 20.2 - 21.2 23.3 - 25.3

We reserve the right to change standard product specifications without notice but will be pleased to consider control drawings for quotation.

T: +44 (0)1376 550220 F: +44 (0)1376 552145 E: 40A Springwood Drive, Braintree, Essex CM7 2YN, England