Communication Systems

The Benefit

Why use Tesat´s Communication Systems

Tesat is a one-stop-shop for your program: We cover all aspects and tasks necessary for a successful payload program incl. integration and test (AIT) as well as in-orbit testing. Our core competencies are design, architecture and analysis of end-to-end Payloads and Repeaters as well as project and procurement management.

Starting point is the transformation of mission or Payload requirements into subsystem and equipment specifications as well as design and layout optimization with respect to performance, energy efficiency, geometry, mass and further customer-specific requirements. We take advantage of exceptional knowledge and heritage as well as cutting-edge technologies on equipment level all available at the Tesat site. With this, we enable system designs that are optimized to fulfill the need of our customers. Our focus is on customer specific solutions, with priority on small and medium sized communication payloads including Hybrid Optical/RF Relay payloads, making Tesat a predestinated hosted Payload supplier.

Our customers benefit from:

Our comprehensive product portfolio and equipment know-how
Our extensive expertise with regard to system engineering, design, analysis, simulation, integration and test
The in-house Parts Agency
Our well-established procurement management based on long-term customer-supplier-relationships
The application of state-of-the-art technologies and processes
The multitude of available engineering and design tools covering electrical, mechanical, thermal and radiation aspects.

The Products

Downlink Subsystems - Repeaters & Payloads

The product scope of Communication Systems comprises two key products – the Data Downlink Subsystems family and the Repeaters / Payloads including the unique configuration of a Hybrid Relay Payload featuring Laser ISL (Inter-Satellite-Link) with multi-channel Ka-Band downlink.

Data Downlink Subsystems

Tesat features a long and very successful heritage for Downlink Subsystems since more than 20 years starting with Envisat. Based on cutting-edge technology, we provide Downlink Subsystem concepts to fulfill the growing data rate requirements.

Tesat is a one-stop-shop that includes all engineering services (RF, layout, interfaces, reliability), procurement, project management, subsystem assembly, integration and test in Backnang. In addition, support for system level activities can be offered and test systems can be delivered, if requested by the customer.

Downlink Subsystems for earth observation and military missions are available in X-Band (8 - 8.4 G Hz) with QPSK and 8-PSK modulation and Ka- Band (25.5-27 G Hz) with QPSK modulation. The products are designed for LEO as well as GEO applications with a lifetime of up to 15 years.

The Facilities

Assembly. Integration. Test.

For more than 30 years Tesat-Spacecom has been involved in AIT activities on Repeater and Payload level starting from the OTS Repeater (Orbital Test Satellite) to SATCOMBw2 to the current Payload programs like Hispasat AG 1 and EDRS. The AIT area is fully equipped and staffed to perform complex assembly, integration and test operations on Downlink Subsystems and Repeaters from L-Band to V-Band.

The Integration Hall itself comprises a clean room (cl. 8) area of approximately 500 m2, of which ~250 m2 have a height of ~10 m. The hoist unit in the integration hall is a crane with a load capacity of 2,000 kg SWL and a height of about 8 m. The air lock dimensions are 3.7 m x 4.6 m.

The Mission

Based on heritage – discover the future

Power and spectrum management are important features to enable operators to reconfigure the Payload in order to adapt operational needs over lifetime of the satellite.

In the frame of the Flex INET / ONET development programs, Tesat is investigating flexible Payload configurations based on „analogue“ equipment technologies. Flexible MPMs with adjustable saturated output power are already part of our FM product portfolio. In the running H2SAT Payload Program (funded by DLR), an in-orbit-verification of such new technologies (with many innovations from German universities, research institutes and companies) is envisaged.

Roadmap of Programs