The primary function of downconverters for space missions and applications is to convert higher frequency signals to lower frequency signals. The components typically include a mixer and local oscillator to perform the frequency conversion, along with filters and amplifiers to condition the signals.
They are widely used in satellite communications chains where they can adjust up- and down-link frequencies to the required mission bands. For example, an L-band downconverter may be used to convert signals in the L-band frequency range (1-2 GHz) to lower frequencies.
In this article we share some basic advice on how to choose the most suitable downconverter for your needs along with listings of systems from across the global market.
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Advice on selecting downconverters for space applications
There are several different forms of downconverter suitable for space systems, meeting the demanding requirements for compactness, reliability, and high performance in extreme environments:
Low Noise Block (LNB) downconverters: LNB downconverters are commonly used in satellite communication systems for receiving signals. They are typically compact, lightweight, and designed to operate well in the harsh environmental conditions of space.
Wideband downconverters: wideband downconverters are used in space applications in which a wide frequency range needs to be covered, such as in satellite communication and remote sensing. They are capable of handling high data rates and usually offer good sensitivity.
Digital Downconverters (DDCs): DDCs are increasingly used in space applications, especially in software-defined radio (SDR) systems. They offer flexibility and reconfigurability, making them ideal for missions where adaptability is key.
Image reject downconverters: image reject downconverters are important in space applications where signal quality is critical. They help eliminate image frequency interference, ensuring clean and reliable communication.
Choosing the right downconverter is crucial for the success of a space mission, as it directly impacts the performance and reliability of the satellite’s communication system. Here are some of the key factors that engineers should consider:
- Frequency range: ensure that the downconverter supports the required frequency range for the mission.
- Temperature range: downconverters must be able to operate within a wide temperature range to ensure continuous functionality.
- Conversion gain: the conversion gain determines how much the signal is amplified during the conversion process. Higher conversion gain is generally preferred.
- Noise figure: a lower noise figure indicates better sensitivity and signal-to-noise ratio (SNR), which is crucial for weak signal reception in space.
- Phase noise: low phase noise is important for maintaining signal integrity, especially in digital communication systems.
- Power consumption: for space missions, power-efficient components are preferred to minimize the overall power consumption of the satellite.
- Size and weight: space is limited on a satellite, so the downconverter should be compact and lightweight.
- Compatibility and integration: Ensure that the downconverter can be easily integrated into the satellite’s communication system and is compatible with other components.
- Cost: consider the cost of the downconverter in relation to the overall budget of the mission.
With these factors in mind, along with your major mission goals and requirements, you can review the downconverter options on the market in the next section to make the best choice for your needs.
Or simply contact us today with your requirements and we’ll help you reach all relevant suppliers.
Downconverters for space on the global market
This section includes a variety of downconverters available on the global market today. Click on the links to open pages with more detail on each system.
From these pages you can submit requests for quotes, documents, or further information by the supplier, and we’ll handle the request for you (find out more about how this all works here).
If you want to shortcut this process, or need some assistance refining either your specific downconverter or more general satellite communication requirements, you can instead submit an open tender and our expert procurement team will get back to you ASAP.
Cross designs and manufactures standard and custom products for the satellite communications industry.
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Advantech Wireless Technologies designs, manufactures and deploys satellite and wireless communications equipment for broadband connectivity.
Atlantic Microwave Ltd manufactures and supplies RF and Microwave equipment and components to the Satcom, Aerospace and Defense industries.
BHE is a major designer of numerous RF and microwave products and applications for mobile operators, space and aeronautics organizations worldwide.
Celestia Antwerp BV delivers innovative satellite integration solutions for a wide range of products from ground stations to test systems.
Comtech is a leading supplier of satellite bandwidth efficiency, with high-performance satellite communications ground equipment deployed globally.
Cross designs and manufactures standard and custom products for the satellite communications industry.
Data Patterns is a design, development & manufacturing house that provides safety and mission critical, high reliability electronics for aerospace.
Digisat is a leading provider of Satellite Communications Systems, Satcom Equipment, Integration, Installation, Engineering and Maintenance services.
ETL Systems designs and manufactures RF satellite signal handling equipment for teleports, broadcasters, marine and defense applications globally.
Novella Satcoms is an established supplier of high performance RF equipment and solutions for satellite earth stations and CATV systems.
Orbital Connect provides a wide range of satellite and ground communication services delivering end to end solutions to most remote locations.
Profen Communications Technologies is a leading solution provider in satellite communications and product distributors for market leading companies.
SATCOM Services provides VSAT Satellite Hardware, custom integration services and space segment solutions to a broad base of customers.
Satcom Solutions, Inc. is the leading purchaser and provider of second-hand (used) VSAT antennas and RF equipment for satellite applications.
STEP Electronics is the premier provider of satellite communications hardware, equipment, and installation solutions.
UMT LLC works as a system integrator, developer and manufacturer at the digital telecommunication and TV broadcasting market.
WORK Microwave’s satellite ground station technologies support applications within the satellite broadcast and satellite communications markets.
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