// ORBITAL LOGISTICS AND PROPULSION TERM
Transponder
A device on a satellite that receives a signal, amplifies it, and retransmits it on a different frequency, enabling communication between ground stations.
TECHNICAL DEFINITION
A transponder is a key component of a communications satellite payload that receives an uplink signal at one frequency, amplifies it, and retransmits it as a downlink signal at a different frequency, acting as a relay for telecommunications, broadcasting, and data services between ground terminals.
BACKGROUND
Space economy refers to the set of activities, industries, technologies, services, and resources that generate economic value through the space exploration, understanding, management, and exploitation of outer space.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Satellite relay
- comms relay
- repeater
- satellite channel
USAGE NOTE
The number and capacity of transponders determine a satellite's communication throughput.
DEVELOPERS
Organizations developing technology related to Transponder.
A major defense contractor and IT services provider that manufactures a wide range of radio frequency (RF) communication systems, including advanced transponders for satellites, spacecraft, and military aircraft used for command, telemetry, and data relay.
A global technology leader in the aerospace, defense, and space markets. Its division, Thales Alenia Space, is a primary manufacturer of satellite communication payloads, which are built around sophisticated transponders that receive, amplify, and re-transmit signals.
A leading manufacturer of avionics systems for commercial, defense, and space aircraft. Honeywell produces a variety of aircraft transponders, including Mode S and ADS-B compliant units that are essential for air traffic control and collision avoidance.
A subsidiary of RTX Corporation, Collins Aerospace is a major supplier of avionics and communication systems for the global aerospace industry. They design and produce advanced transponders for commercial and military aircraft, including traffic collision avoidance systems (TCAS) and IFF (Identification Friend or Foe) transponders.
A business unit of General Dynamics that specializes in secure communication and information systems. They develop and manufacture space-qualified transponders for telemetry, tracking, and command (TT&C) for satellites and deep space missions, including those used by NASA.
As a leading manufacturer of telecommunications and Earth observation satellites, Airbus designs and integrates entire communication payloads. This includes the development of high-power, reconfigurable transponders that form the core of the satellite's mission.
A global communications company that designs and builds high-capacity satellite payloads. Viasat develops the advanced digital signal processors and transponders that power its geostationary satellites, enabling high-speed broadband services.
A multinational technology company known for GPS technology, Garmin is also a dominant force in general aviation avionics. They manufacture a wide range of transponders, including panel-mounted and remote units that provide ADS-B Out capabilities for light aircraft.