transponder

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transponder

[tranz′pän·dər]
(communications)
A transmitter-receiver capable of accepting the challenge of an interrogator and automatically transmitting an appropriate reply.
A receiver-transmitter, such as on satellites, which receives a transmission and retransmits it at another radio frequency.

transponder

A receiver/transmitter that will generate a reply signal upon proper interrogation; the interrogation and reply being on different frequencies (ICAO). The transponder may be ground-based or be in an aircraft. It also could be the airborne radar beacon receiver/transmitter portion of the air traffic control radar beacon system (ATCRBS), which automatically receives radio signals from interrogators on the ground and selectively replies with a specific reply pulse, or pulse group, only to those interrogations received on the mode to which it is set to respond.

transponder

A receiver/transmitter on a communications satellite. It receives a microwave signal from earth (uplink), amplifies it and retransmits it back to earth at a different frequency (downlink). A satellite has several transponders.
References in periodicals archive ?
Table 64: Middle East/African Recent Past, Current & Future Analysis for Satellite Transponders by Application Areas - Broadcast, Trunking, Networking, and Reserve Markets Independently Analyzed with Annual Demand in Number of 36 MHz Transponder Equivalents for Years 2000 through 2010 (includes corresponding Graph/Chart) III-75
RFID TRANSPONDER MARKET SUMMARY OBSERVATIONS AND COMMENTS
CoreOptics distortion tolerant 10 Gb/s transponder product using MLSE technology is clearly a cost effective way to reduce the CAPEX for the next generation network builds while enabling a significant tolerance against Chromatic and Polarization Mode Dispersions.
Performance information available from transponders include upstream/downstream RF frequencies and power levels, modulation, bandwidth, upstream packet loss rate, pre/post FEC error rates, and downstream signal-to-noise and modulation error ratios (SNR/MER) that are used to gauge the health of a digitally modulated carrier signal.
Developed by Civcom and ECI, this new transponder will enable ECI's customers to reduce costs and experience performance benefits that full C-band tunable lasers provide for both metro and long haul networks.
Electroline status-monitoring transponders also measure and store network and element metrics in the transponder's management information base (MIB), which can be queried by Minacom's DirectReach(R) test agent for cable transponders.
AM Networks enables VoIP and other digital services by increasing network reliability while lowering operating costs, with a comprehensive line of status and performance monitoring solutions for the Broadband industry, including DOCSIS transponders, Omni2000(TM) Element Management Software and the BOSS(TM) Power Management Suite.
With options for amplifiers, transponders and Reconfigurable Optical Add/Drop Multiplexers (OADMs/ROADMs), the SURPASS family of transparent optical network solutions - including the SURPASS hiT 7500 DWDM platform - helps service providers to make the most of application deployments.
This mission will be supported by a payload consisting of 6 active Ku-band transponders and an additional Ka-band transponder for inter-connections between Africa and Europe.
AMC-12 is a high-powered C-band satellite with seventy-two 36 MHz transponders organized into three regional beams: North America, South America and Europe/Middle East/Africa.
Based on TeraSea's breakthrough FTDB(TM) technology enabling the design of 10 Gb/s, FronTera transponders can reach over 200 km transmission without dispersion compensation.
Currently 10Gb/s transponder modules don't necessarily interoperate or act as functional replacements," said Karl Gass of Sandia National Laboratories, and OIF Physical Layer User Group chair.