Transponder vs Repeater-Difference between Transponder and Repeater

This page compares Transponder vs Repeater and mentions difference between Transponder and Repeater.

Satellite Transponder


Following are the basic functions of a transponder.
• It does frequency translation i.e. converts frequency from one band to the other band. As shown in the figure-1 C-band transponder converts frequency in 6 GHz band to frequency in 4 GHz band range.
• It does amplification of the input signal to provide amplified output to withstand against path loss and other losses incurred due to system elements.



Following are the basic functions of a repeater.
• It does only power amplification of the input signal and retransmits the amplified signal.
• It does not perform any frequency translation and hence RF components such as RF mixers are not needed.
• Figure-2 depicts typical repeater used in the LTE system.

Satellite Related Links

Main Page   About satellite   Bands   Parts   Orbits   Services   Types   capacity allocations   network configurations   Applications   Remote sensing   VSAT basics   FDMA versus TDMA versus CDMA  SCPC  MCPC 

What is Difference between

difference between FDM and OFDM
Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
Bluetooth vs zigbee
Fixed wimax vs mobile

RF and Wireless Terminologies