Mission typeCommunication
Mission duration15 years (estimated)
Spacecraft properties
BusI-3K Bus
ManufacturerISRO Satellite Centre
Space Applications Centre
Power2 solar array batteries
Start of mission
Launch date2024 (planned)[2]
RocketLVM 3[3]
Launch siteSatish Dhawan SLP
Orbital parameters
Reference systemGeocentric
Longitude55° East[citation needed]

GSAT-20 is a communication satellite jointly being developed by Indian Space Research Organisation Satellite Centre and Liquid Propulsion Systems Centre[4] and will be launched by ISRO. GSAT-20 will be a continuation of GSAT series of communication satellites. The satellite is intended to add data transmission capacity to the communication infrastructure required by Smart Cities Mission of India.

It will be the first fully Electric Propulsion/EP enabled satellite which can be five to six times more efficient than chemical-based propulsion.[4] It will be the first ISRO made satellite to move from Geostationary transfer orbit to Geosynchronous orbit using Electric Propulsion.[5]


The satellite features a Ka-band high-throughput communications payload with 70 Gbit/s[6] throughput utilizing 40 beams.[7] Each beam will have 2 polarisations, effectively making them 80 beams.[8]


The satellite is expected to be launched in 2024 on an LVM 3 launch vehicle.[2][9][3]

See also


  1. ^ "Annual Report 2017-18, Department of Space". Department of Space, Government of India. Retrieved 13 February 2018.
  2. ^ a b "ISRO planning to launch second development SSLV flight in Feb: S Somanath". Mint. 4 January 2023. Retrieved 6 January 2023. To facilitate in-flight connectivity for automobile services using the Ka-band the space agency is planning to launch the GSAT-20 high throughput satellite next year.
  3. ^ a b "Annual Report 2018" (PDF). ISRO. Retrieved 28 May 2019.
  4. ^ a b D.S, Madhumathi (1 May 2017). "GSAT-9 heralds cost-saving electric propulsion". The Hindu. Bengaluru. The Hindu. Retrieved 27 May 2017.
  5. ^ RAMACHANDRAN, R. (26 June 2017). "ISRO's Mk III Launched a Little-Known Instrument Called GRASP – This Is What It Does". The Wire. Bengaluru. The Wire. Retrieved 26 June 2017.
  6. ^ Nair, Avinash (17 May 2017). "ISRO's GSAT-trio to usher in high-speed internet era". The Indian Express. Ahmedabad. Retrieved 27 May 2017.
  7. ^ "GSAT-20". Retrieved 27 May 2017.
  8. ^ Vasudeva, Akshay (22 May 2017). "India to enter high-speed internet era with Isro's new satellites". India: Archived from the original on 21 January 2018. Retrieved 27 May 2017.
  9. ^ "Coming soon, higher internet speeds". @businessline. Retrieved 16 November 2018.