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S-Band

Communications TT&C + ISL Payload

CesiumAstro’s S-Band Communications Subsystem is a turnkey solution supporting low-Earth orbit (LEO) satellites for either inter-satellite link(ISL) or telemetry, tracking, and command (TT&C) applications. The subsystem consists of the SDR-1001 Software-Defined Radio, SBC-1461 Single-Board Computer, two ANT-2SF1 S-Band Antennas, and all necessary harnessing, requiring only a DC power connection and digital control from the spacecraft.

Combine with CesiumAstro's PCU-2812 Power Conditioning Unit [LINK: https://www.cesiumastro.com/products/pcu-2812] to create a complete system.

Key Features

Dual-Function TT&C and ISL

Supports S-band TT&C and inter-satellite crosslink in a single antenna.

Dedicated TT&C Receive Path

Always-on receive path allows for continued monitoring of command signals while using the transmit patch for ISL functions.

Hemispherical Wide-Beam Patch

Wide 3 dB beamwidth enables 360° coverage of the spacecraft with strategically placed antennas.

Active Antenna for Improved Link

Integrated power amplifier for transmit and low-noise amplifier behind the antenna element enhance performance.

Multi-Mission Flight-Ready Design

Suitable for LEO and cislunar missions supporting standard frequencies and challenging environments.

Software-Defined Functionality

Uses SDR-1001 to support multiple software-enabled functions controlled through serial interfaces.

Product Specifications

TT&C Mode
Tx 2.200 GHz to 2.300 GHz
Rx 2.025 GHz to 2.120 GHz
ISL Mode
Tx 2.200 GHz to 2.300 GHz
Rx 2.200 GHz to 2.300 GHz*
Mass
ANT-2SF1 400 g
SDR-1001 100 g
G/T
Tx 27 cm x 23 cm x 16 cm
Rx 18 cm x 15.5 cm x 15.5 cm
EIRP
Tx 14.5 kg
Rx 7 kg
Polarization
7 to 12 years in LEO
at 1000 km
Digital Interface
-24 °C to 61 °C
Operational
DC Power Interface
45 dBW to 49 dBW
aggregate at boresight
Supported Data Rates
125 kbps, 250 kbps,
500 kbps, 1 Mbps
SDR-1001 supports rates beyond 100 Mb/s
*ISL Rx blocked when transmitting TT&C or ISL

Design descriptions are important. They can help a client visualize your design and make a decision about whether to hire you. Here are tips for writing great design descriptions: 1. Use active and emotive language when describing the design.

VIEW SPECIFICATIONS

Design descriptions are important. They can help a client visualize your design and make a decision about whether to hire you. Here are tips for writing great design descriptions: 1. Use active and emotive language when describing the design.

VIEW SPECIFICATIONS

Core Products

Additional Resources

A full suite of documentation is available to support integration of S-Band Payload into your mission. Our team stands ready to support you. Contact us for technical specifications or to discuss your programming challenges.

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