Pulsar-STX datasheet Product enquiry Pulsar-STX cad model

Nanosatellite Transmitter

Our modular solutions are built for compatibility and adaptability. The PULSAR-STX and PULSAR-STXC are compact S-Band transmitters designed for CubeSat missions operating at amateur and commercial frequencies respectively. The PULSAR-STX/C solution is compatible with our S-Band Patch Antenna, the Pulsar-SANT, designed to be mounted on the nadir facing side of a CubeSat.

The low power consumption PULSAR-STX solution operates at amateur and commercial bands respectively and is user programmable within bands. This solution has low power requirements with < 5 W (for maximum RF power output) and is powered from unregulated battery bus or regulated 5V.

The transmitters implement O/QPSK modulation with transmission data rates of up to 2 Mbps. The transmitters are ideal for space missions where a high data rate downlink is required. They implement an open network encoding scheme based on the IntelSAT IESS-308 specification which allows this product to be used with low-cost commercial satellite demodulators.

The transmitter implements QPSK modulation with transmission data rates of up to 2 Mbps. It utilises an open network encoding scheme based on the IntelSAT IESS-308 specification which allows this product to be used with low-cost commercial satellite receivers. The transmitter is ideal for space missions where a high data rate downlink is required. The PULSAR-STX solutions have been tried, tested and trusted on an array of on orbit missions proving to be not only reliable but efficient. The PULSAR-STX was part
of the UKube-1 mission, the UK Space Agency’s first national spacecraft. These transmitters are compatible with our S-Band Patch Antenna, Pulsar-SANT.

These solutions are supplied with user manuals, flight boards and STEP files for seemless system integration.

Power

The PULSAR-STX/C solution is compatible with our S-Band Patch Antenna. A nadir facing S-Band patch antenna can also be incorporated into the CubeSat design. Its small size, low profile, rugged design and high directionality make it an excellent addition to the system. The S-Band patch antenna is designed to be mounted on the
nadir facing side of a CubeSat. A wide beamwidth ensures satellite communication through a wide range of elevation angles. It is machined from solid aluminium

Frequencies

The PULSAR-STXC and PULSARSTX supports commercial (2.2 – 2.3 GHz) and amateur (2.4 – 2.45 GHz) bands respectively, and is user programmable within the bands.

Reliability

The PULSAR-STXC and PULSARSTX supports commercial (2.2 – 2.3 GHz) and amateur (2.4 – 2.45 GHz) bands respectively, and is user programmable within the bands.

Why the PULSAR-STX?

  • Low power consumption
  • Total power consumption < 5 W (for maximum RF power output)
  • Powered from unregulated battery bus or regulated 5V
  • Transmission data rates up to 2 Mbps
  • With Full, ½, ¼ and ⅛ rate modes
  • Support for commercial (2.2 – 2.3 GHz) and amateur (2.4– 2.45 GHz) bands
  • User programmable within bands
  • Industry standard encoding and modulation techniques
  • Compatible with low-cost commercial demodulators
  • Based on IntelSAT IESS-308
  • QPSK or OQPSK
  • Transmit output power from 24 dBm to 30 dBm, adjustable in 2 dB steps
  • Compatible with our S-Band Patch Antenna
  • A range of high-performance PULSAR antennas available
  • Supports both amateur and commercial bands
  • Compatible with all AAC Clyde Space Zaphod Structures

 

 

Technical Specifications

General
Temperature -25°C to +51°C
Power < 5 W
Voltage 6 V – 12 V (5 V alternative)
Mass < 100 g
TX SNR 20 dB
Frequency 2.2 GHz – 2.3 GHz (PULSAR-STXC) 2.4 GHz – 2.45 GHz (PULSAR-STX)
RF Power 24 - 30 dBm (1 W RF) in 2 dB steps
Channel Spacing 500 kHz
Spurious Response < -60 dBc
Design Life 2 years in LEO

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