X-Band Transmitter
Plan-S (Connecta)
The X-Band Transmitter provides reliable, high-throughput downlink for LEO missions with adaptive modulation, DVB-S2 coding, and a modular architecture.
Typed specifications35 values
Discloses 9 of 13 fields engineers filter by in this category (category median 3).
- Frequency band
- X datasheet p.0 X TX
- Frequency range
- 8 025–8 400 MHz datasheet p.2
- Envelope (L×W×H)
- Main: 126 x 128 x 42.5 mm; PA: 82.5 x 90 x 25 mm datasheet p.2 126 x 128 x 42.5 mm Main | 82.5 x 90 x 25 mm PA
- TX RF output power
- 2 W Configurable · datasheet p.2 2 W max · configurable | 2 W max · configurable, up to
- Data rate
- 425 000 kbps using DVB-S2 compliant coding · datasheet p.1 425 000 kbps max · TX, DVB-S2 compliant coding
- Modulation
- QPSK, 8PSK, 16APSK, 32APSK datasheet p.2 8PSK | 16APSK | 32APSK
- Supply voltage
- 10.5–28 V datasheet p.2
- Power consumption
- 32 W nom. · full transmit mode (~) · datasheet p.2 32 W Full Transmit Mode
- Data interface
- Ethernet datasheet p.2 other SERDES | LVDS | CAN
- Operating temperature
- -20 °C product page -20–50 °C
- Function
- transmitter datasheet p.1
- Link use
- payload data downlink datasheet p.1
- Link protocol
- CCSDS CCSDS Compliant · datasheet p.2 DVB-S2 DVB-S2 Compliant | CCSDS
- Power draw, transmit
- 32 W nom. · ~32 W (Full Transmit Mode) · datasheet p.2
- Flight heritage
- demonstrated on 1 Satellite datasheet p.2
- Satellite class
- CubeSat datasheet p.1 microsat 10-100 kg
- Missions flown
- 1 flight heritage demonstrated on 1 Satellite · datasheet p.2
- Duplex
- simplex TX only · datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier11 lines, in the manufacturer's own wording
- Frequency range
- 8025 – 8400 MHz
- RF output power
- Up to 33 dBm (in-flight configurable)
- Modulation
- QPSK, 8PSK, 16APSK, 32APSK
- Data rate
- 425 Mb/s
- Frequency stability
- ±1 ppm (per year) ±3 ppm (10 years)
- Supply voltage
- 10.5-28V
- Interfaces
- SERDES, CAN, LVDS, Ethernet
- Power consumption
- ~32 W (transmit mode)
- Dimensions
- Main Module: 126*128*42.5 mm
- Dimensions (2)
- Power Amplifier Module: 82.5*90*25 mm
- Operating temperature
- -20°C +50°C
About
The X-Band Transmitter is designed for LEO missions requiring high-rate downlink, dependable on-orbit performance, and integration-ready hardware. It ensures payload data reaches the ground efficiently and predictably, supporting 425 Mb/s throughput. Developed by Plan-S, it addresses the high data-rate demands of LEO satellites by combining X-band operation in the 8.025–8.4 GHz band, flexible modulation and coding options (QPSK, 8PSK, 16APSK, 32APSK), and integration-friendly electrical interfaces. The transmitter features in-flight configurable output power, making it suitable for both single missions and scalable constellations that require repeatable, production-ready downlink performance. It offers configuration options to align with link budget, thermal constraints, and mission throughput targets.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.