Key highlights

EnduroSat’s X-Band 2x2 Patch Array Antenna is a circularly polarized, four-patch array for CubeSat and SmallSat high-rate downlink. By combining four radiating patches it delivers more than 12 dBi of gain across the 8025–8400 MHz X-band while keeping a compact 60 x 60 mm footprint and 23.15 g mass, so it mounts easily on a single satellite face.

The antenna is available in right-hand or left-hand circular polarization and ships with an SMP RF connector for direct transmitter integration. It handles up to 4 W of RF input across a wide −40 to +125 °C range and is qualified for a 5-year mission lifetime under ESA ECSS-E-ST-10-03C and NASA GEVS GSFC-STD-7000A, covering random and sinusoidal vibration, shock, and thermal cycling.

Applications

High-rate payload data downlink for CubeSats and SmallSats
Earth observation and imaging missions needing moderate-gain X-band
Missions where a 2x2 array balances gain against accommodation versus a single patch
LEO missions requiring space-qualified circularly polarized antennas

Key features

Configuration:
2x2 (four-patch) array
Gain:
>12 dBi over operating bandwidth
Half-power beam width:
40°
Frequency range:
8025–8400 MHz
Polarization:
RHCP or LHCP (choice of rotation direction)
RF connector:
SMP
RF power handling:
up to 4 W
Mounting:
X/Y (preferred) or Z
Operating temperature:
−40 °C to +125 °C
Mass:
23.15 g
Dimensions:
60 × 60 × 7.04 mm
Qualification:
ESA ECSS-E-ST-10-03C and NASA GEVS GSFC-STD-7000A; 5-year mission lifetime

Flight heritage

The EnduroSat X-band 2x2 Patch Array Antenna has achieved flight heritage.

Testing & qualification

A full campaign of tests at qualification level has been performed on a qualification engineering model: qualification tests, level and duration tests were performed following the ESA standard ECSS-E-ST-10-03C and GEVS standard GSFC-STD-7000A. Tests include: random vibration, sinusoidal vibration, pyroshock test, thermal cycling and thermal vacuum.

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Last updated: 2026-06-27