SPACE ANTENNAS / COTS
SPACE ANTENNAS / COTS
CSA-S-001-RH
CSA-S-001-RH
Active S-Band RHCP RX Omni Antenna
Active S-Band RHCP RX Omni Antenna
CSA-S-001-RH is a COTS active S-band receive antenna covering 2025 to 2110 MHz for spacecraft TT&C command uplinks. An integrated filter and LNA provide 28 dB of gain at 2.2 dB noise figure with 60 dBc of rejection at 2200 MHz, keeping the spacecraft's own downlink out of the receive chain. TRL 9, radiation tolerant to 500 krad(Si), and 140 g in a sub-1U envelope for LEO, MEO and GEO missions.
CSA-S-001-RH is a COTS active S-band receive antenna covering 2025 to 2110 MHz for spacecraft TT&C command uplinks. An integrated filter and LNA provide 28 dB of gain at 2.2 dB noise figure with 60 dBc of rejection at 2200 MHz, keeping the spacecraft's own downlink out of the receive chain. TRL 9, radiation tolerant to 500 krad(Si), and 140 g in a sub-1U envelope for LEO, MEO and GEO missions.
PRODUCT OVERVIEW
On a full-duplex S-band spacecraft the dominant interferer on the uplink is the vehicle's own transmitter. This antenna places 60 dBc of filter rejection at 2200 MHz ahead of the LNA to address it. Passive gain is 4 to 5 dBic RHCP with 2 to 3 dB axial ratio, and LNA gain is 26 to 32 dB, customisable on request. Noise figure is 2.2 dB typical and 3.5 dB maximum measured across the full operating temperature range rather than at ambient alone. Supply is 4.5 to 12 VDC at 50 to 60 mA through an SMA female interface, in an 81 x 81 x 22 mm (3.2 x 3.2 x 0.85 in) envelope at 140 g. Built for the harsh conditions of space, the sealed and vented housing addresses corona, multipaction, atomic oxygen and MMOD over a five-year LEO mission life. Qualification is to NASA GEVS (GSFC-STD-7000) with random vibration to 14.1 GRMS across -70 to +100 °C, with 500 krad(Si) radiation tolerance and no destructive single event effects observed to 37 MeV-cm²/mg. LNA-S-001 provides the amplifier alone for hardware-in-the-loop and irradiation testing.
On a full-duplex S-band spacecraft the dominant interferer on the uplink is the vehicle's own transmitter. This antenna places 60 dBc of filter rejection at 2200 MHz ahead of the LNA to address it. Passive gain is 4 to 5 dBic RHCP with 2 to 3 dB axial ratio, and LNA gain is 26 to 32 dB, customisable on request. Noise figure is 2.2 dB typical and 3.5 dB maximum measured across the full operating temperature range rather than at ambient alone. Supply is 4.5 to 12 VDC at 50 to 60 mA through an SMA female interface, in an 81 x 81 x 22 mm (3.2 x 3.2 x 0.85 in) envelope at 140 g. Built for the harsh conditions of space, the sealed and vented housing addresses corona, multipaction, atomic oxygen and MMOD over a five-year LEO mission life. Qualification is to NASA GEVS (GSFC-STD-7000) with random vibration to 14.1 GRMS across -70 to +100 °C, with 500 krad(Si) radiation tolerance and no destructive single event effects observed to 37 MeV-cm²/mg. LNA-S-001 provides the amplifier alone for hardware-in-the-loop and irradiation testing.
TECHNICAL SPECIFICATIONS
RF PERFORMANCE
FREQUENCY RANGE
2025-2120 MHz
PATTERN
Omni
POLARIZATION
RHCP
GAIN
32.5 dB
NOISE FIGURE
2.2 dB
INTEGRATION & QUALIFICATION
APPLICATION
TT&C
TRL
TRL 9
VOLTAGE
4.5-12 VDC
CURRENT
50 mA
OPERATING TEMPERATURE
-70 to +100 °C
HUMIDITY
VIBRATION
14.1 GRMS random (GSFC-STD-7000)
SHOCK
RADIATION HARDNESS (TID)
500 krad(Si)
SEE
37 MeV-cm²/mg
MASS
140 g
