Orbital Dual Band L Band & X Band EOS DB Feedhorn

Description

The Orbital Dual Band L Band & X Band EOS DB Feedhorn is a concentric L band & X band feedhorn with downconverters in a heavy-duty metal enclosure for reception of L Band & X band EOS-DB satellites. The Orbital Dual Band L Band & X Band EOS DB Feedhorn provides maximum flexibility and efficiency because of its ability to receive simultaneous downlinks in L Band & X Band.
Orbital Dual Band L Band & X Band EOS DB Feedhorn Applications:

• Reception of X- Band and L- Band EOS-DB satellites, including satellites that downlink simultaneously in L band and X Band

Orbital Dual Band L Band & X Band EOS DB Feedhorn Features:

• X- Band scalar feed and L- Band helix feed operating in right-hand circular system polarization
• Feed housing encloses X- Band LNA, tuneable downconverter, and L- Band block downconverter
• Heavy-duty aluminium enclosure, powder coated and assembled with stainless steel fasteners to eliminate external corrosion
• Feed is controlled over the Orbital Data Bus (ODB)
• Pressurised feed with temperature and humidity sensors
• Built in purge valve to ventilate the entire antenna when excess humidity is detected in the electrical cabinet or feed

Orbital Dual Band L Band & X Band EOS DB Feedhorn Specifications:
X- Band Feedhorn / Downconverter Specifications:

• X- Band Operating Frequency: 7700 – 8500 MHz
• LNA Noise Temperature: 45 K max at 23°C
• Local Oscillator Frequency: 6980-7780 MHz, 1 KHz steps (no spectrum inversion)
• Local Oscillator Stability: ± 5ppm
• Oscillator Phase Noise: -100 dBc/Hz at 10 KHz typical
• Output Frequency: 720 MHz (3 dB BW – 120 MHz)
• IF Filter: 4 pole tubular, 200M Hz BW
• Conversion Gain: 65 dB typical
• Output 1 dB Compression Point: > +10 dBm

L- Band Feedhorn / Downconverter Specifications:

• L- Band Operating Frequency: 1682 – 1710 MHz
• L- Band converter noise temperature: 100 K typical
• Local Oscillator Frequency: 1562.5 MHz
• Local Oscillator Stability: ± 2.5 ppm
• Oscillator Phase Noise: -95 dBc/Hz at 10 KHz typical
• Output Frequency: 119.5 – 147.5 MHz, (3 dB BW – 30 MHz)
• Filter: 6 pole cavity pre-LNB filter, 4 pole dielectric post filter
• Conversion Gain: 55 dB typical
• Output 1 dB Compression Point: > +10 dBm

Electrical, Mechanical, and Environmental Specifications:

• Input Voltage Frequency: 24V DC at 1A
• Input Power/Data Connector: 6 pin MS style connector
• Operating Temperature: -40°C to +55°C
• X- Band and L- Band IF Outputs: Female Type N
• Pressurisation Tube Connector: 1/4” compression fitting (supplied)
• Size: 25cm in diameter x 38cm length
• Weight: 7 kg

Orbital Systems provides a wide range of antenna feeds for Earth Observation Satellites (EOS) Direct Broadcast (DB), Telemetry, Tracking and Control (TT&C), and general telemetry applications. All Orbital feeds are made of the highest quality materials and are enclosed in a heavy duty aluminium enclosure, powder coated and assembled with stainless steel fasteners to eliminate external corrosion. Orbital feeds are pressurized with temperature and humidity sensors, and built in purge valves to ventilate the feed when excess humidity is detected. STEP Electronics is the Australian and New Zealand distributor of Orbital Systems (now CPI SAT).