Orbital S Band Receive Only Feedhorn with Selectable Circular Polarisation

Description

The Orbital S Band Receive Only Feedhorn is suitable for general commercial and Defence telemetry applications requiring S-Band Receive (RX) with selectable LHCP or RHCP polarisation. The Orbital S Band Receive Only Feedhorn design is a prime focus scalar feed used in operations requiring satellite telemetry and data downlinks, UAV telemetry, military M-22 AMB broadcasts, and military DMSP satellites. The Orbital S Band Receive Only Feedhorn Provides is designed to provide maximum flexibility with both converted and broadband S-Band outputs enable the feedhorn to be integrated or retrofitted into a wide range of existing antenna systems.
Orbital S Band Receive Only Feedhorn Features:

• S-Band prime focus scalar feed with switchable LHCP or RHCP polarization
• Feed housing encloses S-Band cavity filters, Low Noise Amplifier (LNA) and tuneable downconverter
• Dual multi-pole cavity filters allow operation with adjacent S-Band uplink antennas
• 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)
• Pressurized 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 S Band Receive Only Feedhorn / Downconverter Specifications:

• S-Band Operating Frequency: 2200-2300 MHz
• LNA Noise Temperature: 30 K max at 230C
• Downconverter Noise Temperature: 75 K typical at 230C (includes input filter)
• Image Rejection: >60 dB
• Local Oscillator Frequency: 2130-2230 MHz, 100 kHz steps (no spectrum inversion)
• Local Oscillator Stability: OCXO < 1ppm
• Oscillator Phase Noise: -90 dBc/Hz at 10 kHz typical
• Output Frequency: 70 MHz (-3dB BW 40 MHz typ)
• Conversion Gain: 65 dB typical
• Output 1 dB Compression Point: > + 10 dBm

Orbital S Band Receive Only Feedhorn Output Specifications

• S-Band Output Frequency: 2200-2300 MHz
• S-Band Output Gain: 34 dB typical

Orbital S Band Receive Only Feedhorn Electrical, Mechanical and Environmental Specifications

• Input Voltage Frequency: 24V DC at 500mA
• Input Power / Data Connector: 8 pin MS style connector
• Operating Temperature: -400C to +550C
• S-Band IF Output: Female Type N
• S-Band RF Output: Female Type N
• Pressurisation Tube Connector: 1/4” compression fitting (supplied)
• Size: 26cm diameter, 58.4cm in length
• Weight: 13.2 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).