Spaceborne S-Band Solid State Power Amplifier
This product has been discontinued
General Dynamics' space-qualified, S-Band Solid State Power Amplifier (SSPA) offers highly efficient and reliable power amplification and features an internal DC-DC power converter and voltage regulator. As a certified CMMI Level-3 provider, General Dynamics designs and manufactures high reliability space electronics designed to support any space mission. Our currently deployed 8W SSPA systems perform flawlessly in support of programs, including the Lunar Reconnaissance Orbiter (LRO), Global Precipitation Measurement (GPM), Landsat Data Continuity Mission (LDCM) and Communications, Navigation and Networking Re-Configurable testbed (CoNNeCT).
- High efficiency
- High reliability
- Small size
- Low mass
Features
The General Dynamics Radio Frequency (RF) amplifier design represents the culmination of a 50-year heritage of trusted space flight performance. This design offers lower risk and development time, improving time to mission and reducing overall lifecycle cost. This system features a DC-DC power converter and regulator designed to the unique specifications of the S-Band Solid State Power Amplifier (SSPA). Our SSPA provides analog telemetry signals operating in compression, maximizing efficiency for constant envelope modulation. The system also uses an Automatic Level Control (ALC) to maintain RF output power over temperature. Operating over the 2.2 to 2.3 GHz frequency range, the SSPA serves as a companion unit to General Dynamics' Multi-Mode Standard Transponder (MST) or operates as a stand-alone power amplifier. Gallium arsenide (GaAs) power Monolithic Microwave Integrated Circuit (MMIC) technology improves the system’s size, weight and power (SWAP) ratio, providing high efficiency, high reliability, small size, and low mass.
- 8.3 watts typical output power
- 2.2 - 2.3 GHz frequency range
- Built-in DC-DC converter and regulators
- 22 - 36v input voltage
- High power-added efficiency (27%)
- Fully space qualified and radiation tolerant
- Electromagnetic compatibility (EMC) performance qualified to MIL-STD-461C
- Output power telemetry (TLM) (optional)
- System power toggle (optional)
- Current limiting (optional)
Specifications
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S-Band Solid State Power AmplifierData Sheet
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View Document
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| Radio Frequency (RF) | Output Power: > 7 Watts (8.3 Watts typical) Output Power Variation: ± 0.25 dB over any 50 MHz band Input Power: + 8 ± 3 dBm or + 11 ± 3 dBm (selected at manufacture) Input/Output Impedance: 50 ohms lnput/VSWR: 1.5:1 maximum/output VSWR: 1.22:1 maximum Source/Load VSWR: 1.5:1 maximum Output Protection: No damage, any VSWR, any phase Spurious Outputs: < 60 dBc Harmonic Outputs: < 30 dBc RF Breakdown Margin: > 6 dB @ VSWR of < 10:1, any phase |
| User Interface | RF Input: SMA RF Output: SMA DC Power/TLM: 15-Socket Sub-D On/off Command: NDL-Triax (7mA current loop) |
| Input Power | Operating Voltage: 22 to 36 VDC Over/Under Voltage: 0 to +22, +36 to + 40 Vdc, no damage Power: 37 Watts max (31 Watts nominal) Isolation to Chassis: 1 to 100 megohms Inrush Current Limiter |
| General | Maximum Dimensions: 6.85” L x 7.3” W x 1.4” H, including mounting feet Mass: 4.35 lbs. (1.98 kg) Flight Temperature: -34°C to +66°C Vibration: 25 Grms Pyrotechnic Shock: 2500 G Altitude: Sea level to vacuum Radiation : to 100 krads (Si) |
