The X-Band Solid State Power Amplifier (SSPA) from General Dynamics is a space qualified SSPA that operates from 7.8 to 8.8 GHz. It delivers an output power of 17 W with an efficiency of 28%. The SSPA is based on GaAs power MMIC technology which provides high efficiency, high reliability, small size, and low mass. It has integrated DC-DC power converter and regulator that enable the SSPA to utilize synchronous rectifier technology to maximize power conversion efficiency.
The amplifier can be used as a companion unit to General Dynamics’ Small Deep Space Transponder (SDST), or it can be used as a stand-alone power amplifier. It covers deep-space and near earth frequency bands and is fully space qualified and radiation tolerant with the EMC performance qualified to MIL-STD-461.
The amplifier provides a full complement of analog telemetry signals, as well as direct access to selected functions for monitoring during subsystem and spacecraft ground testing. It operates in compression to maximize efficiency for constant envelope modulation but can be ordered with Automatic Level Control (ALC) to maintain linear operation for modulation formats such as QPSK having a variable envelope carrier. The SSPA is available in a module that measures 6.85 x 5.28 x 1.85 inches and has SMA-female connectors (optional waveguide flange output available).
