Direct-conversion Architecture for Naval Multi-band Satellite Communication Systems

HYPRES has developed a unique system architecture for an improved military satellite communications (MILSATCOM) receiver. This is based on direct conversion of the RF waveform to digital format using an ultrafast analog-to-digital conversion (ADC), followed by ultrafast digital processing. The proposed receiver uses both superconductor and semiconductor circuits, both digital and analog, within the same heterogeneous-temperature, hybrid technology (HTHT) system. The individual components have already been designed and are being demonstrated in other projects. In the present Phase II project, a complete architectural design will be undertaken, for several Navy shipboard platforms, to deliver maximum performance within real-world constraints. Issues of receiver performance, cryogenic packaging, power and size, system reliability, and system costs will be addressed. This will demonstrate the feasibility of such an HTHT digital SATCOM receiver incorporating multiple receive bands. Progress during this project will direct optimization of system components that are being pursued in parallel with concurrent funding. Design, fabrication, and demonstration of some critical components will be carried out during the Phase II Option. At the conclusion of the project, a detailed multi-band digital-RF transceiver system design for a chosen Navy SATCOM program will be delivered for implementation in Phase III.