Abstract
Vast Satcom Antenna (VASANT) is an ongoing system and business case development study for a very large radio-frequency antenna (>>40m diameter) assembled and/or fabricated in space. Such an antenna would be enabling for radical new commercial satcom services to complement the coming broadband satcom constellations. The disruptive capabilities from such a high gain, high bandwidth antenna include potentially building penetration (at VHF) and support for very compact, omni-directional user terminals.