Systems and methods for providing a reconfigurable groundplane are provided. In one embodiment, the invention relates to an antenna assembly having a reconfigurable groundplane, the assembly including a radio frequency (RF) feed, a plurality of radiating elements, a plurality of interconnects, each coupling one of the plurality of radiating elements to the RF feed, a first groundplane positioned between the RF feed and the plurality of radiating elements, a second groundplane positioned between the RF feed and the plurality of radiating elements, the second groundplane including at least one cavity for enclosing a liquid metal.