A major project currently being planned by radio astronomers around the world is the Square-Kilometre Array (SKA) [1]. Conceived to address science questions of a scale and scope that is inaccessible to current instruments, the SKA has a goal of providing a collecting area of 106 m2, two orders of magnitude greater than anything currently in existence. The major challenge to this project is the need to construct such a large collecting area at a cost that is likely to be within reach. A target of $103 m−2 has been set, about an order of magnitude less than traditional designs.