A modular wideband antenna element for connection to a feed network. There is a ground plane, and first and second flared fins above the ground plane. The fins each define a connection location that is relatively close to the ground plane and tapering to a free end located farther from the ground plane. The connection location of the first fin is electrically coupled to the feed network and the connection location of the second fin is electrically coupled to the ground plane. There are one or more additional first traces electrically connecting the first fin to the ground plane and one or more additional second traces electrically connecting the second fin to the ground plane.