1
Walter L Bloss, Eric K Hall II, David A Ksienski, James P McKay: Heptagonal antenna array system. The Aerospace Corporation, Ocean Law, Paul D Chancellor, May 4, 2010: US07710346 (73 worldwide citation)

An antenna system includes a heptagonal antenna array having one center antenna element and seven circumferentially surrounding antenna elements offering improved near and far sidelobe rejection, which is well suited for mechanically-gimbaled and time delayed electrical steering antenna applications ...


2
Walter L Bloss, Eric K Hall II, David A Ksienski, James P McKay: Heptagonal antenna array system. Carole A Mulchinski, The Aerospace Corporation, January 1, 2009: US20090002249-A1

An antenna system includes a heptagonal antenna array having one center antenna element and seven circumferentially surrounding antenna elements offering improved near and far sidelobe rejection, which is well suited for mechanically-gimbaled and time delayed electrical steering antenna applications ...