“…Since the simplest possible shape of an elementary patch is a flat polygon, accurate RCS calculation for such a geometry is extremely important. A very large number of papers has been devoted to the application of various techniques, either analytical or numerical, to the RCS calculation of perfectly conducting (PEC), polygonal flat plates or disks [ Ross , 1966; Gordon , 1975; Hodge , 1980; Sikta et al ., 1983; Michaeli , 1987; Atkins and Shin , 1988; Pelosi et al ., 1990; Breinbjerg , 1992; Mahadevan et al ., 1992; Fenn and Lutz , 1993; Gordon , 1994; Johansen and Breinbjerg , 1995; Kobayashi and Hongo , 1997]. The analysis has been extended to dielectric flat plates and disks [ Le Vine , 1984; Willis et al ., 1988; Pelosi et al ., 2000], coated PEC flat plates [ Bhattacharyya and Tandon , 1984; Wu et al ., 1995; Corona et al ., 2000], or even curved plates [ Medgyesi and Putnam , 1990; Kobayashi et al , 2000; Ying , 2001].…”