Abstract: A hybrid method with the GTO, PO and MM is used to analyze the scattering of an object composed of cylinder a'nd wedges with surface impedance loading The solution of. current distribution on the perfect conductive surface of the object is discussed by using high frequency method and the equivalent current distribution on the impedance loading surface is also discussed by using MM. According to current distributions, the scattering field is obtained. Compared with MM, the hybrid method has the advantages of saving memories of computer and faster speed for computation. The numerical calculation shows that the results of both methods have good agreements.

Key words: hybrid method, composed scattering, surface impedance loading