Gürel, LeventChew, W. C.2016-02-082016-02-0819980272-4693http://hdl.handle.net/11693/27672Date of Conference: 21-26 June 1998Conference Name: Antennas and Propagation Society International Symposium, IEEE 1998The fast noniterative steepest descent path (SDP) algorithm for planar and quasi-planar patch geometries are discussed. The comparison of scattered fields as computed by the method of moments (MOM) and fast direct algorithm (FDA)/SDP are described. The solution times of FDA/SDP, MOM, and recursive aggregate-T-matrix algorithm (RATMA) are obtained by solving the scattering problems of increasingly larger planar arrays of patches without taking advantage of the periodicities and the symmetries of these arrays.EnglishAlgorithmsElectromagnetic wave scatteringMatrix algebraMethod of momentsProblem solvingFast direct algorithm (FDA)Recursive aggregate-T-matrix algorithm (RATMA)Steepest descent path (SDP)Antenna arraysConference Paper10.1109/APS.1998.701561