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E - Bibliothèque et Archives Canada

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4.5 5 1 1 1 I - I 1 1 TG

4.5 5 1 1 1 I - I 1 1 TG plane wavt Fimre 3.30: Magnitude of cunent density (J in Aim) on a square qlinder il1uminated by a TEz plane wve at an angle of incidence 01 60 ' (ka= 1. a=O. 159 1 3. ). [- üTD. ooo MM ] -

RECTANGULAR CYLlNDER SURFACE CURRENT USlNG THE MOMENT METHOO In this the problem depicted in Figure 3.23 will be solved by the moment method. First, and to be able to establish the EFIE, the formulation of the incident and scattered fields is dom followad by the EFlE moment mahod solution description. At tha end. the created code is describeci. 3.5.1 Incident Field Formulrblon The EFIE is used here even if it is the TEz case (mbr to Figure 3.23). Sinœ aie incident TEr plane wve has a unit magnitude magnetic Celd at the origin. eloewhere the incident field is at a point (x,y): -jk(-x ais 9'-y sin 0') ~'(x, y) = e The incident electric field is noml to bdh H and t and has an x and y component. They am at a certain point @.y) YM-X-*Y #) E: = x sinp'xe (3.45) 3.5.2 Scatbmâ Field Formulation For the 2-0 TG scattering case, equation 2.18 gives the x and y cornponent of the scattend eladrie Celd due to the surface cumnt on a plab. This geometry is shown in Figure 3.31a.The axis of the plate coordinates sysbm can k rotated 90' like in the case depidad in 3.31b so that the plate is on the y axh. In such a

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