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E - Bibliothèque et Archives Canada

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l- Z W 3 2.5 2 - - a 1.5

l- Z W 3 2.5 2 - - a 1.5 - z - 3 U 0.5 - I I L I t 1 I 1 I O O l 0.01 1 0.02 1 0.03 I 0.04 1 0.05 RH0 1 0.06 1 0.07 1 0.08 I 0.09 0.1 Fig 3.22: Magnitude of curent distribution on a strip of width w=O. 1 k illuminated by a TEz plane wave incident at cp'=O.SO (J in Alm p in 2,). [- Multiple diffraction üTD solution, ooo MM wvith 200 segments] TEz Plane wave - m- Strip 1 O O O 00 000 0 v u L-" - - Y - - -

3.3 STRlP SURFACE CURENT USING THE MOMENT METHOD In ais section. the formulation of the EFIE and moment method solution (of the surface ainent density of a strip, illuminated by a TEz plane m e) will be derived first and the code based on this fotmulation will be described after. 3.3.1 Formulation To establish the integral equation of the geometry of Figure 3.8, the incident and scatterd tangential electric fields on the strip must be defined. Since the TG plane wave has a unity mgnetic field at the origin, the tangential fields at a point on the stflp separated by a distance p flom the origin are: J@ =O' H: = e (in the z direction) (3-7) E: = ?7dP"" X s hp' (in the r dimon) (3-8) F m equation 2.18, the scattemi tangential el-c field (in the x direction) at a certain point m on the strip is (sinœ

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