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Q#1 Antennas GATE EC 2002 MSQ +2 marks -0 marks

Consider a linear array of two half-wave dipoles A and B as shown in Figure. The dipoles are  apart and are excited in such a way that the current on element B legs that on element A by 90º in phase.

        

39.jpg

(a) Obtain the expression for the radiation pattern for the radiation pattern for  in the XY plane (i.e. )

(b) Sketch the radiation pattern obtained in (a).

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