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Unformatted text preview: the xz plane and the xy plane for d = /4. Question 3 (a) Two halfwave dipoles are placed along the x axis and with their axes along the z axis as shown below. If the dipoles are fed by currents I and j e I for dipole #1 and #2, respectively, and the separation between them is half wavelength ( d = λ /2), find the normalized array factor for this array in the xy plane. d #1 #2 x z d = λ /2 y x Dipoles #1 #2 2 (b) Now four halfwave dipoles are placed at the four corners of a square with side length equal to λ /2 as shown in the following figure. The axes of the dipoles are along the z axis. If the dipoles are fed with currents I , 2 π j e I , j e I , and 2 3 j e I for dipole #1, #2, #3, and #4, respectively, find the array factor for this array in the xy plane. d = λ /2 y x d = λ /2 Dipoles #1 #2 #4 #3...
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This note was uploaded on 10/21/2011 for the course EE 4101 taught by Professor Yeotatsoon during the Spring '11 term at National University of Singapore.
 Spring '11
 YeoTatSoon
 Phase Shift

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