tudes of elements #1 and #2 are +1 and the amplitudes of elements #3 and #4 are -1 (or 180 degrees out of phase with #1 and #2), find (a) the array factor in simplified form (b) all the nulls when d = N2 | %3D #2 d # 1 d/2 d/2 + #3 d # 4

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Solve the this problem and drawing the radiation patern.

lesson: Antenna Propagation

6.5. Four isotropic sources are placed along the z-axis as shown. Assuming that the ampli-
tudes of elements #1 and #2 are +1 and the amplitudes of elements #3 and #4 are
1 (or 180 degrees out of phase with #1 and #2), find
(a) the array factor in simplified form
(b) all the nulls when d
N2
#2
d
#1
d/2
主
d/2
# 3
d
# 4
Transcribed Image Text:6.5. Four isotropic sources are placed along the z-axis as shown. Assuming that the ampli- tudes of elements #1 and #2 are +1 and the amplitudes of elements #3 and #4 are 1 (or 180 degrees out of phase with #1 and #2), find (a) the array factor in simplified form (b) all the nulls when d N2 #2 d #1 d/2 主 d/2 # 3 d # 4
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