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 #3 d. # 4
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 #3 d. # 4
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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lesson:Antenna Theory
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F008abc60-2973-4c3b-95b0-a357ba619084%2F0437ee56-d462-4ad6-8175-f19a44de3d3c%2Fn329xb_processed.jpeg&w=3840&q=75)
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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