(b) Figure Q3. (b) shows a beam antenna consisting of a dipole, a reflector, and a director. Design the beam antenna given that it is cut for a frequency of 200 MHz and assuming a velocity coefficient of 0.85. The length of the reflector is 5% more than the length of the dipole and the length of the director is 5% less than the length of the dipole.
(b) Figure Q3. (b) shows a beam antenna consisting of a dipole, a reflector, and a director. Design the beam antenna given that it is cut for a frequency of 200 MHz and assuming a velocity coefficient of 0.85. The length of the reflector is 5% more than the length of the dipole and the length of the director is 5% less than the length of the dipole.
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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Solve B part only in 30 min plz
Transcribed Image Text:Question 3
(a) A television receiver's folded dipole antenna has an impedance of 600 . If a RG-6
coaxial (75 22) coaxial cable is used, calculate the ratio required to match the cable
and the antenna.
(b) Figure Q3. (b) shows a beam antenna consisting of a dipole, a reflector, and a director.
Design the beam antenna given that it is cut for a frequency of 200 MHz and assuming
a velocity coefficient of 0.85. The length of the reflector is 5% more than the length of
the dipole and the length of the director is 5% less than the length of the dipole.
0.15
Figure Q3(b)
(c) A carrier signal with 2.8 V at 400 kHz is amplitude modulated with a sinusoidal signal.
k Calculate the amplitude of the message signal given that the modulation index was
65%.
ii. Calculate the frequency of the message signal given that the upper-sideband and
lower-sideband are set at 450 kHz and 350 kHz, respectively.
signal waveform and highlight the
iii.
Sketch the amplitude modulated
instantaneous voltage at t= 18 us.
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