Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 13, Problem 6TFQ
The upper and lower cutoff frequencies of a band-stop filter determine the bandwidth.
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I need a detailed solution to a
problem.
The far-zone electric field intensity (array factor) of an end-fire two-element array
antenna, placed along the z-axis and radiating into free-space, is given by
E=cos (cos - 1)
Find the directivity using
(a) Kraus' approximate formula
(b) the DIRECTIVITY computer program at the end of this chapter
Repeat Problem 2.19 when
E = cos
-jkr
0505π
$[
(cos + 1)
(a). Elmax = Cost (case-1)] | max"
= 1 at 8-0°.
0.707 Emax = 0.707.(1) = cos [(cose,-1)]
(cose-1) =
± 0,= {Cos' (2)
= does not exist
(105(0)=
90° = rad.
Bir
Do≈ 4T
ar=2() =
=
Bar
4-1-273 = 1.049 dB
T₂
a. Elmax = cos((cose +1)),
0.707 = cos (Close,+1))
= 1
at 6 = π
Imax
(Cose+1)=== G₁ = cos(-2) does not exist.
Girar=2()=π.
4T
\cos (0) + 90° + rad
Do≈ = +=1.273=1.049dB
IT 2
I need an expert mathematical solution.
The E-field pattern of an antenna. independent of , varies as follows:
0° ≤ 0≤ 45°
E = 0
45°
{1
90°
90° < 0 ≤ 180°
(a) What is the directivity of this antenna?
(b) What is the radiation resistance of the antenna at 200 m from it if the field is equal
to 10 V/m (rms) for Ø
=
0° at that distance and the terminal current is 5 A (rms)?
Chapter 13 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 13 - A series RLC circuit can have a higher voltage...Ch. 13 - The impedance of a series RLC circuit is dependent...Ch. 13 - Above the resonant frequency, series resonant...Ch. 13 - Prob. 4TFQCh. 13 - Prob. 5TFQCh. 13 - The upper and lower cutoff frequencies of a...Ch. 13 - Prob. 7TFQCh. 13 - The Q of a band-pass filter does not affect the...Ch. 13 - Prob. 9TFQCh. 13 - Prob. 10TFQ
Ch. 13 - Prob. 1STCh. 13 - The phase angle of a series RLC circuit at...Ch. 13 - The impedance at the resonant frequency of a...Ch. 13 - In a series RLC circuit that is operating below...Ch. 13 - Prob. 5STCh. 13 - Prob. 6STCh. 13 - Prob. 7STCh. 13 - Prob. 8STCh. 13 - Prob. 9STCh. 13 - Prob. 10STCh. 13 - Prob. 11STCh. 13 - Prob. 12STCh. 13 - A certain series RLC circuit operates at a...Ch. 13 - Find the impedance in Figure 13-66.Ch. 13 - If the frequency of the source voltage in Figure...Ch. 13 - For the circuit in figure 13-66, find Itot,VR,VL,...Ch. 13 - Draw the voltage phasor diagram for the circuit in...Ch. 13 - Analyze the circuit in Figure 13-67 for the...Ch. 13 - For the circuit in Figure 13-66, is the resonant...Ch. 13 - For the circuit in Figure 13-68, determine the...Ch. 13 - Find XL,XC,Z, and I at the resonant frequency in...Ch. 13 - A certain series resonant circuit has a maximum...Ch. 13 - For the RLC circuit in Figure 13-69, determine the...Ch. 13 - What is the value of the current at the half-power...Ch. 13 - Determine the resonant frequency for each filter...Ch. 13 - FIGURE 13-70 Assuming that the coils in Figure...Ch. 13 - Determine fr and BW for each filter in Figure...Ch. 13 - Find the total impedance of the circuit in Figure...Ch. 13 - Is the circuit in Figure 13-72 capacitive or...Ch. 13 - For the circuit in Figure 13-72, find all the...Ch. 13 - Find the total impedence for the circuit in Figure...Ch. 13 - What is the impedance of an ideal parallel...Ch. 13 - Prob. 21PCh. 13 - How much current is drawn from the source in...Ch. 13 - At resonance, XL=2K and RW=25 in a parallel...Ch. 13 - If the lower cutoff frequency is 2400 Hz and the...Ch. 13 - In a certain resonant circuit, the power to the...Ch. 13 - What values of L and C should be used in a tank...Ch. 13 - Prob. 27PCh. 13 - A parallel resonant band-stop filter is needed to...Ch. 13 - Prob. 29PCh. 13 - Prob. 30PCh. 13 - Prob. 31PCh. 13 - Determine whether there is a value of C that will...Ch. 13 - If the value of C is 0.22F, how much current is...Ch. 13 - Determine the resonant frequencies in Figure 13-77...Ch. 13 - Prob. 35PCh. 13 - Prob. 36PCh. 13 - Prob. 37PCh. 13 - Prob. 39PCh. 13 - Prob. 40PCh. 13 - Prob. 41PCh. 13 - Open file P13-42. Determine if there is a fault...Ch. 13 - Prob. 43P
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