Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 11, Problem 9TFQ
To determine
Whether the statement is true or false.
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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)?
I need an expert mathematical solution.
The normalized far-zone field pattern of an antenna is given by
E =
{®
(sin
cos)/
0
Find the directivity using
0 ≤ 0 ≤ π and 0≤ 0≤ π/2.
3m2sds2,
elsewhere
Chapter 11 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 11 - Lenz’s law states that the amount of voltage...Ch. 11 - An ideal inductor has no winding resistance.Ch. 11 - The total inductance of two parallel inductors is...Ch. 11 - The total inductance of parallel inductors is...Ch. 11 - The time constant of an RL circuit is given by the...Ch. 11 - Prob. 6TFQCh. 11 - Prob. 7TFQCh. 11 - Prob. 8TFQCh. 11 - Prob. 9TFQCh. 11 - Prob. 10TFQ
Ch. 11 - Prob. 1STCh. 11 - Prob. 2STCh. 11 - When the current through an inductor increases,...Ch. 11 - Prob. 4STCh. 11 - Prob. 5STCh. 11 - Prob. 6STCh. 11 - Prob. 7STCh. 11 - Prob. 8STCh. 11 - Prob. 9STCh. 11 - Prob. 10STCh. 11 - Prob. 11STCh. 11 - Prob. 1TSCCh. 11 - Prob. 2TSCCh. 11 - Symptom: The voltmeter 1 reading is 5 V, and the...Ch. 11 - Prob. 4TSCCh. 11 - Prob. 5TSCCh. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Prob. 3PCh. 11 - A 12 V battery is connected across a coil with a...Ch. 11 - Prob. 5PCh. 11 - The current through a 100 mH coil is changing at a...Ch. 11 - Prob. 7PCh. 11 - Suppose that you require a total inductance of 50...Ch. 11 - Prob. 9PCh. 11 - Prob. 10PCh. 11 - Determine the total inductance of each circuit in...Ch. 11 - Determine the total inductance of each circuit in...Ch. 11 - Prob. 13PCh. 11 - In a series RL circuit, determine how long it...Ch. 11 - Prob. 15PCh. 11 - In Figure 11-45, calculate the current at each of...Ch. 11 - Prob. 17PCh. 11 - Find the total reactance for each circuit in...Ch. 11 - Determine the total rms current in Figure 11-46....Ch. 11 - What frequency will produce a total rms current of...Ch. 11 - Prob. 21PCh. 11 - Determine the time constant for the circuit in...Ch. 11 - Prob. 23PCh. 11 - Prob. 24PCh. 11 - What is the current in the inductor 1.0s after the...Ch. 11 - Prob. 26PCh. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - Prob. 30PCh. 11 - Prob. 32P
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