(a) How should you orient the axis of the receiver's loopstick to maximize the signal from station A and minimize it from station B? (b) If you were lost on a large lake surrounded by radio stations at known locations, how could you use a loopstick-equipped radio (no GPS!) as a direction finder?
(a) How should you orient the axis of the receiver's loopstick to maximize the signal from station A and minimize it from station B? (b) If you were lost on a large lake surrounded by radio stations at known locations, how could you use a loopstick-equipped radio (no GPS!) as a direction finder?
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...
Related questions
Question
![VDC
+
Rp
C₁
R₁
L₁
: C₂ AC
R₂
22
10VP
Vp
B
FIGURE 12.23 Equivalent circuits of battery power supply, two bypass capacitors, and
power-supply load for Problem 12.10.
of the loopstick. Most long-wave signals are oriented (polarized) so that the
electric field is vertical (perpendicular to ground) and the magnetic field is
horizontal (parallel to the ground). Suppose you wish to receive a signal from
an AM broadcast-band station A that is located due north of your receiver. An
interfering station B on the same frequency produces a much stronger wave
at your location, and station B is located due east of you.
(a) How should you orient the axis of the receiver's loopstick to maximize
the signal from station A and minimize it from station B?
(b) If you were lost on a large lake surrounded by radio stations at known
locations, how could you use a loopstick-equipped radio (no GPS!) as
a direction finder?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4bf62d6d-db44-481f-809c-2b5fe2fdf00c%2F05db2279-391b-4b7e-b8de-5a10855f0c58%2Fxt31ct_processed.png&w=3840&q=75)
Transcribed Image Text:VDC
+
Rp
C₁
R₁
L₁
: C₂ AC
R₂
22
10VP
Vp
B
FIGURE 12.23 Equivalent circuits of battery power supply, two bypass capacitors, and
power-supply load for Problem 12.10.
of the loopstick. Most long-wave signals are oriented (polarized) so that the
electric field is vertical (perpendicular to ground) and the magnetic field is
horizontal (parallel to the ground). Suppose you wish to receive a signal from
an AM broadcast-band station A that is located due north of your receiver. An
interfering station B on the same frequency produces a much stronger wave
at your location, and station B is located due east of you.
(a) How should you orient the axis of the receiver's loopstick to maximize
the signal from station A and minimize it from station B?
(b) If you were lost on a large lake surrounded by radio stations at known
locations, how could you use a loopstick-equipped radio (no GPS!) as
a direction finder?
![Orientation of victim and electromagnetic-wave EMI. The rule that an antenna
must be a few percent of a wavelength long to operate effectively becomes a
problem with long-wave signals (below 3 MHz), where the wavelengths
exceed 100 m. As a result, some radios receive only the magnetic field associ-
ated with the radiated wave, because magnetic-field pickup devices can be
much smaller than a wavelength and still operate reasonably well. One way
this is done is with a type of antenna called a loopstick, which is basically a
long cylindrical magnetic core inside a coil of wire. The loopstick antenna is
sensitive only to the component of the magnetic field that is parallel to the axis](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4bf62d6d-db44-481f-809c-2b5fe2fdf00c%2F05db2279-391b-4b7e-b8de-5a10855f0c58%2Fqn2t7i_processed.png&w=3840&q=75)
Transcribed Image Text:Orientation of victim and electromagnetic-wave EMI. The rule that an antenna
must be a few percent of a wavelength long to operate effectively becomes a
problem with long-wave signals (below 3 MHz), where the wavelengths
exceed 100 m. As a result, some radios receive only the magnetic field associ-
ated with the radiated wave, because magnetic-field pickup devices can be
much smaller than a wavelength and still operate reasonably well. One way
this is done is with a type of antenna called a loopstick, which is basically a
long cylindrical magnetic core inside a coil of wire. The loopstick antenna is
sensitive only to the component of the magnetic field that is parallel to the axis
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