ASSIGNMENT 2
Textbook Assignment:
“Antennas,“
chapter 2, pages 2-1 through 2–32.
2-1.
2-2.
2-3.
2-4.
2–5.
2-6.
Electromagnetic radiation from
an antenna is made up of what
two components?
1.
E and H fields
2.
Ground and sky waves
3.
Vertical and horizontal
wavefronts
4.
Reflected and refracted
energy
What determines the size of a
transmitting antenna?
1.
Transmitter power
2.
Available space
3.
Operating frequency
4.
Distance to be
transmitted
Most practical transmitting
antennas are divided into two
classifications, Hertz and
Marconi.
1.
T
2.
F
Hertz antennas are designed to
operate at what wavelength in
relationship to their
operating frequency?
1.
Quarter–wave
2.
Half–wave
3.
Three quarter–wave
4.
Full-wave
Marconi antennas are used for
operating frequencies below
what level?
1.
10 MHz
2.
6 MHz
3.
4 MHz
4.
2 MHz
All antennas regardless of
their shape or size have how
many basic characteristics?
1.
1
2.
2
3.
3
4.
4
2-7.
The ability to use the same
antenna for both transmitting
and receiving is known by what
term?
1.
2.
3.
4.
2-8.
The
Gain
Reciprocity
Directivity
Polarization
ability of an antenna or
2-9.
2-10.
2-11.
array to focus energy in one
or more specific directions is
represented by a measurement
of what antenna property?
1.
Signal Strength
2.
Reciprocity
3.
Directivity
4.
Polarization
The gain of a transmitting
antenna is 9 dB, what will the
gain be for the same antenna
used for receiving?
1.
9 dB
2.
6 dB
3.
4 dB
4.
3 dB
Which,
if any, of the
following components of a
radiated electromagnetic field
determines its direction of
polarization?
1.
H lines
2.
E lines
3.
Angle of Propagation
4.
None of the above
Over long distances the
polarization of a radiated
wave changes, at what
frequencies will this change
be the most dramatic?
1.
VLF
2.
LF
3.
MF
4.
HF
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