a) When an antenna is operating at its resonant point, what is the nature of its feedpoint impedance, in terms of real and reactive components? b) An antenna has a capacitive reactance of 20 S2 and an inductive reactance of 20 at its resonant frequency. If the frequency is doubled, what are the new values for XC and XL? c) What is the approximate length of a half-wave dipole antenna that is resonant at 150 MHz?
a) When an antenna is operating at its resonant point, what is the nature of its feedpoint impedance, in terms of real and reactive components? b) An antenna has a capacitive reactance of 20 S2 and an inductive reactance of 20 at its resonant frequency. If the frequency is doubled, what are the new values for XC and XL? c) What is the approximate length of a half-wave dipole antenna that is resonant at 150 MHz?
Introductory Circuit Analysis (13th Edition)
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
Transcribed Image Text:5.
Answer these short questions:
a) When an antenna is operating at its resonant point, what is the nature of its
feedpoint impedance, in terms of real and reactive components?
b) An antenna has a capacitive reactance of 20 2 and an inductive reactance of 20
at its resonant frequency. If the frequency is doubled, what are the new values for
XC and XL?
c) What is the approximate length of a half-wave dipole antenna that is resonant at 150
MHz?
d) What field do most antennas communicate with each other: the reactive near-field, the
radiating near-field, or the far-field?
e) How many Watts is 33 dBm?
f) Give any frequency of RF and state what it is used for.
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It is asked to discuss about the nature of feedpoint impedance, in terms of real and reactive components of an antenna when it is operating at its resonant point.
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