Q2 = A magnetic field strength of 10 uA/m is required at a point on 0 = n/2, 5 km from an antenna in air. Neglecting ohmic loss, how much power must the antenna transmit if it is (a) A Hertzian dipole of length A/25? (b) A half-wave dipole? (c) A quarter-wave monopole? (d) A 10-turn loop antenna of radius p, = 1/20? %3D
Q2 = A magnetic field strength of 10 uA/m is required at a point on 0 = n/2, 5 km from an antenna in air. Neglecting ohmic loss, how much power must the antenna transmit if it is (a) A Hertzian dipole of length A/25? (b) A half-wave dipole? (c) A quarter-wave monopole? (d) A 10-turn loop antenna of radius p, = 1/20? %3D
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Transcribed Image Text:Q1- On TURKSAT 4B satellite, we have deployable reflector antennas on
each side. One of the antenna diameter is 1.5 meters. Assume that the efficiency is 70%.
Downlink frequency of the signal is 11.5 GHz.
a) Calculate the gain of this antenna in dBi.
b) How about the beamwidth in degrees (HPBW)?
c) What is the far-field condition of this antenna?
d) How can we measure the gain of this antenna on Earth? Suggest something.
Q2 =
A magnetic field strength of 10 µA/m is required at a point on 0 =
n/2, 5 km from an antenna in air. Neglecting ohmic loss, how much power must the antenna
transmit if it is
(a) A Hertzian dipole of length 2/25?
(b) A half-wave dipole?
(c) A quarter-wave monopole?
(d) A 10-turn loop antenna of radius p, = 1/20?
4.
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