Choose all the correct statements. Wrong answers will be penalized Question 9Select one or more:a.If the progressive shift in an antenna array is equal to zero, the radiation produced is “end-fire”b.A large loop antenna has a higher radiation efficiency compared to a dipole antenna.c.Gain is the parameter that defines how well an antenna focuses its radiation at a particular direction.d.Conduction loss occurs at the interface between the transmission line and antenna.e.To receive signal at a particular frequency, a loop inductor must be used to form a resonant circuit to tune towards that frequency.f.The value of PLF of two antennas without polarization mismatch is equal to 0 dB.

a. Incorrect. If the progressive phase shift in an antenna array is equal to zero, the radiation produced is "broadside", not "end-fire". In an end-fire array, the progressive phase shift is not zero.

b. Incorrect. A large loop antenna does not necessarily have a higher radiation efficiency compared to a dipole antenna. The radiation efficiency of an antenna depends on various factors such as its design, material, and operating frequency.

c. Correct. Gain is indeed a parameter that defines how well an antenna focuses its radiation in a particular direction. It is a measure of the antenna's directivity and efficiency.

d. Incorrect. Conduction loss does not occur at the interface between the transmission line and antenna. It occurs within the conductors that make up the antenna and transmission line due to the resistance of the conductors to the flow of electric current.

e. Correct. To receive a signal at a particular frequency, a loop inductor can be used to form a resonant circuit that is tuned to that frequency. This is a common practice in radio receivers.

f. Correct. The Polarization Loss Factor (PLF) of two antennas without polarization mismatch is indeed 0 dB. This is because there is no loss due to polarization mismatch when the antennas are aligned with each other.

a. Incorrect. If the progressive phase shift in an antenna array is equal to zero, the radiation produced is "broadside", not "end-fire".

b. Incorrect. A large loop antenna does not necessarily have a higher radiation efficiency compared to a dipole antenna. The radiation efficiency depends on various factors such as the material, design, and frequency of operation.

c. Correct. Gain is indeed a parameter that defines how well an antenna focuses its radiation in a particular direction. It is a measure of the antenna's directivity and efficiency.

d. Incorrect. Conduction loss does not occur at the interface between the transmission line and antenna. It occurs within the conductors that make up the antenna and transmission line due to the resistance of the material to the flow of electric current.

e. Correct. To receive a signal at a particular frequency, a loop inductor can be used to form a resonant circuit to tune towards that frequency. This is a basic principle of radio frequency tuning.

f. Correct. The value of Power Loss Factor (PLF) of two antennas without polarization mismatch is equal to 0 dB. This is because there is no power loss due to polarization mismatch.