Antenna Basics MCQ’s

Electronics & Communication Engineering RF & Microwave Circuit Design

This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Antenna Basics”.

1. _________ is a device that converts electrons to photons or vice-versa.
a) Antenna
b) Electron gun
c) Photon amplifier
d) Microwave tube

2. The basic equation of radiation that is applied to any antenna irrespective of the type of the antenna is:
a) iL= Qv
b) iQ = Lv
c) i/L=Q/v
d) None of the mentioned

3. The basic requirements of transmitting antennas are:
a) High efficiency
b) Low side lobes
c) Large signal to noise ratio
d) Lone of the mentioned

4. When the separation between two lines that carry the TEM wave approaches λ the wave tends to be radiated.
a) True
b) False

5. The beam width of the antenna pattern measured at half power points is called:
a) Half power beam width
b) Full null beam width
c) Beam width
d) None of the mentioned

6. An antenna has a field pattern E (θ) =cos θ. cos 2θ. The first null beam width of the antenna is:
a) 450
b) 900
c) 1800
d) 1200

7. The number of patterns radiation pattern required to specify the characteristic are :
a) Three
b) Four
c) Two
d) Five

8. An antenna has a field pattern of E (θ) = cos2 θ, θ varies between 0 and 900. Half power beam width of the antenna is:
a) 330
b) 660
c) 12000
d) None of the mentioned

9. The solid area through which all the power radiated by the antenna is:
a) Beam area
b) Effective area
c) Aperture area
d) Beam efficiency

10. Power radiated from an antenna per unit solid angle is called radiation intensity.
a) True
b) False

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