Antenna Family MCQ’s

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

1. The antenna in which location of the feed determines the direction of the lobe are:
a) Wire antenna
b) Loop antenna
c) Helical antenna
d) Horn antenna

2. Based on the size of the loops, loop antennas are classified as small and large loops. This is the only classification of loop antenna.
a) True
b) False

3. The members of the antenna family which are made of wires of certain value in terms of operating wavelength are called:
a) Loop antennas
b) Wire antennas
c) Dipole antenna
d) Slot antennas

4. Antenna that does not belong to the horn antenna family among the following are:
a) Pyramidal horn
b) Conical horn
c) bi-conical horn
d) None of the mentioned

5. Reflector antennas are widely used to modify radiation patterns of radiating elements.
a) True
b) False

6. ______ antennas have gain less than reflector antennas but have more lenient tolerance on surfaces.
a) Helical antennas
b) Lens antennas
c) Array antennas
d) Slot antennas

7. Patch antennas are the antennas of small size and are made of:
a) Strip line
b) Microstrip lines
c) Coaxial cables
d) Rectangular waveguide

8. The pattern of the reflector in a reflector antenna is called:
a) Primary pattern
b) Secondary pattern
c) Reflector pattern
d) None of the mentioned

9. Lens antennas are classified into two types. One being fast antenna, the other one is:
a) Slow antenna
b) Delay antenna
c) Dynamic antenna
d) None of the mentioned

10. High directivity required in RADAR communication is satisfied using this type of antennas:
a) Wide band antennas
b) Antenna arrays
c) Slot antennas
d) Patch antennas

11. If the length of aperture in a pyramidal horn antenna is 10cm and δ for the design is 0.25. Then, the flaring angle of the pyramidal horn is:
a) 30⁰
b) 25.4⁰
c) 45⁰
d) 60⁰

12. The antennas which offer high operational bandwidth and the antenna parameters are maintained over a wide range of antennas are called:
a) Wide band antennas
b) Array antennas
c) Parabolic antennas
d) None of the mentioned

13. The terminal impedance of a dipole antenna is 710 Ω. The terminal impedance of the slot antenna given the intrinsic impedance of air is 377 Ω is:
a) 100 Ω
b) 50 Ω
c) 25 Ω
d) None of the mentioned

14. If the directivity of a square corner receiving antenna is 20 and operating at a wavelength of 0.25m, the effective aperture of a square corner antenna is:
a) 0.4 m2
b) 0.2 m2
c) 0.1 m2
d) None of the mentioned

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