Reflector Antenna Basics MCQ’s

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This set of Antenna Multiple Choice Questions & Answers (MCQs) focuses on “Reflector Antenna Basics”.

1. Reflector antenna operates on the Geometric optics principle?
a) True
b) False

2. Which of the following is a dual reflector antenna?
a) Cassegrain antenna
b) Parabolic antenna
c) Offset reflector antenna
d) Wire antenna

3. Which of the following refers to the pattern of reflector in the reflector antenna?
a) Primary pattern
b) Secondary pattern
c) Reflector pattern
d) Feed pattern

4. Which of the following combination forms a Cassegrain antenna?
a) The main reflector is parabolic and sub-reflector is hyperbolic
b) The main reflector is parabolic and sub-reflector is concave
c) The main reflector is hyperbolic and sub-reflector is parabolic
d) The main reflector is hyperbolic and sub-reflector is convex

5. What is the value of magnification of the Cassegrain antenna if its sub-reflector eccentricity is 2?
a) 3
b) 2
c) 1/3
d) 1/2

6. Which of the following is not a reflector antenna?
a) Convex-convex
b) Corner
c) Gregorian
d) Cassegrain

7. Which of the following efficiency is used to measure the power-loss at the feed pattern which is intercepted by reflector?
a) Spillover
b) Illumination
c) Taper
d) Aperture

8. Which of the following is false regarding a reflector antenna?
a) Reflector antennas are high gain antennas with two antennas
b) Both the primary and secondary antennas are excited
c) The pattern of the reflector in the reflector antenna is the Secondary pattern
d) A dual reflector contains two reflectors and one primary feed

9. When a reflector is placed at the foci along the feed it is called ____ antenna
a) Dual reflector antenna
b) Plane antenna
c) Wire antenna
d) Convex-Convex

10. Which of the following is used as a secondary antenna in the reflector antenna?
a) Horn
b) Feed antenna
c) Parabolic
d) Dipole

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