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 convexThis question was addressed to me during an interview.I'd like to ask this question from Basics in chapter Reflector Antenna of Antennas

Which of the following combination forms a Cassegrain antenna?(a) The

1.	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 convexThis question was addressed to me during an interview.I'd like to ask this question from Basics in chapter Reflector Antenna of Antennas
Answer» Right OPTION is (a) The main reflector is PARABOLIC and sub-reflector is hyperbolic Explanation: A Cassegrain antenna is a dual reflector antenna and is axis symmetry. It consists of two REFLECTORS and one PRIMARY feed. The main reflector is parabolic and sub-reflector is hyperbolic (convex).

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