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Which of the following is a type of dual reflector?

45. Which of the following is a type of dual reflector?

1. Gregorian Antenna
2. Cassegrain Antenna
3. Lobster Back Antenna
4. All of the above

Answer: A) All of the above

Explanation:

Dual-reflector antennas are antenna systems with two reflector surfaces that shape and focus electromagnetic waves. There are two types of reflectors in this system: primary and secondary. A primary reflector collects and directs waves toward a secondary reflector.