Antenna Theory and Design MCQs

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1. Which of the following properties of an antenna determines its directivity?





2. What is the term for the ability of an antenna to concentrate radiation in a particular direction?





3. Which type of antenna consists of a straight conducting wire or rod?





4. What is the impedance of a half-wave dipole antenna in free space?





5. Which antenna parameter is a measure of how well the antenna radiates power?





6. Which antenna type is commonly used for satellite communication due to its high gain and narrow beamwidth?





7. What is the purpose of a balun in antenna systems?





8. Which parameter describes the ability of an antenna to maintain a constant radiation pattern over different frequencies?





9. Which antenna design is characterized by its wide bandwidth and omnidirectional radiation pattern?





10. What is the typical input impedance of a folded dipole antenna?





11. Which parameter of an antenna describes its ability to radiate efficiently in a specific direction?





12. Which antenna type is known for its circular polarization, making it suitable for satellite communication and GPS?





13. What is the purpose of a ground plane in a monopole antenna?





14. Which antenna characteristic describes how sensitive the antenna is to signals arriving from different directions?





15. Which antenna design is often used in RFID systems due to its small size and omnidirectional radiation pattern?





16. What is the primary function of a reflector in a parabolic antenna?





17. Which type of antenna is commonly used for TV reception due to its high gain and directionality?





18. What is the main advantage of using a phased array antenna system?





19. Which antenna characteristic describes the range of frequencies over which the antenna operates effectively?





20. What is the approximate radiation pattern of a dipole antenna in free space?






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