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1. How does the concept of an image antenna simplify the determination of the radiation pattern of an antenna above a perfect-conductor surface?

2. Discuss the reciprocity associated with the transmitting and receiving properties of an antenna. Can you think of a situation in which reciprocity does not hold?

3. What is the receiving pattern of a loop antenna?

4. How should you orient a loop antenna to receive (a) a maximum signal and (b) a mini- mum signal?

5. Discuss the application of the directional receiving properties of a loop antenna in the location of the source of a radio signal.

6. How is the effective area of a receiving antenna defined?

7. Outline the derivation of the expression for the effective area of a Hertzian dipole.

8. Discuss the derivation of the Friis transmission formula.

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