(J)Element 3-63 Antenna Theory Flashcards

1
Q

Which of the following could cause a high standing wave ratio on a transmission line?

A

a detuned antenna coupler`

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2
Q

Why is the value of the radiation resistance of an antenna important?

A

knowing the radiation resistance makes it possible to match impedances for maximum power transfer

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3
Q

A radio frequency device allows RF energy to pass through in one direction with very little loss but absorbs RF power in the opposite direction is a

A

an isolator

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4
Q

What is an advantage of using a trap antenna?

A

it may be used in multiband operation

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5
Q

What is meant by the term radiation resistance of an antenna?

A

the equivalent resistance that would dissipate the same amount of power as that radiated from an antenna

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6
Q

What is meant by the term antenna bandwidth?

A

The frequency range over which the antenna can be expected to perform well

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