Antenna Theory Flashcards
Which of the following could cause a high standing wave ratio on a transmission line?
A detuned antenna coupler.
Why is the value of the radiation resistance of an antenna important?
Knowing the radiation resistance makes it possible to match impedances for maximum power transfer.
A radio frequency device that allows R energy to pass through in one direction with very little loss but absorbs RF power in the opposite direction is a:
Isolator.
What is an advantage of using a trap antenna?
It may be used for multiband operation.
What is meant by the term radiation resistance of an antenna?
An equivalent resistance that would dissipate the same amount of power as that radiated from an antenna.
What is meant by the term antenna bandwidth?
The frequency range over which an antenna can be expected to perform well.
