Quiz - Antenna Figures of Merit
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Question 1 of 10
1. Question
True or False: Antenna efficiency is a measure of how well an antenna converts power from a power source into radiating electromagnetic power
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Question 2 of 10
2. Question
True or False: If the input impedance of an antenna is matched to source impedance, there is considered to be full reflection at the antenna's input
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Question 3 of 10
3. Question
True or False: Antenna radiation efficiency is a measure of how much power is lost in the antenna due to conductive effects and dielectric losses
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Question 4 of 10
4. Question
True or False: In general, the polarization of an incoming wave does not affect the losses seen at the receiving antenna
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Question 5 of 10
5. Question
True or False: Any return loss below 0dB is considered when calculating the bandwidth of an antenna
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Question 6 of 10
6. Question
True or False: The percent bandwidth for the frequency bands 1GHz-2GHz and 10GHz-11GHz are the same
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Question 7 of 10
7. Question
Given an antenna radiating with a power of $P_{rad} = 2.25W$, find the antenna radiation efficiency given that the input mismatch efficiency is $e_r = 0.8$ and the input power is $P_{in} = 3W$ assuming no polarization loss
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Question 8 of 10
8. Question
Given an antenna radiating with a power of $P_{rad} = 2W$ with an input power of $P_{in} = 7W$ and loss efficiencies of $e_r = 0.55$ and $e_{cd} = 0.75$ , find the angle of the radiated wave using the polarization loss factor
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Question 9 of 10
9. Question
Find the polarization loss factor for an antenna that is desired to radiate a wave purely in the z direction, assuming an actually radiated wave given as $\overline{E} = 7cos(\omega t + z) \hat{a}_y - 3cos(\omega t + z) \hat{a}_z$
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Question 10 of 10
10. Question
What is the percent bandwidth for an antenna that has a $S_{11}$ response that is below -10dB from 10GHz to 25GHz?
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