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Short Dipole and Far-Field Region Fields

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Short Dipole and Far-Field Region Fields

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Questions and Answers

What is the main characteristic of a short dipole?

The current distribution is uniform

The current is constant along the length

The current distribution is triangular (correct)

The current distribution is sinusoidal

How does the magnetic potential vector for a short dipole compare to that of a constant current distribution?

It is one-half as large (correct)

It is the same

It is twice as large

It is one-fourth as large

What is the relationship between the radiation resistance of a short dipole and an infinitesimal dipole?

The radiation resistance is the same

The radiation resistance of a short dipole is one-fourth that of an infinitesimal dipole (correct)

The radiation resistance of a short dipole is twice that of an infinitesimal dipole

The radiation resistance of a short dipole is four times that of an infinitesimal dipole

Which expression correctly represents the average power density radiated by a short dipole in the far-field region?

$W_{av} = \frac{30}{8}\pi\frac{{I_{\circ}}^{2}\mathcal{l}^{2}}{\lambda^{2}r^{2}}\sin^{2}{\theta a_{r}}$ Signup and view all the answers

If $\beta$ is defined as $\frac{2\pi}{\lambda}$, what is the value of the constant $\eta$ used in the average power density expression?

$\eta = 120\pi$ Signup and view all the answers

What is the relationship between the radiation power of a short dipole and an infinitesimal dipole?

The relationship is not specified in the given information Signup and view all the answers

Short Dipole and Far-Field Region Fields

Choose a study mode

Podcast

Questions and Answers

What is the main characteristic of a short dipole?

How does the magnetic potential vector for a short dipole compare to that of a constant current distribution?

What is the relationship between the radiation resistance of a short dipole and an infinitesimal dipole?

Which expression correctly represents the average power density radiated by a short dipole in the far-field region?

If $\beta$ is defined as $\frac{2\pi}{\lambda}$, what is the value of the constant $\eta$ used in the average power density expression?

What is the relationship between the radiation power of a short dipole and an infinitesimal dipole?

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