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Results tagged with electromagnetism
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user 272086
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
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What’s the current density on infinite plate?
The current density equation states that $J = I/A$.
But I got a question that asking the current density over an infinite plate.
Say the current $I_0$ flows into the infinite plate that extent infinit …
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Dominant mode in rectangular waveguide
for a standard rectangular wave guide, which a > b (horizontal dimension > vertical dimension), the dominant mode is supposed to be TE10/TM10 mode.
If we flip the direction, make b > a (vertical dimen …
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Cut slit on waveguide [closed]
Say I have a waveguide operating on TE10 mode, as following,
I need to cut a slit on the waveguide so wave can radiate. Where Should I cut the slit?
I assume since TE10 mode the standing wave is betw …
- 113
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Waveguide operation frequency range
Google told me the operation frequency is 125% - 190% of the cutoff frequency. But I did not find any other material for reasoning.
My question: What happens if frequency was too high?
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Half sphere in waveguide
So, the cutoff freq, $f_c$ of a rectangular waveguide is following:
$$f_{c}=\frac{1}{2\pi\sqrt{\mu \epsilon }}\sqrt{(\frac{\pi}{a})^{2}}.$$
For TE10 mode, the equation is a little weird as I am droppi …
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$E$ field boundary condition and Snell`s law
So, for E field boundary condition, we know the vertical part of the incident field
$\varepsilon _{1}E_{1\perp } = \varepsilon _{2}E_{2\perp }$
and the tangential parts are same from both side.
That b …
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