Waveguides - Weekly Whiteboard

This video is about the basic concept of waveguides for electromagnetic wave propagation. These structures allow for nearly lossless propagation of RF energy.
Also watch: Coax to Waveguide Transitions and Antenna Measurements - Weekly Whiteboard • Coax to Waveguide Tran...
Antenna Design and Manufacturing duotechservices.com/antenna-d...

[@ankitkulshrestha4739]

Precisely and exactly what I needed

[@mustang8258]

Thank you for the effort you made to make this video 👍🏻

[@syakirahrozali9261]

thank you for the explanation. I understand it better now

[@AshrafRezkmusic]

Great work man

[@alonsechan8178]

Thank you very much !

[@wolfgangkemptner8702]

question: can useing waveguide connections compensate for lack of AC-coupling and grounding of ports?

[@ngocnguyen9517]

please explain operating principles of planar waveguides, thanks!

[@brettmoore3194]

Cool, hey how big would a waveguide for 7hertz? Just wondering and do harmonics or dual corresponding tones also travel harmoniously? And one more, can a waveguide be funneled into a amplifier horn? sorry dont know the name of the device

[@salimothman1735]

how would write absorbing boundary condition for lossy material

[@hardgamer123456789]

thanks for the effort it really helped me a lot

[@DanRazah]

+svend stormeyer I'm glad you enjoyed it. We have fun here making them.

[@hussainsir8266]

5 points on differenece between in circuilar and rectangular waveguide

[@AZMN32]

Excellent demonstration

[@danielrogers8768]

Much appreciated!

[@luisfernandomurillo3631]

Could you please recommend an introductory level text that covers the physics involved ?

[@davidhere_23]

When do we use Te or Tm mode?

[@cryora]

Are waves in general linear combinations of TE and TM modes (and possibly circular polarizations?)

[@alejandroramos9319]

General linear combinations of TE, TM AND TEM modes. The most general polarization is the elliptic one, circular and linear are just specific cases.

[@reddpill]

So do electromagnetic waves, when hitting a wall I.e flat surface, reflect like air or water?

[@alejandroramos9319]

On a perfect conductor yes. In fact a mirror is a conductor (a thin film of silver on the surface which reflects the light which is an electromagnetic wave). The losses he talks is mainly due to the fact that wave guides aren't perfect conductors, so this "no infinite conductivity" produces heat losses due to Joule effect: work done by the electric field to push charges on the conductor. To study the reflection of a medium one has to look por the impedancies, on a perfect conductor it is infinite so all EM reflects on a perfect conductor (gamma = -1).

[@fadaontop]

Thank you for this video.. Please can you explain more on rectangular and Circular Waveguides

[@danielrogers8768]

Primarily, they are both metal high-pass filters made of hollow metal. The difference is mainly that circular waveguides operate in TE11, and rectangular ones operate in TE10.

[@ahmedzaky8263]

Do you have any series of lectures the illustrates waveguides ?

[@DanRazah]

Not at this time, but this could certainly be done. Is there a particular aspect that you would like highlighted?

[@DanRazah]

This is a nice way to interact with the concepts
www.wolframalpha.com/input/?i=waveguide

[@keerthylaalitha8103]

beautiful explanation

[@danielrogers8768]

Thank you! Are there any other topics that you would like to see covered?

[@keerthylaalitha8103]

+Daniel Rogers yea sir .. please explain transmission lines..and their different formulae.

[@ajnavortex6641]

with which material are wave guides constructed?

[@DuotechServicesIncFranklin]

Highly conductive materials are used to construct waveguides. For rigid waveguides, these are metals that can be extruded in order to produce them inexpensively. Aluminum is common for this. Copper and brass are also common when building flexible waveguides. Rather than smooth walls, these are generally transverse corrugated structures that allow the material to flex for the application. Surface conductivity is what matters. You can use a plastic tube with a conductive surface layer of gold, nickel, or silver as well.

[@csaracho2009]

“A point charge” does not generate an electromagnetic wave or “electromagnetic radiation”...a dipole does.

[@TheRockindio]

Lol people found this and are trying to use it in flat earth and ancient free energy videos. Surprised they arent flooding the comments.

[@brettmoore3194]

My belly is upset too