Antenna Briefs #1 - Frequency, Wavelength, and Size

This is the first in a series of videos on antennas and how they work. It is based on and supports a university course, but covers material without any deep math. In Episode 1 we overview key elements of radio antenna operation and signal propagation. We start with the first antennas created by Hertz and proceed to demonstrations with modern antennas - focusing initially on dipoles. Additional types including loops, monopoles, and dish antennas are covered as examples of real-world antennas and are presented across the frequency range from 1 MHz to 40 GHz. The key takeaway is the formula for wavelength and how it relates to frequency antenna size (and directivity).

[WRMD]

You've done an excellent job at condensing a very large amount of material into under half an hour. I can't wait to continue further into this series. Thanks and 73's!

[fm]

Thank You! I took physics 45+ years back - the concepts have been utilized often since then, but NOT the math. Your explanations are very clear, and greatly appreciated. So much to learn!

[aerofart]

Watching your videos has brought me so much closer to understanding the mysteries of radio magic. Thank you for your monumental effort!

[michaelgallias]

Thank you for the wonderful video. Finally someone who explains those things simply, with many photos. Looking forward to the next one.

[sullivanzheng]

Another series that fits exactly what I need! Just finished my first AM/NFM/SSB SDR based on your radio design 101 series now it is time to kickstart my antenna project.

[gibtsnocheinenfreien]

What a cool video series! Thank you so much!

[fjs]

Such a great amount of information on antennas in a short time. Thanks

[maksberlec]

Gooood! I think I'll watch the serlies again and again.

[julienpoivret]

Thanks you for crystallising the true natural aspect of light. a very good and sharp explanation.

[josecarlosribeiro]

What a beautiful class, Professor!👏🏾👏🏾👏🏾 Congratulations, God bless you and Marry Christmans! Jacareí-Sao Paulo-Brazil.

[caseylocke]

This is a great video and I appreciate you breaking it down so well. I'd like to make a small suggestion and please, please, please don't take it the wrong way. I promise I'm not trying to be nit picky. I'm a sound guy so these are the terms I think in. In future videos, you might consider addressing some of the mouth noises issues. There's a lot of mouth and lip smacking between sentences. That can usually be addressed by rinsing the mouth and then having some hot tea before recording. :) Just a thought. Thanks again!

[lama]

hello professooor!!! was stumbling a bit through my capstone project concerning a switching rf circuit. thats because I think the fundamentals of RF and antenna did not really click. I found your youtube channel then your website and man!! i always wanted a great source that helps package the material of rf for me. and just taking a look at your website. I have hw to do! thanks a lot for the help 🙏🏽 i am excited to get started

[ethical-not-evil]

thx for this explanation but i got a question, does antenna matter when we wanna send and recv to from diff freqs from single antenna (with sdr) or should we use a good sdr.

[dominicestebanrice]

This was SO helpful. For a young person interested in this field and thinking about college, what is the optimal route into the wireless communications field? Is it better to do a general four-year bachelor degree in physics or electrical engineering or should one just dive in and try to enroll in a telecoms or RF engineering specialty program?

[richardphillips]

This is great. One hope that I have is to understand about actually measuring rf exposure inside of the near field rf from the transmitting antenna.

[byronwatkins]

Curved wavefronts typically do not have E and B in phase, but plane waves must have.

[benoitraulin]

Thanx a lot, my next course (il France) wil, I hope, have the same level of science a good sense.

[noluck]

STOP the Ads, as most ads have Malware and are killing computers!!!

[R_J]

Terrible. Brings back PTSD from my college days of enduring poor instructors. Unsubscribing.