Antennas Part II: Radiation Demo & Antenna Modeling - DC To Daylight

Continuing our deep dive into antennas on DC to Daylight, Derek shows how a dipole antenna radiates RF and demonstrates how that RF behaves with a receive antenna. He also continues the conversation with RF expert Sterling Mann, and does some antenna modeling with a program called MMANA-GA.

In the next application-based episode, we'll build our own antenna, and use it to communicate around the globe!

#0:00 Welcome to DC To Daylight
#0:44 Demo
#2:26 Modeling
#8:20 Sterling Mann
#16:03 Give Your Feedback

#antenna #radiofrequency #maxwellequations #dipole #antennas

[kingsman]

Superb content and I love the phrase *"...DC to daylight..."* ❤

[nqobilesibisi]

Im an expert at building antennas by mistake when designing PCBs 😂😂

[digus]

I’ve always built antennas - but the nanoVNAs have made it so much cheaper and easier now. A real game changer- now I’m off into all types of filters as well.

[gaillipfert]

Hi Derek. I just found your videos and am excited to see the rest of them. I'm a new ham and am interested in learning more about antennas, so your videos are perfect. I'm eager to see the next video to learn how you build them. Thanks!

[coledelong]

Inverse square law is a 1/x^2 decay rather than exponential as said in the video. Good video though

[asif]

Really superb content. Enjoyed the discussion . Brings back my memories of university days.

[FEPLabsRadio]

Excellent video Derek! That was a great deep dive!

[billgeorge]

A 12oz aluminum pop can makes an excellent UHF mobile antenna. It's not durable. It does not like car washes. But, as a simple unity dipole on the roof of a car or truck, it performs extremely well. And it doubles as a 700/800Mhz antenna too.

[blenkiron]

This is amazing content! Sterling is a great guest too

[pesekmar]

That was superb... much moooore of that please! :)

[mewintle]

I often informally teach tech, and that light-up antenna showing field strength is awesome. Where can I find out about building it?

[Kevin]

I came across this in my suggested by youtube it is good but your discussions are too dense for someone that is new. Like feed point? Was that where you connect your wires to the antenna? I am keen to learn how to make an antenna and attach a custom length wire to improve my mobile data signal as the 4g modem router doesn't have direct line of sight in the house and would love to add an antenna outside on the fence and run a wire inside through the fly screen to the modem router.

[alanjewell]

I've always wondered about ferrite rod am antennas. As I understand them, they pick up primarily the magnetic component which induces a current in the coil wrapped around it. Does it pick up the electric field component at all? Also, they don't seem to be usable as transmit antennas, is that correct? All the am transmit antennas I've seen are a vertical mast or an array of suspended long wires.

[qzorn]

Could you put together a video on the new Orange Pi-5 running some GPIO examples? Do you have the O-Pi-5 26-pin breakout cable-board for a bread-board? 😎 Thank you.

[lloydbaker]

What frequency were you using for your lightbulb dipole demo? Also, what is the minimum power wattage required to make this demo work? I'm interested in constructing something similar to this.

[SpeedDeamon]

My main question is will this help me build a herf gun wave guide allowing for electronics to be disabled from a distance? 🤔

[kellyhofer]

i'm interested to know how SDRs deal with digitally tuning without changing antenna length. Are they just more sensitive at some frequencies? or do they digitally change their length?

[owenpenning]

2:00 it doesn’t decrease exponentially. It decreases by a power of -2

[oakspines]

What happens if I send a different frequency signal to the dipole which was calculated to a different wavelength ? Does it radiate at all, even inefficiently ?

[sagunmishra]

How can I make 74HC194 4-bit bidirectional universal shift ragister
Please help us