Antennas Part I: Exploring the Fundamentals of Antennas - DC To Daylight
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Published 2023-02-22
So, in this theory-based episode of DC to Daylight, Derek discusses antenna physics, shows how a dipole antenna radiates RF, and demonstrates how that RF behaves with a receiver antenna. And, where Derek needs some help with the details, he calls in an expert, Sterling Mann, who works in the field of RF. In the next application-based episode, we'll build our own antenna and use it to communicate around the globe!
Watch the full interview with Sterling Mann and ask Derek questions on the element14 Community! bit.ly/3IIVEKl
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#0:00 Welcome to DC To Daylight
#1:20 Antennas
#3:05 Sterling Mann
#4:05 What Is an Antenna?
#6:18 Maxwell's Equations
#9:25 Sterling Explains
#12:55 Give Your Feedback
#antenna #antennas #radiofrequency #maxwellequations #dipole
All Comments (21)
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Watch the full interview with Sterling Mann and ask Derek questions on the element14 Community! bit.ly/3IIVEKl
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Hello! My expertise is Antenna Design with more than 40 years experience and more than 50 US Patents granted. I also give lectures on the subject; specifically on the Maxwell Equations and how they are used to design antennas. Keep up the good work!
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Great video. As for the length, no need to apologize. I find the amount of information presented was great with the right amount that doesn't overwhelm us. Thanks and will be watching part 2.
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As a former Amateur Radio Operator (Technician II), I really enjoyed this. I’ve made all sorts of antennas, but I never really understood the math behind what I was doing.
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So much to learn here. Looking forward to part 2!
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8:20 No, an electric field can indeed exist without an magnetic field, and vice versa. The time term in Maxwells 3. and 4. equations just tells you than when one field is changed over time, the other is induced.
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~7:30 When speaking of the mathematics behind Maxwell's Equations: '∇' is the nabla symbol; however, when used in mathematics it is called the "del operator". When the ∇ is used on a scalar, e.g., ∆f, "del f", is called the "gradient of f." Used in a dot product on a vector, e.g., ∇ • B⃗ "Del dot B⃗ is called the "Divergence of B⃗". Used in a cross product it is called the Curl. "Del cross B⃗", ∇ x B⃗, is the Curl of B⃗. 73, W1JP
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I'm an Engineer myself and I honestly can say: content like this makes universities kinda redundant...
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We really appreciate you, future Derek:hand-pink-waving:
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Yeah, antennas have always been "black magic" to me, now they are "magic". Looking forward to part 2. I am learning a lot from your channel - thanks!
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Glad to have found your channel. I appreciate information and science rich videos. You are helping the world become scientifically literate.
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Really appreciate your efforts. Keep it up and waiting for Part-2 🤟
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Glad to see your channel and the information is very use full.
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All that beautiful TMDE I used to work on!
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Many thanks ❤
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Few corrections on Maxwell's Equation - 1. 8:15 Electric fields can exists without a Magnetic field. There are actually two types of electric field - Electrostatic field and Induced Electric field. One is due to stationary charge distribution(Gauss law) and other one is due to a changing magnetic field(Faraday's laws). 2. 8:41 J is not displacement current. J is the CURRENT density. Displacement current is actually the other term in Ampere's Law which is ε(δE/δt).
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Very interesting! Thanks.
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Great job Derek 👍
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Very nice presentation
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Thank you for this video. I did have trouble in understanding the section on Maxwell's equations. I will have to spend some time on that.
