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Patch Antenna Design

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Altium Academy

Altium Academy

Күн бұрын

Пікірлер: 33
@KeremGünay-c2z
@KeremGünay-c2z 26 күн бұрын
such consice and useful information. I'm all set for my patch antenna design. Thanks!
@LightningHelix101
@LightningHelix101 2 жыл бұрын
The auto zoom is a little distracting, but the board and audio are clear.
@LightningHelix101
@LightningHelix101 2 жыл бұрын
Good vid! Thanks for the blog.
@AltiumAcademy
@AltiumAcademy Жыл бұрын
Glad you enjoyed it!
@로제니
@로제니 5 ай бұрын
so much help!
@jrthhfdff
@jrthhfdff 2 жыл бұрын
Any advice on different feed methods? Trying to figure out how to feed the patch through the substrate so the traces aren't on the same side as the patch.
@Zachariah-Peterson
@Zachariah-Peterson 2 жыл бұрын
Excellent question, I'll make a video on it today with an example
@myetis1990
@myetis1990 2 жыл бұрын
good job Zach, thank you. I always feel comfortable when I see a numeric example if the Altium has a feature as a calculator then you can show us an example using it.
@Zachariah-Peterson
@Zachariah-Peterson 2 жыл бұрын
It's not available as a feature inside of Altium, but I created a calculator that helps with this, you can find a link in the description
@pyrokinetikrlz
@pyrokinetikrlz Жыл бұрын
thanks for the tutorial :)
@hjioooo
@hjioooo 2 жыл бұрын
thanks for the video!
@AltiumAcademy
@AltiumAcademy Жыл бұрын
Sure thing!
@chandanbiswas4322
@chandanbiswas4322 2 жыл бұрын
Hi Zach, What are the unit of length & Width and as well as for the frequency? and should we take speed of light in m/sec of km/h?
@Zachariah-Peterson
@Zachariah-Peterson 2 жыл бұрын
For the ratio quantities, it does not matter as long as the quantities in a ratio are the same units. For the other quantities, just pick a standard unit system, MKS or CGS will work fine. Being a physicist I always use MKS.
@WinChester_Ltd
@WinChester_Ltd 3 ай бұрын
Hi Zach, is this necessary to use a quarter wave transformer and what is the length of it? Can connect 50 Ohm trace directly to antenna? And about Higher order frequencies, what should I put instead of i,j,k, just random numbers? Thank you for the video, you did a great job!!! 👏
@Zachariah-Peterson
@Zachariah-Peterson 2 ай бұрын
Thank you. Quarter wave transformer will work, but you could use any fractional wavelength transformer as long as the resulting width of the transformer line is not too thin to be fabricated. You can only connect a 50 Ohm trace directly to the antenna as long as the antenna's input impedance is also 50 Ohms, which it never is unfortunately. The same principles apply for all higher order frequencies.
@alfiz9943
@alfiz9943 2 жыл бұрын
Please make video about inverted F antenna
@Zachariah-Peterson
@Zachariah-Peterson 2 жыл бұрын
It's in the pipeline
@osmanpasha_diy
@osmanpasha_diy 7 ай бұрын
How do you calculate trace width from the impedance of q-wave?
@Zachariah-Peterson
@Zachariah-Peterson 6 ай бұрын
If you know the impedance of the Q-wave section, you can get the width from trial and error in a calculator app, that would be the easiest way. Just start plugging in values and keep making the width smaller until the trance impedance matches the impedance of the Q-wave section. The layer stack manager in Altium Designer can also do it, just design your layer stack and enter the impedance you want and it will automatically calculate the trace width that gives this impedance.
@osmanpasha_diy
@osmanpasha_diy 6 ай бұрын
@@Zachariah-Peterson thank you!
@chandanbiswas4322
@chandanbiswas4322 2 жыл бұрын
Hi Zach, why GND block the radiation of the antenna?
@ThermalWorld_
@ThermalWorld_ Жыл бұрын
Because it reacts like a capacitor on the alternating current "negative flipp and positive flipp" by blocking and cancelling the energy emitted by the antenna.
@87Spectr
@87Spectr 2 жыл бұрын
It was interesting and useful!
@AltiumAcademy
@AltiumAcademy Жыл бұрын
Glad to hear that!
@MichaelKingsfordGray
@MichaelKingsfordGray 2 жыл бұрын
Of course, this is simply a gross first-order approximation. To model it exactly, one needs QED.
@Zachariah-Peterson
@Zachariah-Peterson Жыл бұрын
I guess if you want to get really exact at the sub-atomic level, then sure use quantum electrodynamics. At the macroscopic level Maxwell's equations work just fine.
@MichaelKingsfordGray
@MichaelKingsfordGray Жыл бұрын
@@Zachariah-Peterson Multi GHz or THz are not at the macroscopic level. Maxwell Equations fail progressively at this extreme, and beyond. You may as well get it 100% correct, rather than using an approximation, is what I am urging.
@Zachariah-Peterson
@Zachariah-Peterson Жыл бұрын
@@MichaelKingsfordGray GHz and THz most certainly are at the macroscopic level. The "Q" in QED means "quantum", you do not need quantum electrodynamics to describe propagation of electromagnetic waves on mm or cm length scales. A single wavelength would encompass many multiples of Avogadro's number of particles, that is the definition of macroscopic phenomena. QED is applicable in the case where the electromagnetic field interacts with individual sub-atomic particles, you don't need QED to describe wave propagation in media with Avogadro's number worth of particles. Physicists and engineers did all of this successfully in the 1800's and 1900's with only Maxwell's equations, before quantum mechanics was conceived or widely understood.
@emmetray9703
@emmetray9703 Жыл бұрын
0.824 * h, you forgot h when calculating L
@Zachariah-Peterson
@Zachariah-Peterson Жыл бұрын
Good catch, you're right
@UtsavGpt
@UtsavGpt 2 жыл бұрын
Great video, please improve the white balancing. Looks very washed out.
@AltiumAcademy
@AltiumAcademy Жыл бұрын
Noted!
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