RF and Microwave PCB Design - Part 4: Power Dividers.

Ben Jordan continues the OnTrack Whiteboard Video Series on RF and Microwave PCB design with an episode on a pervasive and useful PCB transmission line component type: Power Dividers.
This is part 4 of a multi-part series. Please subscribe to the channel so you can watch the latest episode as soon as it's published!
For previous episodes in this RF and Microwave PCB design series, follow the links below:
• (1) - RF and Microwave...
To view the whole OnTrack Whiteboard Playlist:
• (1) - RF and Microwave...
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[@zhenboxu6599]

A real gentleman in engineering, haven't seen this decent style of talk in this industry for years.

[@Chris-oo3uo]

This is a really fantastic series helping to demystify RF PCB designs. It would be great to have a video on doing the actual layout of the Wilkinson divider in Altium Designer. I would love to see how you do the single 50 Ohm port into the 2 half circle 70ish Ohm ports and then from the 100 Ohm terminating resistor pads into those nice curved 50 Ohm trace output ports.

[@robertbox5399]

Loving the correction of 'zed'!

[@cagri.saglam]

Great video series provided by Academy. Thank you!

[@AltiumAcademy]

Glad you like them!

[@user-iw9ws7jk3g]

Adding some measure screenshot at the end of the course will be perfect . thank you

[@pbaemedan]

Sir, great video series, I would like to recommend: 1) Please do not hesitate to do the math, 2) Could you include reference sources that can be downloaded. Thank you

[@blakely1317]

thanks!

[@pawelasko]

Just fantastic...

[@AltiumAcademy]

Thank you so much. What other topics are you interested in learning?

[@pawelasko]

@@AltiumAcademy It was very interesting to see a real circuit after the theoretical part. Could you make some more videos like this, based on the knowledge you already shared with us? Videos, where you show some simple projects, not necessarily physical circuits, computer projects are enough (in Altium software, of course;) with an explanation of what and why. Maybe some active elements in the future? Fast amplifier? Fast comparator? How a good PCB design should look for such applications?

[@victordatdo9880]

Thank you very much for the detailed design, very helpful. I have one question about ' Power handling " , How to calculate Power handling in Power divider?

[@charlie13153]

Looking forward to future parts to the series, are you planning on doing one on RF switching at some point?

[@tarquinralph5652]

Really useful thanks. What happens if you want to manage a range of frequencies, for example in an Oscilloscope that can process signals from DC to 10 GHz? All the stubbs work for specific frequencies.

[@beamray]

Thanks a lot. CAN Transformers be smaller than 1/4Л? I meat will 4GHz divider work on 300Mhz signal?

[@mheuuj]

how does the Wilkinson power divider achieve isolation of its input port?

[@thebloodychoppers]

What are you using to write? It looks like an ordinary notebook and some digital pen

[@amrwael8348]

Hello Sir , I have a question in the scope of the first introductory video of this series. When dealing with rogers RO4350 for example there are 2 dielectric constants in the datasheet one is 3.66 and the other one is 3.48. What I understand is that those two values were calculated/measured in different methods in which one of them takes into account some material parameters since it's not isotropic (composite of more than 1 material). The question is which one of them is recommended to be used in altium designer for microstrip line in order not to take the effect into consideration twice? Thank you very much in advance.

[@ahmetciftci9035]

you need to take consider of design dk value.

[@ericpilboue3276]

Tres bon pour moi, j'ai décroché a 6.21 a cause du sous titrage qui masque vos écritures , mais je vais continuer sur le pc plus tard et surtout essayer de mesurer vos theories avec mon materiel d'amateur. En 1981 mon premier employeur fabriquait des radios libres avec juste un tektro 465 et du flair 🤔 Merci

[@paulwilkinson6731]

Any chance of a video of you creating the Wilkinson divider tracks on Altium?

[@oshadhaviran9077]

are you done?

[@ahmedesmail9555]

How did you make the schematic of the power divider in Altium Program ?

[@oshadhaviran9077]

were you design?

[@fagussylvatica5013]

What kind of milling machine (brand) do you use to make these RF PCB prototypes?

[@fagussylvatica5013]

..and thanks..Very interesting with these videos - keep up the good work :-)

[@manoj_n9575]

how to calculate lambda/4 ?

[@oshadhaviran9077]

sir, can I take the project file?

[@ahmetciftci9035]

you are saying that you dont need 100ohm line because it is already 100ohm. however that fact is that the reason of quarterwave transformer line is 70.71 ohm is that the left part of the quarter wavelength is 100ohm. if you delete the 100ohm, it means you delete the impedance of quarterwave from beign 70.71ohm. I hope I' m clear enough.

[@ahmetciftci9035]

The math you are doing in 8:00 is only acceptable when the port2 is close to 50ohm enough. Otherwise, it won't work.

[@Tortuga2321]

why the engineers' writing is so bad. Me too because :)