Impedance Matching Networks

New link to slides (moved to a new Google Drive location):

Outline
-Two-element Matching Networks (L-matching)
-Three-element Matching Networks (Pi and T)
-Low Q-factor Matching Network

[anandawijesinghe]

This is a great, mathematically rigorous, approach which I find easier than using Smith Charts !

You helped me impedance match independent RF amp, Freq Conv, and IF amp modules in an experimental vacuum tube communications superhet radio that I am building for fun, with home wound antenna, rf interstage, oscillator coils and IF transformers.
I was able to check my designs after building them with TinySA spectrum analyzer, NanoNVA network analyzer, and a 2 channel DSO with a built-in SIGGEN !

Thank you ! 🥰!

[sullivanzheng]

Great lecture, great examples, and as a hobbyist this video answered many of my lingering questions. And this mathematically rigorous treatment is much better than practical smith chart since it also reveals bandwidth implications and quantitative aspect of the matching network.

[khaben]

Sir you're absolutely amazing !
I'm currently reviewing these concepts for passing my exam ! And I was really stuck but I thank God I've found you 😊KEEP DOING FOR US VIDEOS PLEASE 😄

[buckbrown]

Very well put together and presented. Thank you.

[mdasfani]

Thanks for helping Sir, You just revised me the very confusing topic.

[hariharan-yitf]

I hav only now started too look into this bit confusing for me on the objective of reduction but trying to cope with this . Tanx for gd explanation 👍

[junyin]

Thank you so much for your excellent video! I am new to the RF matching network design. This video helps me to understand how to do calculations regarding 3 typical matching networks! I found a minor issue (probably a typo of a number) at 21:36. The Rvirtual should be 4.42ohm rather than 4.46ohm, so the Xs1 should be 4.6*4.42ohm=20.33ohm. Please kindly correct me if you see I am wrong. Thanks!

[bios]

@16.09... If I use absorption method, but assumed values for X and B (series reactance and shunt susceptance respectively) to have + or - value respectively, and by taking - values for X and B in this case (to have series capacitance and shunt inductance), we get the same result...
So, this appears to me like the resonance method is somewhat of a redundant method.

[duahauduc]

In the L-network, will any math calculation change if I swap the position of C and L in the example?

[kareemdaraghma]

what is the best type of matching network and why ?

[Zz_Rooor_FRAME]

hello, whats the job of two stub in double matching network and why the stub is in fixed position not variable ??

[edgaromarmorales]

Hello Carleston. A question. So, in order to work with low Q values and wide bandwidths, do I need to divide the T and Pi network into sub matching networks in series?

[skiewst]

Hy sir, how to get the value of Rvirtual(4.46) in the other L network to get Xs1 ? What Rvirtual use?

[kfhcr]

Series reactor on low side, parallel reactor on high side

[Zz_Rooor_FRAME]

thanks bro, ,
but i will ask you , ,why the band width increase when we increase the number of element ?what the mathmatic
explanation ?

[rickybonanza]

The link to the slide is not working. Too many redirects to fraudulent sites... can you please share a new link?

[khaben]

Sir please if you can do for us a favor and make us a video for impedance matching using transformers as split capacitor circuit before 19th of november which is the day of my exam in this course ! I'LL BE GRATEFUL 💙💙

[ouadietouijer]

thank you very much for the great presentation. I think you have an error in the slide "the L-Network" Q = (Rp/Rs-1)^(1/2) = (Xp/Xs-1)^(-1/2)

[lillyzegarra]

WTF! Is this a reading class because all this cat does is read. I wonder if he watches or listens to his videos because this one is got the worse humming with terrible background noise. My advice is that you invest in a decent microphone, they're not that expensive and stop using whatever crappy microphone you've installed in your system because it makes the video suck. I'm just saying ...

[bios]

@16.09... If I use absorption method, but assumed values for X and B (series reactance and shunt susceptance respectively) to have + or - value respectively, and by taking - values for X and B in this case (to have series capacitance and shunt inductance), we get the same result...
So, this appears to me like the resonance method is somewhat of a redundant method.