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@LDBuggy2 4 күн бұрын
❤ Thank you Dr. Nezami!
@eranhaicohen4932 19 күн бұрын
Hey, is it possible to upload the HFSS design?
@SIAT2023 22 күн бұрын
could you please suggest to me some RF or antenna books which exactly has clear explanation about filter design using SIW and how Extract the equivalent circuit from this filter (need to the fundamental should I follow for each design )
@SIAT2023 22 күн бұрын
thanks for useful explanations could you please explain to me when should subtract the vias just from substrate and when substract from the whole layers, i asked because some times no result when subtract from just substrate , and i saw both method on different KZfaq
@SIAT2023 25 күн бұрын
THANK you so much for this video , please can you show me how to extract the equivalent circuit from SIW topology [if the SIW cavity has CSRR and IDC (Interdigital capacitor )]that simulated in HFSS or CST ? then sketch it in ADS software
@zainhassansyed2839 29 күн бұрын
Can you please upload the feeding network on ads
@dineshvenkatachalam3764 Ай бұрын
How to design a GPS antenna for L1 & L5 band in stacked configuration.
@RF_Micrwave Ай бұрын
kzfaq.info/get/bejne/qNR5fpCSnbCmeok.html
@zaynebkh5389 Ай бұрын
Hello, thank you for these lectures! I would like to know the equivalent of terminal port Z0 (in HFSS) using CST please, I can find wave impedance which is high for SIW (around 200 Ohm) or Zin using Zmatrix and post processing the equation as for a quadripole (Also around 200Ohm).
@muhammadlatif2400 Ай бұрын
Dear Sir, Your lectures benefit the microwave products design community, please send a PDF of your slides for downloading. Thanks
@WS.WASEEMSUHAIL Ай бұрын
من أجل ذلك تدعم الصوفية القبورية ومن معهم.
@WS.WASEEMSUHAIL Ай бұрын
لك الأجر والثواب إن شاء الله. كل الدعم.
@WS.WASEEMSUHAIL Ай бұрын
بوركت
@Noooname945 Ай бұрын
Thank you for your video. SIW Cal in Apple App store is very useful for SIW design.
@Noooname945 Ай бұрын
Thank you for your video. SIW Cal in Apple App store is very useful for SIW design.
@mounirahmed5430 2 ай бұрын
بارك الله فيك دكتور على لقاء الضوء على هذه القضية التي تطبخ على نار هادئة حتى ياتي وقت انفجارها في وجه الامة و الدول … نفس الشئ في مصر والمغرب … وان كان الامر لا يتعلق دائما بقبور او اضرحة انبياء ولكن توجد الكثير من الاضرحة لحاخاماتهم…. اخوكم من المغرب .
@uumoody 2 ай бұрын
جزاك الله كل خير على فتح موضوع منسي
@shoraimkhan562 2 ай бұрын
When I look for the SIW electric fields, the fields can only be seen on the back side of SIW but not the front. can you please help
@RF_Micrwave 2 ай бұрын
you need to specify what part of the assembly to calculate and display the E-field.
@metrogman2409 2 ай бұрын
The Romans pulled the Temple Mount down, because they were trying to get the melted gold from the Temple items. The brick foundation that one sees was the foundation where the old Roman Fort was located. The old Temple had a stream that feed a pool. This one does not have this.
@RF_Micrwave Күн бұрын
This is what the Jewish historian Josephus told you, which is a lie ...
@SheikShameerS 2 ай бұрын
sir can u explain the length and width calculation for 3 way divider. i am designing feed network for 9 element antenna . pls tell me lenght calculation
@SheikShameerS 2 ай бұрын
hi sir, i have a doubt on length calculation. when i calculate length and width for 50ohm i am getting length=2.42 mm and width=15.66 mm but u r using length=4 mm or sometimes length=2 mm how to calculate the length?
@RF_Micrwave 2 ай бұрын
with DK=2.2 substrate height 0.8mm, at frequency 10GHz, what is quarter wave length ???
@SheikShameerS 2 ай бұрын
@@RF_Micrwave 0.35 mm is crt sir?
@saadhassankiani4827 2 ай бұрын
Well done sir..Thank you for your efforts
@archiekendall 2 ай бұрын
keep making these great videos - very useful and well written
@SheikShameerS 2 ай бұрын
hi sir, how do u calculate the lamda by 4 value? because u r s11 is 3.5 ghz its lamda is 0.0857m .
@Mr_ASIC 2 ай бұрын
اتنمي انك تستمر يادكتور حقيقي محتواك مميز جدا . جودة المعلومة غير مسبوقة
@navidshock96 2 ай бұрын
Dr. Nezami, Many thanks for providing these courses. I'm trying to design a transition from GCPW to SIW around 200GHz. Do you know if the principles in Pozar's book apply to my case? In most of your courses, you only worked with MSL, not CPW.
@RF_Micrwave 2 ай бұрын
GCPW is recent to Pozar, but there are plenty of pubps online on their designs.
@CowPeePooHinJew 2 ай бұрын
How much power can it handle? Any thermal simulations?
@enstien100 2 ай бұрын
I did not get a matlab code to calculate transistion paramters?
@RF_Micrwave 2 ай бұрын
It is in the comment below
@RF_Micrwave 2 ай бұрын
clear all clc % program to calculate the width and length of a tapered % microstrip % line to match micro strip line to substrate % integrated waveguide. % Posted by Mohamed nezami at: % www.youtube.com/@RF_Micrwave % air filled RWG c=3e8 % m/s %a=18.35e %mm WR75 Ku Band %b=9.175e % mm a=19.05 %mm WR90 X band b=9.525 %mm fc_TE10=c/(2e-3*a) fc_TE20=c/(a*1e-3) %% %SIW e_r=2.2 %DK % RO5880 f=10e9 Lambda=1000*c/f %meters Lambda_g=Lambda/sqrt(e_r) %meters % The equivalent SIW width “Ae” is the width of rectangular % waveguide whose modes exhibit the same propagation % characteristics of the SIW modes a_dielectric=a/sqrt(e_r) % let the via be a 10 mil diameter via or 0.25mm P_via= 1 % VIA pitch D=0.5 % VIA diameter %integrated waveguide width a_SIW=a_dielectric+(D*D)/(0.95*P_via) % length of taper line Quarter_wave_length=Lambda_g/4 % cutt off of SIW fc_SIW=(c*1e3/(2*sqrt(e_r) ))/(a_SIW-D*D/(0.95*P_via)) %% Calculate the Taper width and length nu=376.73; h=0.8; % RO4350 w=0.0001:0.1:10; %variable to find er=e_r; %permitivity of the substrate ae=a_SIW; %siw width z=w./h; f1=120*pi./(nu*h.*(z+1.393+0.667.*log(z+1.444))); b=(er+1)/2+((er-1))/2.*(1./sqrt(1+12./z)); f2=(4.38/ae).*exp(-0.627.*(er./b)); % w/h>1 figure(1) plot(w,f2,w,f1,'red'); title('plot(w,f1,w,f2); w/h>1') xlabel('W') %% % %w/h<1 figure(3) f3=(60/(nu*h))*log(8./z+0.25.*z); plot(w,f3,w,f2) title('plot(w,f3,w,f2); w/h<1') xlabel('W') % find zero crossing of Z_SIW-Z_MSL Wt_ZCF=[ 1:length(w) ; w ; (f1-f2)].'; Index_ZCV=find(diff(sign(Wt_ZCF(:,3)))); Wt_optimal_vec=Wt_ZCF(Index_ZCV,:,:); Wt_optimal=Wt_optimal_vec(2)
@SheikShameerS 2 ай бұрын
hi sir, how do u calculate the lamda by 4 value? because u r s11 is 3.5 ghz its lamda is 0.0857m .
@theseshadesgucci9354 2 ай бұрын
awesome work ! love the explanation
@RF_Micrwave 2 ай бұрын
clear all clc % program to calculate the width and length of a tapered % microstrip % line to match micro strip line to substrate % integrated waveguide. % Posted by Mohamed nezami at: % www.youtube.com/@RF_Micrwave % air filled RWG c=3e8 % m/s %a=18.35e %mm WR75 Ku Band %b=9.175e % mm a=19.05 %mm WR90 X band b=9.525 %mm fc_TE10=c/(2e-3*a) fc_TE20=c/(a*1e-3) %% %SIW e_r=2.2 %DK % RO5880 f=10e9 Lambda=1000*c/f %meters Lambda_g=Lambda/sqrt(e_r) %meters % The equivalent SIW width “Ae” is the width of rectangular % waveguide whose modes exhibit the same propagation % characteristics of the SIW modes a_dielectric=a/sqrt(e_r) % let the via be a 10 mil diameter via or 0.25mm P_via= 1 % VIA pitch D=0.5 % VIA diameter %integrated waveguide width a_SIW=a_dielectric+(D*D)/(0.95*P_via) % length of taper line Quarter_wave_length=Lambda_g/4 % cutt off of SIW fc_SIW=(c*1e3/(2*sqrt(e_r) ))/(a_SIW-D*D/(0.95*P_via)) %% Calculate the Taper width and length nu=376.73; h=0.8; % RO4350 w=0.0001:0.1:10; %variable to find er=e_r; %permitivity of the substrate ae=a_SIW; %siw width z=w./h; f1=120*pi./(nu*h.*(z+1.393+0.667.*log(z+1.444))); b=(er+1)/2+((er-1))/2.*(1./sqrt(1+12./z)); f2=(4.38/ae).*exp(-0.627.*(er./b)); % w/h>1 figure(1) plot(w,f2,w,f1,'red'); title('plot(w,f1,w,f2); w/h>1') xlabel('W') %% % %w/h<1 figure(3) f3=(60/(nu*h))*log(8./z+0.25.*z); plot(w,f3,w,f2) title('plot(w,f3,w,f2); w/h<1') xlabel('W') % find zero crossing of Z_SIW-Z_MSL Wt_ZCF=[ 1:length(w) ; w ; (f1-f2)].'; Index_ZCV=find(diff(sign(Wt_ZCF(:,3)))); Wt_optimal_vec=Wt_ZCF(Index_ZCV,:,:); Wt_optimal=Wt_optimal_vec(2)
@enstien100 2 ай бұрын
Thank you
@SheikShameerS 2 ай бұрын
hi sir, u r videos are so useful. Can u make video on using pin diode at feeding network for switching the antenna array.
@RF_Micrwave 2 ай бұрын
kzfaq.info/get/bejne/Z9yJjaenr7DIhZc.html
@SheikShameerS 2 ай бұрын
@@RF_Micrwave thank you sir
@CowPeePooHinJew 2 ай бұрын
AA, Can you do Coax to waveguide inline? Ka-band, please.
@Mr_ASIC 2 ай бұрын
شكرا يا دكتور
@omrid23 2 ай бұрын
hi how you get L90=13.94
@RF_Micrwave 2 ай бұрын
quarter wave line length in substrate
@hamidrezatakfallah9090 3 ай бұрын
Hello Dr Nezami Where is Port2 in the structure?
@akhileshverma7105 3 ай бұрын
Thanks for sharing
@akhileshverma7105 4 ай бұрын
Great
@najmaissam6759 4 ай бұрын
Thank you
@saadhassankiani4827 4 ай бұрын
This is amazing work. Really helpful
@srimitacoomar8272 4 ай бұрын
Very knowledgeable
@iamswastik 4 ай бұрын
Wonderful! Thank you.
@iamswastik 4 ай бұрын
Waiting for your next video on tapered antenna illumination... Thank you so much!
@RF_Micrwave 4 ай бұрын
Its out, check it
@djgandb553 4 ай бұрын
Hello Mr and thank you again for your video which I find very useful. I understand certain designs better. a question, how do we decide to use an equal T junction or an unequal one?
@djgandb553 4 ай бұрын
very interesting subject , thank you sir . i have a question, i want to make a feed network for a bi-band wifi antenna 2.4 and 5.8 Ghz how i can enhance the bandwith oh the divider to cover this two frequencies?
@RF_Micrwave 4 ай бұрын
use multi section Wilkinson dividers
@najmaissam6759 4 ай бұрын
very interesting ssur
@nassirfer7819 4 ай бұрын
Thanks for the video can you please give us the name of the book?
@bsdmry 4 ай бұрын
Hello! And thanks a lot for this lecture. Could you please pointed me out, how can we get the coefficients (like 1.12, or 0.38), mentioned on 25:33? Should we calculate it, or find out using the experiments in an EM simulator?
@yaobing-qw4rj 5 ай бұрын
Filter design and debugging (LC cavity microstrip waveguide bandpass, low-pass, high pass) duplexer design 10 years of experience in HFSS simulation design and engineering, with a design frequency of terahertz. All designs are based on practice and guided by theory. Remote after-sales service is available, and long-term cooperation can provide on-site service!
@user-oq9ws6pz9y 5 ай бұрын
Thank you very much for the tutorial. I am curious about the attenuators between stages and what is the selection criteria?
@user-oq9ws6pz9y 5 ай бұрын
That is, literature recommendations.