CST Tutorial: Complete Vivaldi antenna design in CST part1

[@isahmusadanjuma5271]

Nazmul may God reward you abundantly. Thanks for this gigantic effort.

[@tensorbundle]

thanks a lot for your good wish

[@ahmedhelmirefaie6784]

thank u so much for this massive effort , u deserve much good :)

[@kutluayucar2026]

Hı teacher ı am going to design this antenna but ı cant calculated this parameters.I researced but ı dont find a enough information about that.Could you help me ?

[@MsFazzy81]

Thanks! I've been looking for this!

[@tensorbundle]

welcome

[@MarkPark94]

Extremely useful thank you!

[@tensorbundle]

:)

[@sajjad8201]

Thanks too much for uploading this vedio!!

[@md.tanvirrahmanjim2542]

upload basic Mimo antenna design?

[@Akshay-yq7ml]

Hi, Can you please tell how you have arrived on those parameter values?

[@alphonsosamasius7015]

Thank you. I am currently not designing vivaldi but this is very informative on how to navigate through CST features. If you wouldn't mind I'm asking, why do you use PEC instead of copper in the modelling?

[@tensorbundle]

Alphonsos Masius Alphonsos Masius Copper's conductivity is so high it can be regarded as PEC or perfect electric conductor. You can use copper but simulation results are 99% similar as those of PEC.

[@soulefbe6703]

would you please make a video for complete vivaldi antenna in HFSS ?

[@tensorbundle]

Please visit facebook.com/tensorbundle/ and write down your requested video topic. Don't forget to like the page too! Thank you

[@priscillakadja1897]

Do you have any tutorial teaching how to make the Vivaldi antenna on Hfss?

[@mirzadaniel0711]

Thank you for your hard work, Mr. Nazmul Hasan! I've been looking for this for ages. Btw, can you provide me any links/references for the equation to create the curves? Thank you in advance. :)

[@tensorbundle]

Study the paper by PJ Gibson, "The vivaldi aerial''. He is the father of vivaldi

[@mirzadaniel0711]

Thank you very much. Really appreciate your help. :)

[@akshitagupta1383]

tensorbundle plz tell us the way to increase the bandwidth of this antenna..what parameters are required to be affected to get the ultra wide bandwidth

[@hichammedkour474]

Thank you very much

[@baraafaiq]

Excellent job

[@liorma1995]

thank you very much, you extermly helped me

[@tensorbundle]

welcome

[@UsmanUsman-gn9tx]

how we use it to acheive iltra wide band applications

[@adamujabire36]

where can i find the remaining of your videos

[@tensorbundle]

Visit my KZbin channel. You will get all videos there. Don't forget to subscribe for not to miss any new video!

[@adamujabire36]

i have seen them please i need your help am working on MIMO antennas for UWB application using CST i need a guide please

[@adamujabire36]

My question is for example if my frequency range is 1 to 12GHz then in the field monitors which values should i suppose to insert and for CST there is no solution frequency how can i deal with this kind of situation? thank you

[@tensorbundle]

Yes, in CST, it has no solution frequency like HFSS. But you will insert the frequency points in far-field monitor at which you would like to observe antenna's far-field patterns. Say, out of 1-12 GHz range, you are only interested at 3,6,9 GHz. Simply add these three in far-field monitor.

[@adamujabire36]

Thanks alot

[@MsFazzy81]

I have a question, in Vivaldi antenna, we don't need to have a ground plane?

[@tensorbundle]

no

[@MsFazzy81]

thanks!

[@Theconnecteduniverse]

greatly helpful

[@praveenhaandiassistantprof9351]

Hii sir I'm trying to extrude the file.. But it's happening

[@TheDiden1978]

Thanks very interesting

[@androidoptimusprime]

What does the values of 0.05, 1.1, and 3 mean?

[@tumieengineering5908]

So, 3 = lambda/2. Where lambda = c_ /f_0, c_ being the speed of light, f_0 being 50 GHz. the 1.1 is slant rate in the trace curve where y=se^(rx), where s = 0.05. I am not sure how s is calculated but when I find it I'll hopefully remember to let you know.

[@Ferproko]

How can i export my model from cst to a pcbdoc file?

[@diptadutta4790]

Grateful

[@pratulnijhawan4386]

Sir,will it affect the antenna performance if we use radial kind of feed in microstrip to slotline transition?

[@tensorbundle]

That "radial" structure is called radial stub.. it is perfectly fine to use it

[@alimuddinmanda1918]

thanks a lot, can you show me the tutorial or picture for feeding the Sma Connector to vivaldi antenna above ? i try to realize it for 2.4 Ghz Freq

[@tensorbundle]

In this design of vivaldi, you don't need a CAD model of SMA in CST to connect the microstrip line to SMA. "Waveguide port" takes care of it. Once you fabricate the vivaldi then you have to electrically solder the SMA connector to the microstrip line. kzbin.info/www/bejne/j3rbkmt7i8R5eLM

[@Ferproko]

I have the problem that my substrate is too thick (h=3.18mm). Do you know how can i use a SMA connector in it? Thanks, Very useful your videos

[@tensorbundle]

If you use microstrip as feeding line in your antenna,you have to use pcb mount type SMA connector. in that case thickness(3.18mm) is too high for the connector's supportive notches to fit properly with your substrate. How about changing feeding mechanism? Try to use thru hole mount type or panel mount type sma connectors

[@Ferproko]

I found a SMA connector that is proper for my substrate. The only thing that a i have to do is to snip the two grounding pins, that are in line with the central pin, so i can solder only the central pin to the microstrip. Do you know if it's necessary to simulate the SMA connector in CST?

[@tensorbundle]

Outer conductor of coax is actually in connection with SMA's ground pin nothces which we solder to the ground plane of antenna. If you snip out the two ground notches of SMA that means you are disconnecting the ground plane connection to the coax as well. SMA's four supportive notches not only provide them mechanical stability but also connects the ground plane to the outer conductor of coax. Don't snip them off, that's incorrect.

[@MehediHassan-oy6rz]

Can you please share the designed file ? 😎😎😎😎

[@ShashiKumar-sn5fg]

thank you very much sir. it helps me a lot to learn about vivaldi antenna. sir actually i have to design vivaldi antenna for 2GHZ operating frequency. can you please help me to design? please sir.. ?? actually i am not able to take Dimensions.

[@UsmanUsman-gn9tx]

how to calculate parameters

[@Ferproko]

Thanks for your videos! They were very usefull. We actually made the antenna, using your videos as starting point. It works pretty well, S11=-33db at 2.5Ghz, VSWR=1.05 at 2.5Ghz, and BW=1Ghz, that are values that we measured with an network analyzer. drive.google.com/open?id=0B_RECWkkPaD-bUpOTFNDeVpRbXM drive.google.com/open?id=0B_RECWkkPaD-bmdZZWhtR3pVYms

[@tensorbundle]

I just looked at your vivaldi. Nice work. Congrats!

[@khaledadel8417]

can i see ur design .. i want to know how to do the s11 paramater

[@dgnsevval18]

Hello I need to design a vivaldi antenna working at 2.1GHz and 1.8 GHz , but I could not calculate the parameters,can you help?

[@MuhammadRiaz-xj9cp]

any one send me paper works???

[@ShashiKumar-sn5fg]

sir can you give me your mail id so that i can chat with you over there?? thanks a lot sir..

[@tensorbundle]

Shashi Kumar sure. You can post your problem and look for suggestions by others in facebook.com/groups/antenna.lab/