Frequency Selective Surface Design in CST

[@ikraahmed3964]

That was really helpful. i am currently doing my final year project on shielding with fss structure. This really came in handy. Thanks!

[@SimulationMaster]

Glad it was helpful!

[@sagivijayaramaraju1153]

@@SimulationMaster hii sir. In this we have design a circular loop. But in order to design normal cross(or Jerusalem cross) what are the steps that needs to be taken? Could you please give step by step procedure to get a normal cross symbol on the substrate? Please help. Thanks.

[@garthdc2622]

Thanks for your video. How would I set up simulation of a full structure FSS, (say 20 x 20 unit cells) in the transient solver please? I think I’d use a waveguide port on each side of the structure but what boundaries would you suggest I use please? Thanks.

[@solomonmingle8716]

I have enjoyed your videos,you have impress me a lot.I will buy you a coffee

[@SimulationMaster]

Thank you for the offer. If you come to Istanbul, I can also buy you a Turkish Coffee.

[@solomonmingle8716]

Do you have email i can discus a simulation with you?

[@kavithasenthilkumar4533]

At 12:53, from the red curve I infer that at 7.94 GHz it will reflect to backside and also transmit at the same frequency how can it transmit and reflect at the same frequency. Am I understanding it correctly. Can you help to give clarity

[@sciencelearning2326]

Nice explanation, thank you , I hope you put more videos about simulation of metamaterials with patch antenna

[@meghjitmajumder3468]

Very useful video bcz there're very few videos I've found on FSS.

[@SimulationMaster]

thank you for your kind reply.

[@er.shailendrasingh7731]

You have given a really nice explanation about a horizontal and vertical polarized plane waves result in understanding. Kindly make one video for the simulation of metamaterial unit cell

[@tapastewary5954]

Thank you very much. If you can upload a video showing how to import FSS into antenna design and simulate

[@joohigarg8324]

Hello sir, Very nice demonstration. Kindly upload lecture Microwave Absorbers/Rasorbers using CST. Want to find out how to analyze TE and TM mode etc. Thanks

[@ilman1999]

Why did we use PEC for FSS not a copper(annealed)??

[@SimulationMaster]

good question. For the initia adjustment there will be no difference between them in terms of the requency response. So to decrease simulation time I use PEC. In the later stages of the project you can use the actual material. It will have small effect on the frequency responce, and wil add loss.

[@esthergovind9500]

Nice video sir.I have one doubt you have arranged 4 fss structure with some spacing.What is the space between each fss structures?

[@douglasbowe3805]

Hi, I am working to make a basic square patch element (group 3) that can be used as a low pass filter for frequencies

[@joohigarg8556]

Above simulation stands for Patch type or aperture type FSS?

[@hedimiltonalmeida6287]

Hi! I didn't get to generate the variations of parameters after simulation. Could you tell how to do that? e.g. Making x constant and varying r_out and other parameters we have that results, as you show us in the video. I thank you in advance.

[@hedimiltonalmeida6287]

If you have whatsapp or another way of communication I would like to bring you some doubts of using this soft for my final work at university.

[@Styraihan]

@@hedimiltonalmeida6287 can you help me sir? This about design or irs thankyou

[@maryammokhayer4793]

Nice video and great explanation, thank you....sir can you please explain ...how to draw equivalent circuit of any FSS ? or how to sketch admittance of a surface impedance structure?

[@HuaWei-ws6ye]

Thank you very much, very usefull informations. How can i simulate Hybrids, rat-race, magic tee in CST? or, Are they just trace?

[@SimulationMaster]

Yes you can definitely simulate them.

[@narayanarao9653]

which one is considered as s parameter value

[@venkatramansampath]

Is the reflection coefficient (S11) denoted by SZmax(1),Zmax(1)? What is the transmission coefficient denoted by?

[@SimulationMaster]

Transmission coefficient is denoted by, SZmax(1),Zmin(1)

[@venkatramansampath]

@@SimulationMaster Thanks. I have one more query: There are layers of array. The top layer array is for 8-10GHz and the bottom layer array is for 5-6GHz. If an FSS is designed and acts as ground plane for the 8-10GHz, then should the designed FSS have maximum reflection coefficient for the 8-10GHz and minimum transmission transmission coefficient for 8-10GHz?

[@minakshimakkar9249]

Hello sir, i want to design c shaped resonator. Could you please help me?

[@goshi882006]

Dear can you guide on how to draw beta vs freq curve from CST for disperaion diagram of a unit cell for an EBG structure

[@SimulationMaster]

Yes you can. You can use Post Processing tool to access and draw curves.

[@hamzaasifkhan8421]

Hello. I start working on FSS, if you interested to collaborate, please knock me, thanks

[@nooblunux1132]

can you please give the book link that you told as a reference in this video.....?????

[@SimulationMaster]

You can download the book from the link below: libgen.rs/

[@Good34789]

How the layer FSS is simulated

[@Good34789]

Could u please simulate other fss structures in cst

[@SimulationMaster]

yes of course. Do you have anything specific in your mind?

[@mrittikarahman0111]

Please also design a helical antenna Plzzzzzzz

[@peterkern7757]

Hi Sir, can you share your ebook download access of the book that called Frequency Selective Surfaces

[@SimulationMaster]

Can you share the email with me. I will send you a link.

[@neelmaansari2018]

I'm trying to replicat a research paper on CST, which is "Easily Optimizable Dual-Band Frequency-Selective Surface Design ". Can you make a tutorial on it.

[@hamzaasifkhan8421]

Hello. I start working on FSS, if you interested to collaborate, please knock me, thanks

[@hussnainmohiuddin9871]

what is your email address I am working on dual band fss and need your assistance

[@islem9973]

Thnx for the great video and if you could plz give me the link of the bock you showed in 3:00

[@SimulationMaster]

libgen.rs/

[@madhurisahal4282]

Where to extract the Freq - wave no plot

[@evlabd]

Hı, i will design metasurface transition filter between 48 GHz and 59 GHz. Each GHz frequency i will design in the cell but i do not know shape and calculation. Can u help me and give me mail adress

[@gopugnair11]

Can u provide a presentation vedio on FSS design using GNU OCTAVE tool?

[@SimulationMaster]

Unfortunately I don't know about his GNU Octave tool. Can you share with me the link where I can find that.

[@gauravupadhyay5293]

Nice video and great explanation...sir can you please explain ...how to draw equivalent circuit of any FSS ?

[@SimulationMaster]

dear Gaurav, I will make a video about this topic in my future videos. stay tuned ..

[@gauravupadhyay5293]

@@SimulationMaster sir Thank you so much for your reply ...when you will upload it.. any expected time limit.??? I am so confused in equivalent circuit ..how L&C decide wide band response...???

[@vutrunghieu7184]

hello sir ,how does fss work

[@rashmibehera3645]

How to find the reflection phase?

[@SimulationMaster]

you can directly look at the reflection parameters like S11 and S22 and plotting their phase you will get the reflection phase.

[@arieaji7145]

nice video and good explanation. I am currently working on THz antenna based on FSS with Floquet port in CST. Could you please replicate the simulation from this paper "Broadband THz Uncooled Antenna-Coupled Microbolometer Array-Electromagnetic Design, Simulations and Measurements" from IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, VOL. 2, NO. 3, MAY 2012. It is using HFSS simulator and I wish you can also simulate this in CST. many thanks

[@SimulationMaster]

Dear Arie, I will try this.

[@hichammedkour474]

Thank you.

[@SimulationMaster]

You're welcome!

[@A00700]

man i love u.. thanks

[@oops1180]

Great ..... Please where is the link?

[@SimulationMaster]

Dear Bilal, I have added link, you can download it from the link.

[@oops1180]

Thanks bro appreciate 🙏

[@sunyas436]

Thank you very much

[@srabontysoily5185]

sir, iti is very useful video, thanks. Could you please upload any terahertz antenna model based on silicon substrate by CST? Please reply

[@SimulationMaster]

do you have example paper of can you please be a little bit specific?

[@srabontysoily5185]

@@SimulationMaster may I email you ? is there any email id?

[@srabontysoily5185]

@@SimulationMaster thanks I will send you email

[@srabontysoily5185]

@@SimulationMaster sent email, please check

[@israashihab83]

thank you, is the book for free download

[@hamzaasifkhan8421]

Hello. I start working on FSS, if you interested to collaborate, please knock me, thanks

[@nonanona5093]

I need help please

[@SimulationMaster]

what do you need help for?

[@subhoartwork]

I didn't find such good explanation in any other video in youtube. I was searching for a video on coding metasurface. can you please make one video on that. Example paper : DOI:10.1109/JPHOT.2018.2866490. Please help.

[@hamzaasifkhan8421]

Hello. I start working on FSS, if you interested to collaborate, please knock me, thanks

[@sciencelearning2326]

Why you chose Frequency solver not time solver

Because in Grequency Solver we can use Flloguet Boundaries and unit cell boundary conditions use these Floguet equations.

[@sciencelearning2326]

@ OK , but when i want simulate Antenna in Time domain with these CELLs as reflector what should i do?

[@SimulationMaster]

@@sciencelearning2326 You should use Time-domain solver. Using time-domain will not change the results, but using FSS with antenna disables 'Unit Cell Boundary' conditions. So your bandwidth and S11 parameters of the FSS will change under these conditions. You must take into account this situation and use enough Cells to ensure proper operation of your FSS.

[@sciencelearning2326]

Simulation Master Your explanation is clear, now I understand you very well. So thank you very much friend

[@SimulationMaster]

@@sciencelearning2326 your welcome Tarek