@@LYSStuff Forgive me for asking a off topic question… In practical application, is it necessary to have a layer between coil and sma to impedance match? E.g 140-100-50ohms? Thank you.
at 5:44 When in the “rotate face” part, he says “Error” and that he wants a third point? Can you tell me what steps you took in this part to be able to rotate the face
Why is the result on CST so bad after following design equations for the helical antenna? Also how did you come up with the new values to update/fix the simulation? You just copied the demo which defeats the point of using the design equations in the first place
while defining the line1 at time (04:22) of your video, how do you decide the v2 should be 1.95, is it okay to use with a 3.3 GHz frequency, or should change it?
Hi, For v2 1.95 is follow the d2 diameter divide by 2. for 3.3 GHz please use the helical calculator in description to calculate it. Then find your d2 value. Hope it helps. :)
@@LYSStuff okay, thanks! also, the model didn't run due to the limitations of the student edition in which the maximum cad faces can't exceed 500, is there any way to reduce them?
@@KavyaAgarwalbec hi, you could try to reduce the mesh setting. But if still 500 limit, then no choice. Limitation of student version. You also can try look for helix antenna design in CST example file.
@@LYSStuff You use the 50 ohm coaxial cable, but the impedance of this antenna is 150 ohm based calculation. if just change the coil diameter and spacing of this antenna, the S11 can become ideal but the axial ratio is shown bad. I try to build the antenna model and i am wondering about this. Thanks for your reply.
@@ZAX_3 hi, may I know how worst is it... It should be below 3dB. Else you can just tune again the antenna coil diameter. There is no direct specific calculation for this.
Hi, For S actually is the turn of helical antenna which to increase the gain of helical antenna. Coil diameter also depend manufacturer or our resources we have which type of diameter. Thicker can support higher power. Both of S and coil diameter also depend on your application. compact or big antenna required for ur application. Therefore, there is no fix number of S or Coil diameter for 2.45 GHz design. How to Design 2.45 GHz Helical Antenna in CST you can use the calculator here to get the number of S and coil diameter. Helical antenna Calculator 1. www.changpuak.ch/electronics/calc_12a.php 2. daycounter.com/Calculators/Helical-Antenna-Design-Calculator.phtml Coaxial line Calculator www.everythingrf.com/rf-calculators/coaxial-cable-calculator Hope it helps. :)
@@LYSStuff thanks for the answer sir but sorry, is it okay for me to ask for a demo helix antenna design file for me to learn? I will compare it with the design I made, it seems that the design I made is still wrong, not right at 2.4 GHz. apologies if you would like to request the file, thank you
Dear, could you desigin a LORA 433MHZ Helical Antenna, I am devleloping a IoT project , PCB has been finished ,but I need a suitable antena to keep the long distance, the antena should be installed in the box near the PCB. only a small space to place the antena. if you could help me to desigin and simulate, we could contact with email.
@@LYSStuff I followed the guidelines and designed the antenna but i have a problem with the port. When i simulate the the antenna I get this error: "port 1 is inhomogeneously filled with the first 3 mesh cells". I'm using a strip instead of wire in my design and the ground plane thickness is 2 mm it worked previously when the ground thickness was 10 mm but i have to use 2mm.
It works exactly as your video. Thanks a lot.
This helps me a lot. TQ
Welcome and thanks for your support
Very useful, you're an expert. Thanks.
Welcome and thanks for your support..
@@LYSStuff Forgive me for asking a off topic question… In practical application, is it necessary to have a layer between coil and sma to impedance match? E.g 140-100-50ohms? Thank you.
Hii can you send me your travaille cause i have problème in cst thebsimulation is very slow
What is travaille?
Hi, Yes, you may refer to Microwave101 helix antenna theory.
at 5:44 When in the “rotate face” part, he says “Error” and that he wants a third point? Can you tell me what steps you took in this part to be able to rotate the face
Hi, I not sure what you mean. But the video shown complete step of the design.
same problem
Which one is better: CST or Ansys Maxwell?
Hi, for me, CST easy to Use.
@@LYSStuff thank you for fast response and sharing your experience. Last time I uses Maxwell for years. Now, I am going to move to CST.
@@robinhutnc2392 You are welcome and you may check out my CST tutorial playlist too ruclips.net/video/uGaiYMQoDYY/видео.html
Hope it helps. :)
hello sir can you please design the strip helical antenna wrapped on the cylindrical tube
Hi, OK. Stay tune.
@@LYSStuff sir when you design the strip helical antenna
Why is the result on CST so bad after following design equations for the helical antenna? Also how did you come up with the new values to update/fix the simulation? You just copied the demo which defeats the point of using the design equations in the first place
The design equation is theoretically to achieve the desire frequency. But is not perfect, then we just do some tuning to make the frequency swifting.
while defining the line1 at time (04:22) of your video, how do you decide the v2 should be 1.95, is it okay to use with a 3.3 GHz frequency, or should change it?
Hi, For v2 1.95 is follow the d2 diameter divide by 2. for 3.3 GHz please use the helical calculator in description to calculate it. Then find your d2 value.
Hope it helps. :)
@@LYSStuff okay, thanks! also, the model didn't run due to the limitations of the student edition in which the maximum cad faces can't exceed 500, is there any way to reduce them?
@@KavyaAgarwalbec hi, you could try to reduce the mesh setting. But if still 500 limit, then no choice. Limitation of student version. You also can try look for helix antenna design in CST example file.
Why are the simulations run with your cst model not the same as yours?
Hi, Maybe attached file is after or before tunning
@@LYSStuff But the parameters of the model are the same as in the video
@yuxia-mh4pq not all parameters are defined in the parameter list..
@@LYSStuff All right, thanks.
Please may i get the file of final result you obtained in this video of this paper
Hi, no problem. email me lysstuff888@gmail.com. then I will send you the demo file.
If he sent the file to you can you share it with me
@@ahmedsayed7342 the file can find in the description.
Hi， the impedance of this antenna is 150 ohm， how can u achieve the impedance matching?
Hi, you may refer to 10:47. There have shown how to match the 50 ohm, important is the SMA 50 ohm. And 11:50
@@LYSStuff You use the 50 ohm coaxial cable, but the impedance of this antenna is 150 ohm based calculation. if just change the coil diameter and spacing of this antenna, the S11 can become ideal but the axial ratio is shown bad. I try to build the antenna model and i am wondering about this. Thanks for your reply.
@@ZAX_3 hi, may I know how worst is it... It should be below 3dB. Else you can just tune again the antenna coil diameter. There is no direct specific calculation for this.
how to get number of S and coil diameter? thus get S- par 2.45 GHz?
Hi, For S actually is the turn of helical antenna which to increase the gain of helical antenna. Coil diameter also depend manufacturer or our resources we have which type of diameter. Thicker can support higher power.
Both of S and coil diameter also depend on your application. compact or big antenna required for ur application. Therefore, there is no fix number of S or Coil diameter for 2.45 GHz design.
How to Design 2.45 GHz Helical Antenna in CST
you can use the calculator here to get the number of S and coil diameter.
Helical antenna Calculator
1. www.changpuak.ch/electronics/calc_12a.php
2. daycounter.com/Calculators/Helical-Antenna-Design-Calculator.phtml
Coaxial line Calculator
www.everythingrf.com/rf-calculators/coaxial-cable-calculator
Hope it helps. :)
@@LYSStuff thanks for the answer sir
but sorry, is it okay for me to ask for a demo helix antenna design file for me to learn? I will compare it with the design I made, it seems that the design I made is still wrong, not right at 2.4 GHz.
apologies if you would like to request the file, thank you
@@huvat-wi7ve Hi, no problem. email me lysstuff888@gmail.com. then I will send you the demo file.
@@LYSStuff Hi, I have emailed to you too. Please share to me the demo file too. Thanks 🙏
@@annemirka5612 Hi, I have updated the download link in this video description. You may click the link to download the CST design.
i have problème in simulation is verry slow
Hi, this simulation is take some time.
@@LYSStuff ah ok merci
Dear, could you desigin a LORA 433MHZ Helical Antenna, I am devleloping a IoT project , PCB has been finished ,but I need a suitable antena to keep the long distance, the antena should be installed in the box near the PCB. only a small space to place the antena. if you could help me to desigin and simulate, we could contact with email.
Hi, sorry, I have no idea on this.
hello, I want some help with designing 437 MHz helical antenna. can i contact you?!
Hi, just follow the video guideline, use the calculator to get the antenna dimension for the desire frequency.
@@LYSStuff
I followed the guidelines and designed the antenna but i have a problem with the port. When i simulate the the antenna I get this error: "port 1 is inhomogeneously filled with the first 3 mesh cells".
I'm using a strip instead of wire in my design and the ground plane thickness is 2 mm it worked previously when the ground thickness was 10 mm but i have to use 2mm.
Oh my, I have no idea why that error occur after change the thickness. Maybe it overlapping with other component.