Welcome to WIFI Antennas

Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customize your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more! This message will be removed once you have signed in.


  • Content count

  • Joined

  • Last visited

Community Reputation

6 Neutral

About Andrew77

  • Rank
    Advanced Member
  1. I already posed a question about this antenna, I made some simulations, have you succeded to simulate it?
  2. mmm interesting, but seems lumped port, I don't understand well... Do you have this example in .cst format?
  3. Sure, The antenna is not matched.. Here is just to check the settings... CST_Article138_RFID Reader-Coil, 13.56 MHz.pdf
  4. I past it again... Simulation are same as mine Did you use Transient solver? if not what mesh? Your bounding box how big is? NFC_13_56_MHz.cst
  5. here is the original antenna: NFC_13_56_MHz.cst
  6. Hi dear,how are you? I made antenna by myself, I understand that corners must be rounded but I started with this version to have a simpler meshing... The version with rounded corners gives me quite the same inductance (around 1.24 uH) I'm looking for the examples inside CST (13.56 mhz coil ) but I have a big db file for examples in CST directory so I don't kown how access Andrea
  7. Hello, I'm trying to design a NFC antenna @13.56 MHz for a reader, Antenna should have around 1,24 uH of inductance as simulation and calculation verified, but i'm not very sure about the set-up of CST (Frequency domain solver) I don't see Self-inductance up to 60 MHz I don't find The example given in the Examples of CST: "RFID Reader-Coil, 13.56 MHz CST example" could someone upload? (CST 2019) Many thanks NFC_13_56_MHz_V2.cst
  8. OOK thanks!
  9. could you post the .cst file for this antenna? thanks
  10. Seems that VSWR and gain go to the opposite direction!
  11. ,,,under simulation the real antenna... Dual_Band_Flower_Pot_2.cst
  12. Ah! OK, I thought the spiral worked as a choke only... I will try
  13. yes must be so, the coaxial cable is inside a pvc 25mm conduit tube, anyway its effects are very low
  14. dual-band-half-wave-flower-pot The simpler version, Looks like to have the higher gain @410 MHz VS 430 MHz Dual_Band_Flower_Pot.cst
  15. Yes, I fix it; 5,5M Meshcells, lot of time to simulate...