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  1. ,,,these would be the results... to see the axial ratio in CST, you should look at "Farfields" section in the simulated results... there should be a drop down list after simulating the design. if you click on that drop down list you should be able to see the axial ratio plot... The default plot is in 3D format, if you want to plot it on polar form, you need to right click on a farfield result and select "Far field plot properties", In the "General" tab select "polar" for the "plot type" and choose the values for "Theta" & "Phi" according to the orientation of your design. Then select "apply" to see the results
  2. Hi buddy...!!!! ,,,what version of CST do you have...??? ,,,can you post the CST file..??
  3. ,,, yes, increase the diameter of the reflector (not too much) and increase the number of directors..!!!! ,,after a certain number of directors, the gain does not increase so much..!!!
  4. ,,, these would be the dimensions... ,,,and this is the CST file....!!! vivaldi rus.cst
  5. I don't think this so-called Vivaldi dipole is very good...
  6. ,,,something like this... 2021213791.pdf
  7. ,,,hi buddy...!!! ,,,from where did you get this Vivaldi antenna( you simulated something like that...???)..??? ,,,maybe this will help you...!!! https://www.changpuak.ch/electronics/Antipodal_Vivaldi_Antenna_Designer.php
  8. ,,,yes, both the central connector and the Teflon insulation can be shortened...!!!
  9. ,,,I considered it sensible to resume Aurel's idea from the beginning and to present a version of the Batwing wire antenna...
  10. V-shaped antenna in the air, without dielectric support...
  11. Two long arms are connected in the shape of V to make a V-antenna. The two long arms are excited with 180˚ out of phase. As the length of these arms increases, the gain and directivity also increases. The following figure shows a V-antenna with the transmission line impedance z=200 Ohm and the lengh of the arm 0,8*lambda, making an angle Φm with the axis, which is called as apex angle.material-FR4 #1.5mm. The main advantage of a V-shaped antenna is its relatively small vertical radiation angle, which is especially important for establishing long-distance communications.
  12. ,,,yes, it is better that way ,than putting a single antenna with two ports (MiMo)
  13. ,,yes,ZTE MF920VS, Frequency 2.4 GHz, Supports Bluetooth 802.11b, 2.4 GHz Radio Frequency ,,,but where does this modem have the connectors for the external antenna...???
  14. gooood,,,for what frequencies were the antennas made...??? the biloop antenna needs a diameter of 40.5mm for the frequency of 2.442 GHz
  15. ,,,maybe you want something like this...