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Admin

Administrators
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Everything posted by Admin

  1. CST

    Okay, now post the images with the results obtained...!!!
  2. CST

    Okay, then post the results...!!!
  3. CST

    I think it's easier to post the CST file....!!!
  4. CST

    ,,,but you need to show the positioning of the power point and the thickness of the PCB...!!!
  5. CST

    ,,,hi buddy...!!! welcome to this forum...!!! if you can give some dimensions it would be better! Gerber files are from CST-Studio...??? And why don't you write in normal letters?
  6. The antenna is fed by a dipole at the midpoint between the two reflectors and yields useful gains of 10-15 db. ,,,just that impedance matching must be done....!!!
  7. ONLINE storeEFPV specializes in the sale of high-quality antennas and accessories for FPV drones, video and radio systems... https://efpv.in.ua/antena-batwing This antenna is an indispensable tool for the military, special services and organizations operating in extreme conditions where maximum reliability and efficiency of wireless communication is required. Frequency range 750-1020 MHz Beam angle 60° Connector SMA-F Material aluminum Gain 10 dBi Size 355*235*110 mm Weight 556 g
  8. Maybe this suits you...!!!
  9. What does "11 degrees" mean to you?, is it somehow angular width? ,,,,anyway, you can choose from here...
  10. "I think this is a lie."
  11. Sukesh,I don't understand what you want....!!!! ,,,you want a 4-core sector antenna like this...???
  12. ,,,here Harry36 did some simulations....
  13. ,,,okay,thanks buddy....!!!
  14. 4,5-5.4 GHz ; 21 dBi....all dimensions...!!!!
  15. Aksonx2, I see you have this MAPLE antenna, can you give some dimensions....???
  16. A method to improve the gain of axial-mode helical antenna is proposed. This method involves a parasitical circular metal disk,which is installed on the front of general axial-mode helical antenna and is apart from the helical line. A circular current whose phase lags behind that of helical line current appears,which brings a more concentrated radiation field. Consequently,the antenna gain is improved, Based on the simulation results,an antenna array model fed independently is proposed.This model gives an excellent explanation of the radiation characteristic of helical antenna, Both the simulation and experiment results show that for obtaining the same gain,the antenna length in this new method is only 71% of that in traditional helical antenna.The reduction of antenna length favors the miniaturisation of antenna. In addition, this method has a little effect on the bandwidth of antenna, so it can be widely used in the design of helical antenna element and array.
  17. ,,,,for which this MiMo antenna can cover the frequency band 2.1-2.6 GHz ... ???
  18. PCB UWB antenna Antrad-11 0.6–8.0 GHz UWB highly directional PCB antenna Antrad-11 (RVS-A2) can be used in radar, radio monitoring and radio communication systems operating in 0.6-8.0 GHz frequency bands. Can be used as the measuring antenna. Gain up to 13 dBi (fr.= 3 GHz) Impedance 50 Ohm VSWR not more than 2.5:1 Antenna size 325 х 200 х 1.5 mm Connector SMA (male/female) Material FR4 an attempt of mine...
  19. The theory of these antennas from the electrodynamic point of view is very difficult. At the moment, the parameters of such devices are selected empirically with the help of software systems electrodynamic simulation such as CST Microwave Studio... And here's one of my older projects.... By pasting a line of triangular adaptation can adjust impedance across the frequency range.
  20. The BDM-2 is a wave channel with crack initiation, and delay line is made of sequentially installed disk elements. Compared to classic antenna BDM new directed antenna BDM-2 is: More gain; Improved radiation pattern; More stable operating parameters; Greater reliability; Superior mechanical characteristics.
  21. Anyway, I like pyramidal horns, better, because they are easier to build....!!! ,,,and some constructive details... ,,, if the dimensions of the pyramidal cone are reduced by half(240/2x175/2x290/2), these results are obtained...
  22. ,,,okay,thank you...!!! ,,,but you see, I addressed this topic a few years ago...!!!
  23. ,,,yes...!!!