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Admin

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Everything posted by Admin

  1. ,,, a final version where I adjusted the dimensions...
  2. ,,,okay,I will try...!!!
  3. ,,,,at Vasuki's request, I optimized this antenna for the 2.31 GHz frequency...
  4. ,,,hi buddy...!!! ,,, and yet, what dimensions are missing ...?
  5. ,,, yes, I came back with a simulation of these omni antennas... ,,,,but it still looks like it can't reach 6 dBi gain in directivity...!!! ,,,and these are the dimensions used...
  6. wait ,,,!!! I'll do a simulation with the Bester antenna...!!
  7. yagi

    ,,, for you simpler ...
  8. yagi

    http://give-all.biz/articles/samdel/samodelnaya-antenna-analog-obluchatelya-bester It could be even better..!!!
  9. yagi

    ,,,congratulations...!!! ,,, and how does it work .. ???
  10. ,,, another solution...
  11. To produce circularly polarized (CP) radiation, a small, simple-sided PCB, crossed dipole-patch antenna with one metal strips loaded for phase delay is proposed
  12. ,,, with small dimensional differences such an antenna can be executed...
  13. ,,, and yet no, this omni antenna is not well sized... ,,, it is for 2.63 Ghz and this is the reality after resizing...
  14. ,,, construction of a simple collinear antenna...
  15. yagi

    Vasuki,I gave you a solution above, if you want to consider it, well, if not, I think it is unuseless to continue the discussion...!!!
  16. yagi

    ,,,you can try this...
  17. ,,,here on this forum , is such a thing ,,,, search and you will find .... !!!
  18. ,,, I think a new post should be opened with this topic (offset dish antenna)...!!! ,,, I will open a new post and you will complete it ,,, the above mentioned will be deleted...!!!
  19. Offset satellite antenna is a section of a paraboloidal reflector with oval form. The antenna surface is not round anymore, but oval (ellipse) and symmetric. The focal point is not mounted in the middle of the dish, but to the side of the dish (offset). Thus, the advantage of this technology, is that the antenna surface is not being shadowed by the feed anymore (from the satellite's point of view). Another advantage is the less likelihood that snow will build up on the dish. The offset satellite antenna does not "look" straight up to the satellite as a Prime Focus antenna does, but it's inclined about 25° downward (almost upright position). Nevertheless, an offset dish appears for the satellite to be circular having the horizontal diameter.
  20. I considered that it is still necessary to ensure a uniform impedance over a fairly large frequency range, which is why I came to this configuration of the antenna....!!
  21. ,,, if you don't have obstacles in the direction of Base Station, it might work(but I don't think so)..!!!
  22. ,,, for a distance of 10 km, you need a parabolic offset dish...
  23. ,,,hi buddy...!!! ,,, yes it is possible, but tell me , Bester antenna with how many elements .. ???