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Admin

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Everything posted by Admin

  1. ,,,this it"s cone antenna not biconical,,,,!!!
  2. I will try this variant too.
  3. ,,,so it seems...!!! ,,,in any case I do not think it can be 9 dBi ,,,what do you say??
  4. This is approaching to the truth...
  5. Another type of panel antenna
  6. ,,,for all CST-software users,take this subproject of SMA waveguide port sma.cst Once you've done a new project, import this subproject with SMA and translate it to where it is the feed point of antenna
  7. why not read carefully the previous simulation topics,,,???
  8. "Yes, it seems that it is necessary to adapt the impedance of the connector with the coaxial cable at 50 Ohm
  9. Yes ,this practical biconical dipole antenna can be used as a reference for testing across the 4.8-to-5.8-GHz band I will try to make a simulation for 2.4 GHz FOR YOU,,,!!!
  10. yes, probably he does not care,,,!!! and he does not even have VSWR-meter,,,!!!
  11. I do not know, it might, I should do a simulation ... !!!
  12. ,,,not always and especially that it has directors and reflectors in X,,,,!!!!
  13. did not you have anything wrong?
  14. Okay, but this is another type of Yagi-Antenna
  15. Look carefully at the image above,,,....!!!!
  16. you want to say of this ... ??
  17. ,,,I do not think so, this is QFH(Quadrifilar Helix Antenna)
  18. "Yes, it seems that this impedance adaptation with suspended adaptive lines can provide a higher frequency band
  19. Novicom antenna on PCB ,,,from video,,, Anteks antenna on the air
  20. Model Petra antenna for 5,8GHz on FR4 #1mm Overall dimensions 10x48x66mm
  21. n00b, I do not want to make an insult, but this antenna don"t works,the performance is almost same as ordinary biquad which around 11-12 dBi, tested from 2-9 elements, any element added has little effect to signal gain. In addition the frequency band is quite narrow,I think that Andrew McNeil, do not test with a software before publish this design.
  22. VAS 5.8 Ghz Air Screw Antenna (RHCP) by Video Aerial Systems
  23. Antenna circular polarized (clover) Today I'll show you how to make yourself famous "clover" from IBCrazy. What is it: a need for stable and long-range FPV video link. If you omit the technical details, it turns out that for the same power in antenna, circular polarization easily interrupts the linear range and stability. it purple the position of the transmitting antenna in space. In contrast to the linear (normal whip antenna). There is rotate one of the antennas 90 degrees and oppa. Polarization from vertical became horizontal. Ie necessary and the other antenna to rotate as well. If you do not turn, it is a minus signal. For 2.4 GHz, the sizes to get the antenna oriented in 2440MHz with bandwidth more than sufficient to cover all channels of this group, from 2370 to 2510MHz should be the following: The length of the Central wire = 3mm Length of wire = 122,8mm Long side (the length of the straight segment + length of the Central conductor) = 35,2mm Short side (the length of the straight segment) = 32,2mm The arc angle = 90 ° Tilt angle = 50 ° For the range 1.3GHz, with a center frequency of 1280MHz, the dimensions must be as follows: The length of the Central wire = 3mm Length of wire = 236,8mm Long side (the length of the straight segment + length of the Central conductor) = 67,2mm Short side (the length of the straight segment) = 64,2mm The arc angle = 90 ° Tilt angle = 50 ° Dimensions for the frequency 5740MHZ, one of the channels points Fat 'shark: The length of the Central wire = 2mm Length of wire = 50,9mm Long side (the length of the straight wire + the length of the Central wire) = 14,8mm Short side (the length of the straight wire) = 12,8mm The arc angle = 90 ° Tilt angle = 50 ° This appearance of the antennas at 1.3 GHz (left) and 2.4 GHz (right), in order to give you an idea of sizes: Constructive Details