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.

Admin

Administrators
  • Content count

    4943
  • Joined

  • Last visited

Everything posted by Admin

  1. ,,,thanks...!!! ,,, soon I will give the dimensions ... !!!
  2. I managed to optimize the Batwing antenna by using an elliptical curve, which led to a uniformity of broadband...
  3. 2x2 MIMO directional antenna for the LTE1800 (B3) band. F=1700-1880 MHz. CU=15dBi. F-female connectors (75 ohms). It is recommended for use at a distance of up to 10 km from the operator's BS. Electrical characteristics Operating frequency range, MHz 1710-1880 Gain, dBi 15 Bottom width in the N/E plane, deg 35-37/33-35 Forward / backward ratio, dB at least 12 Decoupling between antenna inputs, dB>27 Input impedance, Ohms 75 SWR in the operating frequency range, max. 1,7 Permissible power, W 10 Polarisation vertical+horizontal Mechanical characteristics Weight with mounting, g 720 Mast diameter, mm 30÷52 Overall dimensions, m 0.630x0. 12x0. 12 Permissible wind speed, m / sec 35 Connector 2 x F-female Number of elements 13 Mounting and antenna material galvanized steel Protective coating powdered polymer paint Material of the protective box ABS
  4. 20x31,8 mm:5 mm,,,,it is clearly seen in the drawing above...!!!!
  5. ,,, so be it ... ??!!
  6. ,,, Harry36,dimensions or CST simulation...!!!
  7. ,,, such as dual band,,,??, maybe, cross polarization...!!!
  8. ,,, that's what it would look like ... !!! ,,,by o_pylypenko...!!!
  9. https://www.wikihow.com/Check-Internet-Speed
  10. This is an article edited by the user "com666", for which, I would like to thank them....!!! The range of mobile communications covers a wide frequency band. The bands LTE800, LTE900, LTE1800, LTE2600 are already used to transmit LTE signals in Russia. 3G signals are transmitted in the ranges wcdma900, wcdma2100. To receive mobile signals in these ranges you need broadband antennas. Among industrial designs, it is difficult to find simple and repetitive designs. Most often, antenna manufacturers use separate antennas for the low-frequency and high-frequency parts of the range to cover the entire range and combine them with a frequency-dependent combiner. This approach has many disadvantages, such as: The design of the antenna is much more complicated. The hardest thing to do is a filter adder. The area occupied by the antenna is increasing. Losses from summing ranges are growing. Examples of such antennas in the photo below. SHYAM Antenna for 900 + 1800 Dual Band Repeater: However, full coverage of all ranges of mobile communications is not provided. There is a need for a simple broadband design with the overlap of the entire range of mobile communications 800-1700 MHz. Here is an example of such an antenna: The antenna is a modernized broadband Batwing, 1945 patent. "Batwing Super-Turnstile Antenna US Patent Number: 2480153 Year: 1945 Inventor: Robert W. Masters Original Document: US Patent Number 2480153 " There is a mention of this antenna at Rothamel in the book "Antennas" The antenna sheet can be cut from a flat galvanized sheet, 0.7 mm in one pass with a laser cutter. Additionally, you need to solder or rivet the cables from the same material with a size of 34x14mm. The antenna uses two flat square screens: Lower 220x220, above 95x95. Specifications:
  11. I checked a V-shaped vibrator and it seems to give good results, the MIMO version remains to be tried...!!! This ensures uniformity of impedance over a large frequency band.
  12. CST STUDIO SUITE 2022.04 SP4x64....https://downloadly.ir/software/engineering-specialized/cst-studio-suite/ https://p30download.ir/fa/entry/95598/
  13. 2.4g 5.8g daul band wifi whip mmcx antenna Frequency range 2400-2500Mhz/5150-5850Mhz Gain 7dBi VSWR ≤1.5 Polarization Vertical Input impedance 50Ω Power 30w Size 49*14*1.8mm Cable length 130mm or customized length Cable type RG178 whip antenna Connector MMCX Mounting 3M sticker Operation Temperature - 40 °C ~ + 80 °C Storage Temperature - 40 °C ~ + 80 °C Application Wifi 2.4g antenna 5.8g antenna MMCX or Ipex connector or stripped cable optional
  14. ,,, you can bend the galvanized sheet like this ... ,,,or like this...
  15. ,,, it is possible, but you do not get the same gain...!!!!
  16. ,,, is a copy of Petra20...
  17. ,,,another bend shape...https://www.youtube.com/watch?v=6DqHlFrHhg0
  18. ,,,the best Batwing....If you round the corners you will get a better antenna...!!!
  19. The high gain directional wideband antenna is suitable for directional radio signal transmission and reception, signal source reconnaissance and direction finding, broadband signal testing and the like. The antenna is suitable for UWB positioning module, Wifi2.4G and 5.8GHz and other common frequencies. Antenna indicators: Frequency range: 2.4GHZz-10.5GHz Dimensions: 100mm*85mm Polarization mode: linear polarization Rated gain: 7dBi Return loss: 10dB Power capacity: 8W Interface form: SMA female head (outer screw inner hole) Package included: 1 x 2.4-10.5GHz UWB Directional High Gain Wideband TEM Antenna
  20. Jossip,if I understand you want something like that....
  21. https://www.everythingrf.com/rf-calculators/fresnel-zone-calculator