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  4. Can this antenna work into a dish?
  5. Thanks for this. I'm looking forward to those dimensions, and t'm also interested he effect of adding some extra directors.
  6. Planar microstrip antenna arrays have conformal nature andgood directivity. However, they have low efficiency because or feed network losses and higher cross-polar radiation from the feed network. Reflector antennas provide high gain but their curved reflecting surfaces and large weight are disadvantages.To mitigate the above problems, space-fed microstrip antenna arrays have been proposed.
  7. It's for unbalanced LINES (COAX) NO need to use a balun... (PS: Since the antenna GEOMETRY is electrically "BALANCED")
  8. https://www.hindawi.com/journals/ijap/2015/164392/
  9. ,,,a Batwing in a bucket(D=290mm;d=154mm;h=200mm)...!!!
  10. looks like perfect antenna for travelers - 12dbi, super-tiny, can be used for wifi and LTE bravo!
  11. short pin here = piece of conductor(short-circuit conductor)
  12. Hi, can someone explain me what Is the "short-pin" on this antenna?
  13. Last week
  14. and it "gives" Covid 19...a think...
  15. the main problems with 60ghz is you can not use usual connectors... i would use something like tiny cantenna as feed for dish
  16. ,, and here is a simulation of the antenna with mine dimensions(I'll post them later)....!!!
  17. S11 is the measurement of the antenna (or any electromagnetic black box) of ABSORPTION and RADIATION (efficiency) It shows how "deep" RESONANCE is at a given Frequency and hence BANDWIDTH (Q factor) PS: first 1 is the energy out and the second 1 is the ENERGY in OUTput / INput = Efficiency It should be equal or bigger than -20 db
  18. Solwise Outdoor directional panel antenna 10dBi gain Flush wall mount N type socket connector 2.4GHz
  19. Can you show the gain plot for this antenna and help me with the meaning of S1, s1. Are they the same or different meanings? Thanks!
  20. "Unfortunately, the use of low-cost FR4 as the substrate introduces some additional complexity on the antenna design. This is due to the inaccuracy of the FR4 relative permittivity and its high loss tangent (around 0.02). Variations in the FR4 electrical permittivity can shift the operating frequency and the high loss tangent dramatically affects the antenna axial ratio and gain, resulting in poor radiation efficiency." Design of Low-Cost Probe-Fed Microstrip Antennas | InTechOpen, Published on: 2011-04-04. Authors: D. C. Nascimento and J. C. da S. Lacava.
  21. this guy gives WORSE numbers...
  22. @5 ghz...anyway...it should be lower losses at 2,4ghz (couldn't find it...)
  23. Neltec about 90% attainable...(-0.9151db) apparently
  24. Petra-9 turns into Petra-20 For the manufacture of a strong UMTS 2100 antenna, which it needed in a repeater gain circuit, must be used a small Antrax Petra-9 panel antenna. Petra-9 is used as a service (internal) antenna, but with a little refinement it can become an irradiator for an offset mirror.
  25. Not on DIELECTRIC...only on air ...i don't know about teflon...but for FR4 is 60 70 % efficiency...(-4.437 to -3.098)
  26. ,,,for tuning the 50 Ohm impedance,Total Efficiency must to be << -0,06 dB...!!!
  27. Downscaled to 2.4ghz Dimensions guessed... 1mm teflon sustrate seems to work...need more refinements...to get higher efficciency and lower VSWR...and z closer to 50 ohms...(maybe...) It should get closer or more than 20.5 dbi...(@ 3.5 ghz...)
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