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vars-cat
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Everything posted by vars-cat
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Too difficult task?
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Galvanized sheet, thickness = 0.5 mm.
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1920-2170 MHz.
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It's not urgent. Check if you have time. Why two ports? There is no MIMO support on 3g networks.
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https://ypylypenko.livejournal.com/73658.html Jomy, can you modify this antenna for circular polarization? In my country, mobile operators use this type of polarization in 3g networks.
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Thanks, but I need batwing for TV. You promised.
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Not like this: https://4pda.ru/forum/index.php?showtopic=460625&view=findpost&p=89754020
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350 MHz is not a problem for batwing. https://ypylypenko.livejournal.com/77053.html I wish that the antenna had a simple form. Something like this:
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Admin, do you can optimize it for 470-820 MHz?
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There are not all sizes. Have you tried to optimize it?
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I am looking for a MIMO irradiator for 4g b3 (1710-1880). I found this option, but Yurik says that this antenna has poor port isolation. Can you check it out?
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I can not find. Link please.
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http://www.lan23.ru/forum/showthread.php?t=12338&p=138269&viewfull=1#post138269 Did you model it? Is this a really good 75 ohm antenna?
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What is the polarization of this antenna? Linear? Where are the other graphs (vswr, gain)?
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1800-2100 MHz? What does it mean? Dual band (4g + 3g)? LOL! This is not an antenna, it is piece of... metal. Made very poor quality. If you use direct cable entry without a connector (or a connector with a solder connection as in the photo), then a spacer is not needed.
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What does it isolate? I see the free space between the active disk and the reflector. Give a link to the video.
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Maybe it's better with this connector?
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Yes. 2412-2472 MHz.
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Can you make a 75 Ohm version of this antenna? Or this: https://ypylypenko.livejournal.com/75267.html (yurik82 couldn't do at 75 Ohm, as "the displacement of the pin increases strongly negative reactivity (i.e. shifting the resonance), most likely it is necessary to recalculate the sizes of the active and associated with the first disk").