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vars-cat
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Everything posted by vars-cat
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How can I divide Batwing into 4 parts in CST Studio?
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,,,..!!Judging by the screenshot, you just increased the sides,,,...!! I wonder what will happen if you connect two pairs of ellipses in the reflector with such sides? 17+ dBi?
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...Try using the 75 Ohm F-connector,,,
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Jomy, can you simulate this antenna with vertical sides and a 2 mm thick polyethylene cover? https://ypylypenko.livejournal.com/77745.html
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*facepalm* Some antenna design experts and the spectrum analyzer will not agree with you. There is nothing more to discuss here.
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aurel, I am really dissapointed in your explanation, active plate DO NOT MUST BE ISOLATED from metal rod. Here is a simulation of an antenna without isolating the active disk: 1800 MHz - https://ypylypenko.livejournal.com/57630.html 2100 MHz - https://ypylypenko.livejournal.com/73658.html 2400 MHz - https://ypylypenko.livejournal.com/75267.html 2600 MHz - https://ypylypenko.livejournal.com/57985.html All antennas work well without isolating the active disk. I wanted to say that on the street you can not use copper without protection.
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Galvanized steel 0.5 mm The сentral copper core of the coaxial cable must be protected from moisture. You can use nail polish. I hope I translated the question correctly. Wet copper will work, but over time it will begin to oxidize (deteriorate), and this may negatively affect its performance.
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[offtop] Multiple beer cans + electrode + super glue = 3G antenna [/offtop]
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The tube is needed for reliability. You don't need to isolate anything anywhere. The cable braid must be in contact with the largest disk. Also: Instead of the RG-58 cable (high signal loss), it is better to use rg-6. The antenna made of copper cannot be used on the street.
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Better try to do like this: Лучше try to do вот так:
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I thought the bolt caps near the wire might have a negative effect. Now I need to get a drawing of the fastener somewhere.
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Where can I install four M6 bolts for mounting the antenna so that the bolt caps do not affect its operation? As here.
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,,,,,You're right. >>>>>You're wrong. !!!!!...They are very similar. You only need to increase the pin...!!!!!
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Ok. Make it using the 75 Ohm connector I gave you today.
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Not better. This antenna is much more complicated than batwing, and it's not as broadband. I need 470-820 MHz (to be more precise, then 500-800 MHz).
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Can you make this version using M6 metal studs?
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,,,,,Your Internet connection has a very high ping...!!!! The "classic" version is easier to manufacture. Also I thought that it is possible to reduce the size of the reflector a little (so that the gain at low frequencies does not fall below 9 dBi). I also wanted the "butterfly" to be attached to the reflector on metal (and not dielectric as in the model) rods.
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Unfortunately this is true. Didn’t even give a connector model.. Here you go (big thanks to Sergey Sychugov). F-female.aedt
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I asked, but he wouldn't help. This must be a very difficult task.
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,,, I wrote to Yurik82 to give measurements (he took measurements). Waiting for his answer...!!! Yes, 75 Ohm...
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Can you replace the SMA connector with an F? sgser (Antex engineer) and yurik82 say that such a connector can be used, but it must be considered in the model. https://ypylypenko.livejournal.com/76027.html
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Because you posted a new drawing 11 hours ago And what about this?
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.....!!!,,,,,,,,Still pretty busy?,,,,,,,,,,!!!.....
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Ok. Just wanted to make sure you didn't forget