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clanon
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If noise is fix you increase SIGNAL = GAIN ...(adding directivity will also lower Noise from out of the main lobe signals) a bigger reflector might be enough
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5G not available or not registered...so it might be just on 4G...(which has a practical limit close to 100MBPS)
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you COULD try with triangular elements they build it like that (two flat stamped sheets) for easy manufacture and cheap...
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https://www.youtube.com/watch?v=jv6sk93HDjo
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Spillage , Efficiency , Blockage and Lobe Shape are the main factors
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Copy ANY photo link and paste https://imgur.com/a/orXbKFI OR upload to imgur copy link paste link on YOUR site
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Picture uploading is not working -200 error https://imgur.com/a/ekHmGFR
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it will interesting to test losses on N type to sma (Most VNA use N type outside and SMA inside)
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only if the phone has a wifi connector (micro SMA IPEX ) BUT having the 722 in the antenna is the FIX and a LAN cable to usb (SOME GUYS got 12 meters ) from the usb on the 722...THAT's HOW I would do it (have done)
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What's the plan...mimo Circular polarization...V and H pol...?
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didn't like the results for one Bow tie...the other design with closed box must be better (harder to draw and build) Here's the PAPER with dimensions 09100804.pdf
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I guess the proximity fed probe (L Probe) helps to widen the bandwidth (since there's more modes and room for the energy to couple than STRAIGHT CONTACT , which would have only ONE mode)
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to get closer to 15dbi takes at LEAST 10 directors...(even more) it should give 12db or less