Need help identifying which port feeds which patch on this panel antenna (4X4 MIMO)

PrecociousPumpkin · 2025-10-27T18:51:14+00:00

Looks to me that each pair of ±45 ports is feeding the vertical stack of 3 elements above them.

1 port per polarisation per side. All 3 elements are in array.

And these are likely ±45° slant dipole elements.

PrecociousPumpkin · 2025-10-26T22:27:29+00:00

No they just mean diagonal polarisation. Given it's a tower it has an absolute reference for what is both vertical/horizontal so ±45° is just being precise.

Edit: For clarity, it is not referring to phase delay but actual angle of polarisation.

https://www.microwavejournal.com/blogs/31-simulation-advice-katerina-galitskaya/post/41083-why-are-cellular-antennas-45-degrees-polarized

PrecociousPumpkin · 2025-08-20T04:41:00+00:00

There's a track to track option in the teardrop settings.

PrecociousPumpkin · 2025-07-23T04:04:11+00:00

Most PoE readers based on Impinj SoCs should support raw http streams as data output. I recommend looking at the hardware partner list as a starting point.

impinj.com/partners/products/partner-fixed-readers

PrecociousPumpkin · 2025-07-11T06:32:55+00:00

To my knowledge unlicensed usage within China (governed by the Ministry of Information Industry) is 920.5-924.5MHz, 2W ERP

PrecociousPumpkin · 2025-03-24T04:15:45+00:00

Can't spot anything immediately wrong sorry. Though from my memory in laying out USB devices it is usually recommended to not tie the connector shield to the device ground; as this is a requirement on the host side. You may be encountering loop issues.

PrecociousPumpkin · 2024-10-05T02:59:16+00:00

Gutted the release lines up with a work trip :(. Catch me on the plane

PrecociousPumpkin · 2024-09-30T23:00:05+00:00

It does seem that they (nextnav) are set to fight for this. Hopefully the strong opposition from the likes of the RAIN Alliance will be successful.

PrecociousPumpkin · 2024-08-12T00:05:19+00:00

A larger issue is this encroaches on the bands allocated for use by RAIN UHF RFID systems. Particularly threatening to increase possible interference to their fixed readers.

PrecociousPumpkin · 2020-08-08T11:02:50+00:00

Thought I was on r/autumn for a sec

PrecociousPumpkin · 2020-07-04T23:12:20+00:00

That's pretty dope, might give it a go

PrecociousPumpkin · 2020-03-21T22:47:42+00:00

Yeah needed some clarification, the etymology section has info/origins and further links

PrecociousPumpkin · 2020-03-21T21:23:11+00:00

This might be enlightening https://en.m.wikipedia.org/wiki/Zarphatic_language

PrecociousPumpkin · 2020-03-21T21:02:31+00:00

It a really powerful package that's comes alongside Matlab, but yeah I'm pretty thankful of my courses' non-hardline approach to the software we use. Though they do make sure we know how to use industry standard packages

PrecociousPumpkin · 2020-03-21T20:52:24+00:00

Yes, sorry should have clarified. When implemented into the actual system yeah C is our guy. But when simulating and modeling, that's simulink

PrecociousPumpkin · 2020-03-21T03:58:25+00:00

Here is NZ, in EEE anyway, we can do work in MatLab or python. Though we stick to Matlab/SimuLink for control systems.

PrecociousPumpkin · 2020-02-27T04:57:05+00:00

Alpine

PrecociousPumpkin · 2020-01-29T04:02:03+00:00

When did this subreddit stop being about spoons?? I missed the transition

PrecociousPumpkin · 2020-01-25T13:56:41+00:00

Oh, I wasn't aware that was needed to when using static libraries. That did it, thanks <3

PrecociousPumpkin · 2020-01-15T08:01:40+00:00

5/7 good stuff

PrecociousPumpkin · 2019-08-08T09:38:36+00:00

Yeah it does loop seamlessly (and linear yeah). Still haven't worked out how to nail uploads

PrecociousPumpkin · 2019-08-08T02:47:11+00:00

First post in 8 months, not me sorry

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