Seeing the booster thread, I got an idea
So I have some 0.03 inch hardline (very thin shit) and a cell phone that I have been thinking about augmenting so it has a SMA connector on it, so I can carefully analyze output performance and possibly add , filters, protection, external output data tap, directional antenna, etc to it (obviously not illegal amplifiers
)
I don't know much about how the output amplifier of cell phones is designed, but can I simply find the last point in the PCB before the cellphones antenna and solder in the hardline using minimal exposure of the center conductor of the coax? Do I need an impedance matching circuit? Cutting the trace right after the output
I kind of don't even know where the antenna is. Is it one antenna?
Here is a picture I found
https://d3nevzfk7ii3be.cloudfront.net/igi/kKUarywLm6AbxEkF.hugeThe phone in question is a LG G4.
My plan was to just use a nearfield probe to see where the signal is the greatest but I figure I would ask before I potentially destroy alot of money.
Also, if I modded the chassis, would putting an RF relay or switch be feasible?
I thought maybe this is difficult if they use some kind of highly integrated rf SOC where you can't intercept the analog data before an amplifier.
I think it has something to do with that via stiched trace on the bottom of the picture, it looks like the most RF thing there.
And I know the probability of success is low, but something interesting and complicated like a cell phone would help me learn this stuff better because its interesting, and maybe make me feel better about spending money on the PLUTOSDR, I get irritated when I cannot at least get some fun out of my machines.