A while back I presented the question "what if the coil loops were put in parallel instead of series?". One of the subquestions that's been chewing at me is just how one would go about accomplishing that. I drew up a possible way to accomplish this on a PCB layout (see attached jpeg).
The trace widths and start/stop points for each loop were strictly arbitrary for the sake of example. Working trace widths would have to be determined, I drew each loop at 360 deg but 180 or 90 could just as easily be generated, and I used an inner dia 1/2 the OD because I'm still stuck on the idea of concentric coils. The area could be divided with xmt coil on outer third, rcv on middle third and hole for inner third.
The idea behind this layout is to mechanically shorten the actual distance the xmt signal has to travel, to hopefully shorten the xmt pulse decay.
In this case it travels at most two turns, instead of twenty.
I don't know if this would be effective or not, but it's been bugging me, so I thought I'd present the idea to the forum and see what you guys think...
gm
The trace widths and start/stop points for each loop were strictly arbitrary for the sake of example. Working trace widths would have to be determined, I drew each loop at 360 deg but 180 or 90 could just as easily be generated, and I used an inner dia 1/2 the OD because I'm still stuck on the idea of concentric coils. The area could be divided with xmt coil on outer third, rcv on middle third and hole for inner third.
The idea behind this layout is to mechanically shorten the actual distance the xmt signal has to travel, to hopefully shorten the xmt pulse decay.
In this case it travels at most two turns, instead of twenty.
I don't know if this would be effective or not, but it's been bugging me, so I thought I'd present the idea to the forum and see what you guys think...
gm
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