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Lots of interesting info in here! I have a DSL modem that smells like burning plastic at all times, so I put it outside in a metal box. I had wondered about th
by code_duck 9y ago
Lots of interesting info in here! I have a DSL modem that smells like burning plastic at all times, so I put it outside in a metal box. I had wondered about the extent to which it diminishes the signal in the house. This passage helpfully explains:
"[...] any opening, or slot, on the shield reduces its effectiveness. The slot behaves as antenna, with the same radiation pattern as a wire of the same length."
- IndrekR 9y agoMore like wire of the half length (monopole) with good reference. Slot is pretty much equal to a dipole and resonates best at double the wavelenth of its longest axis. This assumes single narrow and straight slots. Quite fancy radiation patterns, polarization and resonance points can be implemented with fractal shapes of slots.