03-23-2015, 05:24 PM
A shielded loop can be insensitive to electrostatic fields (local RFI), but an unshielded one acts like a short vertical antenna.
The other useful property of a loop is nulling a signal broadside to it (the signal generates equal voltages in the two vertical sides of the loop, which cancel out). Balancing the feed well enough to achieve this is tricky however.
The other useful property of a loop is nulling a signal broadside to it (the signal generates equal voltages in the two vertical sides of the loop, which cancel out). Balancing the feed well enough to achieve this is tricky however.
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