On Mon, Mar 16, 2020 at 02:51 PM, Lee wrote:
... but when I use polarized
sun glasses I can turn the nanoVNA 90 degrees from normal and get improved
contrast.
On a NanoVNA-H, a linear polarizer, like most polarized sunglasses, has relatively little affect on intensity, regardless of the orientation. But in conjunction with pair of "3D" glasses, crossed with the sunglasses, one can get complete extinction as the display is rotated, and increased transmittance relative to the sunglasses, with optimum orientation.
Awkward position for the polarizers, though, so leave it to a mechanical wizard to devise a contraption. Complete the fashion ensemble with an aluminum hat!
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I_B_Nbridgema
Nbridgema