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A microwave turnstile junction is a waveguide for use at microwave frequencies that is used as a splitter to derive outputs with different symmetries. There is a pretty good drawing that can be viewed by using the link. Be sure to scroll down. The picture is on page 7 of the article. Consider the four rectangular ports are the "goes outas" and that should help lock it in. Precision in construction would be a must to get an even split, but that makes sense. Those microwaves are tricky. More ports are possible (a bigger turnstile) and a round input waveguide will help solve problems. The geometry (shape) of a microwave turnstile junction sets up a scattering matrix at the junction with a resulting differential symmetry (call it polarity) in the outputs. Keep it simple and it'll be easier to see how it works.

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17y ago

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