We are trying find solution how to make waveguide with minimum set of points and should be ready till Monday.
Fabulous - can’t wait to see how it turns out!
Of course "the pure" OS could still be made. With a large roundover at the mouth (here also via a clothoid) the axial ripple is not there anymore. Tested with ABEC. It only gets big quite quickly.
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InOtIn,
here are the basic STLs that would fit into Jacek's machine, you can look.
(online STL viewer: Free online STL viewer)
here are the basic STLs that would fit into Jacek's machine, you can look.
(online STL viewer: Free online STL viewer)
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Of course "the pure" OS could still be made. With a large roundover at the mouth (here also via a clothoid) the axial ripple is not there anymore. Tested with ABEC. It only gets big quite quickly.
Finally a real waveguide. I would expect it's performance to be exemplary.
Hi Earl,Finally a real waveguide. I would expect it's performance to be exemplary.
I would expect both of them to perform very well.
Maybe some slight disruption of the output symmetry may be even better, I don't know (superellipse instead of a circle) -
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Hi Earl,
I would expect both of them to perform very well.
Maybe some slight disruption of the output symmetry may be even better, I don't know (superellipse instead of a circle) -
My experience is that more symmetry is better. The best waveguide that I have ever measured is purely axisymmetric.
Smaller waveguides have issues related to their size and sometimes non-symmetry can help, but in a bigger waveguide this is never going to be the case. Bigger is always best.
I have to admit that based on the simulations I have made so far it seems you are completely right. The size is really the key and when made big enough, the OS waveguide may be hard to beat. You have been saying this all the time and now I really know what you meant. With smaller ones, it is possible to do better. That is what we are trying here.My experience is that more symmetry is better. The best waveguide that I have ever measured is purely axisymmetric.
Smaller waveguides have issues related to their size and sometimes non-symmetry can help, but in a bigger waveguide this is never going to be the case. Bigger is always best.
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I have to admit that based on the simulations I have made so far it seems you are completely right.
I'm glad that we can agree.
I started out doing more optimal designs and kept try to push that smaller, but I always found that smaler was always seriously compromised. There is an optimum for any size however, but I never found that non-symmetric gave me any advantages.
For example, this slightly non-axisymmetric horn has dimensions of 14.7" x 13.8" (DE250). I made OS waveguides of this size before and none of them behaved so well. It may be that I gave up too early - the termination is really critical which I have realized only recently. Do you think you could design OS WG of this size to perform better?
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