# Non reflecting boundaries in waveguides

Can someone please explain the Sommerfeld radiation condition and what is the alternative non-reflecting boundary conditions for waveguides of general geometries?

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At first blush the article you've linked looks pretty clear. Is there something in particular that you don't feel you understand? –  dmckee Dec 14 '12 at 16:14
Thanks for the reply. I think I'm clear now. –  vijay Dec 17 '12 at 5:28