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Problem to justify the correct signal for microwave to propagate from air to water

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As attached is what i faced during my simulation. What i want to do is to determine suitable microwave frequency when passing through air then water or other medium. How can i justify which is the correct answer? I am not sure whether i am doing it correctly since this is the first time i am using Comsol. Can anyone guide me, please? As least some instruction guide, please? Thanks.

I am using Comsol 4.2a


0 Replies Last Post Apr 2, 2015, 6:33 p.m. EDT
COMSOL Moderator

Hello Thomas Kiat

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