在CST MWS中對一個結(jié)構(gòu)進(jìn)行分析時，會提示網(wǎng)格錯誤，該怎么解決

錯誤信息：Waveguide for port number 1 is too short. The Waveguide must be homogeneous for at least three mesh planes along propagation direction.

太短了加長點(diǎn)

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