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Lumped port problem (Element 1 should be placed between two conductive boundaries)
Posted Sep 11, 2025, 9:53 a.m. EDT Electromagnetics, Geometry, Physics Interfaces Version 6.3 3 Replies
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When I placed the lumped port in the CPW design the error showed - "Subfeature Uniform Element 1 should be placed between two conductive boundaries. - Feature: Uniform Element 1 (ue1) " - I placed the lamped port in between the perfect electric conductor boundary, still this error message came and stopped the process. Can anyone check the file attached and give me the advise to correct this? I already go through the examples COMSOL provide, but can not understand the problem. Also the ground and ports are not connected to each other (separated by a air gap).
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You appear to have placed conducting boundaries around ALL the edges of your lumped ports. That is not the right way. You are shorting out the ports -- look at your settings under Perfect Electric Conductor 1 and Perfect Electric Conductor 2. The electric field in each rectangular port should travel perpendicularly from one conducting edge of a port to the opposite, parallel edge of the port. It should not travel along a conducting edge, since that would short out the port.
-------------------Scientific Applications & Research Associates (SARA) Inc.
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thank you for such fast response, I will correct this
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Hi, I want to run the simulation of CPW resonator with capacitively coupled with lamped port . But there I can not generate the S21 plot, can anyone help...
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