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I want to simulate a quarter wave bifilar transmission line transformer in HFSS, but when i simulate i get different results depending on the airbox.Can anyone help me?
i assume that you are simulating for s-parameters of the transmission line.i would recommend that you incorporate a waveport rather than a lump port and do analysis.which saves you time and energy because airbox is supposed to be a radiation boundary in most cases.and the position of the airbox matters a alot when you do an analysis of the parameters.because if the airbox is not placed in the far field region,results vary significantly over small distances.hope that helps.let me know if i can be of any further help
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