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Definition of “attenuation” in Q2D Extractor

    • CCC
      Subscriber

      Does anyone know the definition of the Attenuation under "Create Matrix Report". Specifically, in my transmission model, there are three signal conductors. What does the mode mean in the AttenModal(Mode1), AttenModal(Mode2), AttenModal(Mode3)

    • Aymen
      Ansys Employee

      The attenuation is described in the 2D Extractor help:


      https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/Electronics/v232/en/home.htm%23../Subsystems/Q3DExtractor/Content/Q3D/ModalAnalysisofLossyTransmissionLines.htm?TocPath=Q3D%2520Extractor%257CQ3D%2520Extractor%2520Help%257C2D%2520Extractor%2520Technical%2520Notes%257CTransmission%2520Line%2520Circuit%2520Models%257CDistributed%2520Models%2520for%2520Transmission%2520Lines%257CLossy%2520Transmission%2520Lines%257C_____1

      The propagation constants γn are complex numbers with real part αn and imaginary part βn.

      It can be seen that αn represents the attenuation per unit length that the mode experiences as it moves down the transmission line. The imaginary part βn represents the change in phase per unit length.

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