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Recent content by hca41316

  1. H

    FR4 dielectric constant

    pcb fr4 capacitance Take care! Er of FR4 is a function of temperature !
  2. H

    Where to find dialectric substrate with EPsr=40 or EPsr=50?

    I think you mean: Bandwith~(1/Radiation Q)~1/(epsr/h)
  3. H

    Need help with structure in CST Microwave studio

    I think the problem is the thickness of the metal... You can speed up your simulation if you starts from f=0GHz, you need only the half time (fourier!) Hmm, isn't there a magnetic wall in zx-plane? With wall, simulation works! hc
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