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For the paper named "Antenna Miniaturization and Bandwidth Enhancement Using a Reactive Impedance Substrate" the statement "PEC-backed dielectric material", so what is the meaning of this statement? Is it a normal substrate?

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Based on the abstract, the authors seem to use the acronyms PEC and PMC to mean "perfect electric conductor" and "perfect magnetic conductor", respectively.

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  • \$\begingroup\$ Yes I nderstand the two terms , but I cann't understand the meaning of the "backed" dielectric substrate \$\endgroup\$
    – John adams
    Jun 2, 2019 at 21:03
  • \$\begingroup\$ The dielectric substrate has a PEC layer on one side (probably copper or silver) and the periodic square patches on the other side. \$\endgroup\$
    – Dave Tweed
    Jun 2, 2019 at 21:38

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