Question

If substrate of both antenna are of same heivht what wil be difference for coupled patch antenna

Answer 1

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Here is your answer

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when using probe coupling in DRA, will there be any effect of substrate ... permittivity of the substrate used for the patch antenna design, the size of the antenna reduces ... this the same case when we are using non-planar antennas such as DRA?? ... two dielectric materials, one comes from DRA and another from substrate.

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