| 摘要 |
A high frequency module for converting a high frequency wave in a free space to a high frequency wave in a planar waveguide includes two metal plates, a dielectric substrate and a planar waveguide disposed on the dielectric substrate. The dielectric substrate between the two metal plates has the planar waveguide disposed thereon, and the planar waveguide protrudes either in a through hole bored in one of the two metal plates, or in a hollow space defined by the other of the two metal plates on the dielectric substrate.
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