CPC H01P 3/08 (2013.01) [H04B 1/02 (2013.01); H04B 3/52 (2013.01)] | 28 Claims |
1. A high frequency transmission device comprising:
a dielectric; and
a transmission line adapted for transmitting therethrough high frequency signals, wherein
at least part of the transmission line is located on or inside the dielectric,
at least part of the transmission line is composed of a resistance reducing material composed of fine particles,
the resistance reducing material has a physical property that where a high frequency signal to be transmitted through the transmission line is of frequencies within one or more specific frequency bands, an alternating current resistance value of the resistance reducing material drops sharply, as compared with an alternating current resistance value in a case where a high frequency signal to flow through the transmission line is of frequencies outside the one or more specific frequency bands,
the transmission line comprises
at least one signal conductor, at least part of the or each signal conductor is provided on or inside the dielectric, and
a first ground conductor extending along at least part of the or each signal conductor, the or each signal conductor includes
a first signal conductor portion having a direct-current resistance value that is smaller than that of the resistance reducing material, and
a second signal conductor portion composed of the resistance reducing material and arranged on a side closer to the first ground conductor than the first signal conductor portion is, and
the first ground conductor includes
a first ground conductor portion having a direct-current resistance value that is smaller than that of the resistance reducing material, and
a second ground conductor portion composed of the resistance reducing material and arranged on a side closer to the at least one signal conductor than the first ground conductor portion of the first ground conductor is.
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