Multilayered RF signal transmission circuit and connecting method therein
OwnerKuniyoshi Nakadainventor
Life of this patent
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Abstract
A multilayered RF signal transmission circuit includes an interlevel via hole comprised of a trunk via hole and a branch via hole. The trunk via hole is formed to pass through a region where a plurality of conductors overlap in a direction perpendicular to planes including them, and to run in a direction perpendicular to a signal transmission direction of the plurality of conductors. The branch via hole runs from each end in a longitudinal direction, along which the trunk via hole runs, of the trunk via hole for a predetermined length substantially symmetrically at a predetermined angle with respect to a direction perpendicular to the longitudinal direction.
Claims11
A multilayered RF signal transmission circuit for electromagnetically coupling a plurality of conductors respectively formed in different layers formed through ground layers to each other, thereby transmitting an RF signal, comprising an interlevel via hole comprised of a trunk via hole and a branch via hole, said trunk via hole being formed to pass through a region where said plurality of conductors overlap in a direction perpendicular to planes including said plurality of conductors, and to run in a direction perpendicular to a signal transmission direction of said plurality of conductors, and said branch via hole running from each end in a longitudinal direction, along which said trunk via hole runs, of said trunk via hole for a predetermined length substantially symmetrically at a predetermined angle with respect to a direction perpendicular to said longitudinal direction.
A connecting method in a multilayered RF signal transmission circuit, of electromagnetically coupling a plurality of conductors respectively formed in different layers formed through ground layers to each other, thereby transmitting an RF signal, said method comprising electromagnetically coupling said plurality of conductors through an interlevel via hole comprised of a trunk via hole and a branch via hole, said trunk via hole being formed to pass through a region where said plurality of conductors overlap in a direction perpendicular to planes including said plurality of conductors, and to run in a direction perpendicular to a signal transmission direction of said plurality of conductors, and said branch via hole running from each end in a longitudinal direction, along which said trunk via hole runs, of said trunk via hole for a predetermined length substantially symmetrically at a predetermined angle with respect to a direction perpendicular to said longitudinal direction, thereby transmitting the RF signal.
Dependencies are inferred from the claim text.