WIRING SUBSTRATE, FILTER DEVICE AND PORTABLE EQUIPMENT
First Claim
Patent Images
1. A wiring substrate comprising:
- a wiring layer including a pair of differential transmission lines;
a conductive layer where an electric potential thereof is fixed; and
an insulating layer provided between the wiring layer and the conductive layer,wherein the conductive layer has a region formed by an electrically continuous conductor, andwherein as seen from a stacking direction, the pair of transmission lines intersects with the conductor at a plurality of positions.
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Abstract
In a wiring substrate, a wiring layer includes a pair of differential transmission lines. A conductive layer is provided on one side of the wiring layer. The conductive layer is grounded. An insulating layer is provided between the wiring layer and the conductive layer. The conductive layer includes a region, formed by an electrically continuous conductor, within a filter region. At least part of the conductor is turned around in the region. Seen from a stacking direction, the pair of differential transmission lines intersects with at least two strip portions disposed counter to each other because of the turning-around of the electrically continuous conductor.
10 Citations
12 Claims
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1. A wiring substrate comprising:
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a wiring layer including a pair of differential transmission lines; a conductive layer where an electric potential thereof is fixed; and an insulating layer provided between the wiring layer and the conductive layer, wherein the conductive layer has a region formed by an electrically continuous conductor, and wherein as seen from a stacking direction, the pair of transmission lines intersects with the conductor at a plurality of positions. - View Dependent Claims (2, 3, 4, 5, 6, 12)
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7. A wiring substrate comprising:
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a wiring layer including a pair of differential transmission lines; a conductive layer, where an electric potential thereof is fixed, provided on one side of the wiring layer; and an insulating layer provided between the wiring layer and the conductive layer; another conductive layer, where an electric potential thereof is fixed, provided on the other side of the wiring layer; and another insulating layer provided between the another conductive layer and the wiring layer, wherein the conductive layer has a region formed by an electrically continuous conductor, wherein as seen in a stacking direction, the pair of transmission lines intersects with the conductor at a plurality of positions, wherein the another conductive layer has a region formed by another electrically continuous conductor, and wherein as seen in the stacking direction, the pair of transmission lines intersects with the another conductor at a plurality of positions. - View Dependent Claims (8, 9, 10)
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11. A filter device comprising:
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a wiring layer including a pair of differential transmission lines; a conductive layer where an electric potential thereof is fixed; an insulating layer provided between the wiring layer and the conductive layer; a first external terminal connected to one end of one of the differential transmission line pair, the first external terminal being exposed on a surface of the filter device; a second external terminal connected to the other end of one of the differential transmission line pair, the second external terminal being disposed on a surface of the filter device; a third external terminal connected to one end of the other of the differential transmission line pair, the third external terminal being exposed on a surface of the filter device; a fourth external terminal connected to the other end of the other of the differential transmission line pair, the fourth external terminal being disposed on a surface of the filter device; and a fifth external terminal connected to the conductive layer, the fifth external terminal being exposed on a surface of the filter device, wherein the conductive layer has a region formed by an electrically continuous conductor, and wherein as seen in a stacking direction, the pair of transmission lines intersects with the conductor at a plurality of positions.
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Specification