High frequency transmission line and high frequency board
First Claim
Patent Images
1. A high frequency transmission line comprising:
- a first high frequency transmission line having a signal line, a width of an edge portion thereof being different from a width of another portion thereof; and
a second high frequency transmission line different from said first high frequency transmission line, having a signal line which is connected to the edge portion of said signal line of the first high frequency transmission line.
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Abstract
Since a width of an edge portion of a signal line of a first high frequency transmission line is changed with respect to a width of another portion thereof, a deviation of impedances in a connection portion of the first and second high frequency transmission lines can be suppressed, so that signal reflections occurred in the connection portion can be lowered and a signal passing characteristic is improved.
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Citations
15 Claims
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1. A high frequency transmission line comprising:
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a first high frequency transmission line having a signal line, a width of an edge portion thereof being different from a width of another portion thereof; and
a second high frequency transmission line different from said first high frequency transmission line, having a signal line which is connected to the edge portion of said signal line of the first high frequency transmission line. - View Dependent Claims (2, 3, 4)
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5. A high frequency transmission line comprising:
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a first high frequency transmission line having a signal line in a layer of a dielectric substrate;
a second high frequency transmission line having a signal line in a different layer of a dielectric substrate;
a third signal line which is provided in a layer between said first signal line of said first high frequency transmission line and said second signal line of said second high frequency transmission line, and which is formed in such a manner that one edge of said third signal line is overlapped with said first signal line and another edge thereof is overlapped with said second signal line;
a first connection conductor for connecting said first signal line to said one edge of said third signal line; and
a second connection conductor for connecting said second signal line to said another edge of said third signal line. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A high frequency transmission line comprising:
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a first high frequency transmission line having a signal line in a layer of a dielectric substrate;
a second high frequency transmission line having a signal line in a different layer of a dielectric substrate, the edge portion being overlapped with said signal line of said first high frequency line;
a connection conductor for connecting said signal line of said first high frequency transmission line to said edge portion of said second high frequency transmission line; and
a conductor for shortening a distance between said signal line of said first high frequency transmission line and a ground conductor.
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12. A high frequency board for conducting a high frequency signal to a high frequency circuit via a high frequency transmission line which contains a first high frequency line and a second high frequency line different from said first high frequency line, wherein the high frequency transmission line comprises:
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a first high frequency transmission line having a signal line, a width of an edge portion thereof being different from a width of another portion thereof; and
a second high frequency transmission line different from said first high frequency transmission line, having a signal line which is connected to the edge portion of said signal line of the first high frequency transmission line. - View Dependent Claims (13)
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14. A high frequency board which conducts a high frequency signal to a high frequency circuit via a high frequency transmission line containing signal lines in different layers of a dielectric substrate, wherein the high frequency transmission line comprising:
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a first high frequency transmission line having a signal line in a layer of a dielectric substrate;
a second high frequency transmission line having a signal line in a different layer of a dielectric substrate;
a third signal line which is provided in a layer between said first signal line of said first high frequency transmission line and said second signal line of said second high frequency transmission line, and which is formed in such a manner that one edge of said third signal line is overlapped with said first signal line and another edge thereof is overlapped with said second signal line;
a first connection conductor for connecting said first signal line to said one edge of said third signal line; and
a second connection conductor for connecting said second signal line to said another edge of said third signal line.
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15. A high frequency board which conducts a high frequency signal to a high frequency circuit via a high frequency transmission line containing signal lines in different layers of a dielectric substrate, wherein the high frequency transmission line comprising:
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a first high frequency transmission line having a signal line in a layer of a dielectric substrate;
a second high frequency transmission line having a signal line in a different layer of a dielectric substrate, the edge portion being overlapped with said signal line of said first high frequency line;
a connection conductor for connecting said signal line of said first high frequency transmission line to said edge portion of said second high frequency transmission line; and
a conductor for shortening a distance between said signal line of said first high frequency transmission line and a ground conductor.
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Specification