HIGH-FREQUENCY TRANSMISSION LINE
First Claim
1. A high-frequency transmission line comprising:
- a multilayer base body including a plurality of base materials stacked on top of one another;
a first ground conductor arranged on one main surface side of the multilayer base body;
a second ground conductor arranged on another main surface side of the multilayer base body;
a first signal line arranged within the multilayer base body and sandwiched between the first ground conductor and the second ground conductor, the first signal line being spaced apart from the first ground conductor by a first distance, the first signal line having a first line width; and
a second signal line arranged within the multilayer base body and sandwiched between the first ground conductor and the second ground conductor, the second signal line being spaced apart from the first ground conductor by a second distance, the second signal line having a second line width;
whereinthe first line width is larger than the second line width;
the first distance is longer than the second distance; and
the second ground conductor includes a plurality of first opening portions arranged along the first signal line and a plurality of second opening portions arranged along the second signal line.
1 Assignment
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Accused Products
Abstract
A first signal line is closer to a second ground conductor than a second signal line and, hence, crosstalk between the first and second signal lines is unlikely to be generated. By providing first opening portions in the second ground conductor, capacitive coupling between the first and second signal lines is reduced. Hence, in a transmission line including the first signal line, an increase in the capacitance due to the increased width of the first signal line is cancelled out by a decrease in the capacitance due to the increased distance from the first ground conductor and the first opening portions. Further, the width of the high-frequency transmission line need not be large. Further, since the capacitance is reduced by the first and second opening portions, the distances between the first ground conductor and the first and second signal lines are shortened.
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Citations
20 Claims
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1. A high-frequency transmission line comprising:
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a multilayer base body including a plurality of base materials stacked on top of one another; a first ground conductor arranged on one main surface side of the multilayer base body; a second ground conductor arranged on another main surface side of the multilayer base body; a first signal line arranged within the multilayer base body and sandwiched between the first ground conductor and the second ground conductor, the first signal line being spaced apart from the first ground conductor by a first distance, the first signal line having a first line width; and a second signal line arranged within the multilayer base body and sandwiched between the first ground conductor and the second ground conductor, the second signal line being spaced apart from the first ground conductor by a second distance, the second signal line having a second line width;
whereinthe first line width is larger than the second line width; the first distance is longer than the second distance; and the second ground conductor includes a plurality of first opening portions arranged along the first signal line and a plurality of second opening portions arranged along the second signal line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification