System and method for improving performance of coplanar waveguide bends at mm-wave frequencies
First Claim
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1. An apparatus comprising:
- a substrate having a top surface and a bottom surface;
a waveguide disposed on the top surface of the substrate, the waveguide having a pair of coplanar ground planes and a signal plane positioned between the pair of coplanar ground planes, the pair of coplanar ground planes co-extending with the signal plane, the waveguide defining a 90 degree bend with an inner edge and a chamfered outer edge; and
an inner via being positioned in one of the pair of coplanar ground planes adjacent to the inner edge of the 90 degree bend.
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Abstract
An apparatus including a liquid crystal polymer substrate having a top surface and a bottom surface, a coplanar waveguide formed on the top surface of the liquid crystal polymer substrate, the coplanar waveguide having a 90 degree bend with a mitered edge, an inner via positioned adjacent to an inner corner of the 90 degree bend, and an outer via positioned adjacent to the mitered edge of the 90 degree bend, the inner and outer vias positioned along a first plane that is perpendicular to a second plane defined by the mitered edge.
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Citations
19 Claims
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1. An apparatus comprising:
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a substrate having a top surface and a bottom surface; a waveguide disposed on the top surface of the substrate, the waveguide having a pair of coplanar ground planes and a signal plane positioned between the pair of coplanar ground planes, the pair of coplanar ground planes co-extending with the signal plane, the waveguide defining a 90 degree bend with an inner edge and a chamfered outer edge; and an inner via being positioned in one of the pair of coplanar ground planes adjacent to the inner edge of the 90 degree bend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a liquid crystal polymer substrate having a top surface and a bottom surface; a coplanar waveguide disposed on the top surface of the liquid crystal polymer substrate, the coplanar waveguide having a pair of coplanar ground planes and a signal plane positioned between the pair of coplanar ground planes, the pair of coplanar ground planes co-extending with the signal plane, the coplanar waveguide defining a 90 degree bend with a mitered edge; an inner via positioned in one of the pair of coplanar ground planes adjacent to an inner corner of the 90 degree bend; and an outer via positioned in the other one of the pair of coplanar ground planes adjacent to the mitered edge of the 90 degree bend, the inner and outer vias being positioned along a first plane that is perpendicular to a second plane defined by the mitered edge. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus comprising:
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a liquid crystal polymer substrate having a top surface and a bottom surface; a coplanar waveguide disposed on the top surface of the liquid crystal polymer substrate, the coplanar waveguide having a pair of coplanar ground planes and a signal plane positioned between the pair of coplanar ground planes, the pair of coplanar ground planes co-extending with the signal plane, the coplanar waveguide defining a 90 degree bend with an inner edge and a chamfered outer edge; an inner via positioned in one of the pair of coplanar ground planes adjacent to the inner edge of the 90 degree bend; and an outer via positioned in the other one of the pair of coplanar ground planes adjacent to the chamfered outer edge of the 90 degree bend, the inner and outer vias being positioned along a first plane that is perpendicular to a second plane defined by the chamfered outer edge. - View Dependent Claims (17, 18, 19)
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Specification