Resonant via structures in multilayer substrates and filters based on these via structures
First Claim
1. A resonant via structure, comprising:
- a multilayer substrate, including a plurality of conductor layers and a dielectric isolating each of said plurality of conductor layers;
a signal via conductor, disposed through said multilayer substrate; and
a plurality of ground vias, disposed through said multilayer substrate and around said signal via conductor,wherein said plurality of conductor layers comprise;
a first plurality of signal conductive plates connected to said signal via conductor;
a second plurality of signal conductive plates connected to said signal via conductor;
a first plurality of ground conductive plates connected to said plurality of ground vias and disposed on a same one of said plurality of conductor layers as said first plurality of signal conductive plates;
a second plurality of ground conductive plates connected to said plurality of ground vias and disposed on a same one of said plurality of conductor layers as said second plurality of signal conductive plates;
a third plurality of ground conductive plates connected to said plurality of ground vias and, in said third plurality of ground conductive plates, each ground conductive plate being disposed on one of said plurality of conductor layers above or below with respect to one of said first plurality of signal conductive plates;
a plurality of clearance areas separating said third plurality of ground conductive plates from said signal via conductor;
a first plurality of isolating slits separating said first plurality of signal conductive plates from said plurality of ground vias and said first plurality of ground conductive plates; and
a second plurality of isolating slits separating said second plurality of signal conductive plates from said plurality of ground vias and said second plurality of ground conductive plates,wherein each of said first plurality of signal conductive plates is arranged under or above of one of said third plurality of ground conductive plates, andwherein said multilayer substrate comprises;
a first artificial medium section, disposed between said signal via and said plurality of ground vias in a plane of said plurality of conductor layers and between a first and another layers of said plurality of conductor layers in a direction of said signal via, having a first relative effective permittivity, wherein said first artificial medium section is formed by said first plurality of signal plates, said first plurality of isolating slits, said third plurality of ground plates, and said plurality of clearance holes; and
a second artificial medium section, disposed between said signal via and said plurality of ground vias in the plane of said plurality of conductor layers and between said another and last layers of said plurality of conductor layers in the direction of said signal via, having a second relative effective permittivity which is different from said first relative effective permittivity, andwherein said second artificial medium section is formed by said second plurality of signal plates and said second plurality of isolating slits.
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Accused Products
Abstract
A resonant via structure is provided with a multilayer substrate, a signal via conductor and ground vias. The multilayer substrate includes conductor layers and a dielectric. The dielectric isolates each of the conductor layers. The signal via conductor is disposed through the multilayer substrate. The ground vias are disposed through the multilayer substrate and around the signal via conductor. The dielectric comprises two sections disposed between the signal via and ground vias, in the plane of conductor layers. The first section is disposed between the first layer and other layer of the conductor layers. The second section is disposed between the other layer and the last layer of the conductor layers.
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Citations
20 Claims
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1. A resonant via structure, comprising:
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a multilayer substrate, including a plurality of conductor layers and a dielectric isolating each of said plurality of conductor layers; a signal via conductor, disposed through said multilayer substrate; and a plurality of ground vias, disposed through said multilayer substrate and around said signal via conductor, wherein said plurality of conductor layers comprise; a first plurality of signal conductive plates connected to said signal via conductor; a second plurality of signal conductive plates connected to said signal via conductor; a first plurality of ground conductive plates connected to said plurality of ground vias and disposed on a same one of said plurality of conductor layers as said first plurality of signal conductive plates; a second plurality of ground conductive plates connected to said plurality of ground vias and disposed on a same one of said plurality of conductor layers as said second plurality of signal conductive plates; a third plurality of ground conductive plates connected to said plurality of ground vias and, in said third plurality of ground conductive plates, each ground conductive plate being disposed on one of said plurality of conductor layers above or below with respect to one of said first plurality of signal conductive plates; a plurality of clearance areas separating said third plurality of ground conductive plates from said signal via conductor; a first plurality of isolating slits separating said first plurality of signal conductive plates from said plurality of ground vias and said first plurality of ground conductive plates; and a second plurality of isolating slits separating said second plurality of signal conductive plates from said plurality of ground vias and said second plurality of ground conductive plates, wherein each of said first plurality of signal conductive plates is arranged under or above of one of said third plurality of ground conductive plates, and wherein said multilayer substrate comprises; a first artificial medium section, disposed between said signal via and said plurality of ground vias in a plane of said plurality of conductor layers and between a first and another layers of said plurality of conductor layers in a direction of said signal via, having a first relative effective permittivity, wherein said first artificial medium section is formed by said first plurality of signal plates, said first plurality of isolating slits, said third plurality of ground plates, and said plurality of clearance holes; and a second artificial medium section, disposed between said signal via and said plurality of ground vias in the plane of said plurality of conductor layers and between said another and last layers of said plurality of conductor layers in the direction of said signal via, having a second relative effective permittivity which is different from said first relative effective permittivity, and wherein said second artificial medium section is formed by said second plurality of signal plates and said second plurality of isolating slits. - 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