Patent ID: 9583807
Date: 2017-02-28
CPC Classifications: H01P,H05K

Claim:
1. A filter comprising: a multilayer substrate including a plurality of conductor layers and a dielectric configured to isolate said conductor layers from each other; a first terminal disposed in one of said plurality of conductor layers; a second terminal disposed in said one conductor layer; a ground conductor disposed in said one conductor layer; and a hybrid resonator disposed in said multilayer substrate, wherein said hybrid resonator comprises: a first resonant element; a second resonant element; and a coupling strip configured to connect said first and said second resonant elements, wherein said first resonant element comprises: a first signal via disposed through said multilayer substrate; a first group of ground vias disposed through said multilayer substrate and configured to surround said first signal via; and a first artificial dielectric disposed in said multilayer substrate and between said first signal via and said first group of ground vias, wherein said first artificial dielectric comprises: a first conductive plate connected to said first signal via; and a first isolating slit configured to isolate said first conductive plate from said first group of ground vias, wherein said second resonant element comprises: a second signal via disposed through said multilayer substrate; a second group of ground vias disposed through said multilayer substrate and configured to surround said second signal via; and a second artificial dielectric disposed in said multilayer substrate and between said second signal via and said second group of ground via, and wherein said second artificial dielectric comprises: a second conductive plate connected to said second signal via; and a second isolating slit configured to isolate said second conductive plate from said second group of ground vias; and wherein said first terminal and said second terminal are connected to said coupling strip; and another hybrid resonator disposed in said multilayer substrate and connected to both said first and said second terminals; and a connection strip disposed in said one conductor layer configured to connect said hybrid resonator and said another hybrid resonator, wherein said another hybrid resonator comprises: a third resonant element; a fourth resonant element; and another coupling strip configured to connect said third and said fourth resonant elements, wherein said third resonant element comprise: a third signal via disposed through said multilayer substrate; a third group of ground vias disposed through said multilayer substrate and configured to surround said third signal via; and a third artificial dielectric disposed in said multilayer substrate and between said third signal via and said third group of ground vias, wherein said third artificial dielectric comprises: a third conductive plate connected to said third signal via; and a third isolating slit configured to isolate said third conductive plate from said third group of grounded via, and wherein said fourth resonant element comprise: a fourth signal via disposed through said multilayer substrate; a fourth group of ground vias disposed through said multilayer substrate and configured to surround said fourth signal via; and a fourth artificial dielectric disposed in said multilayer substrate and between said fourth signal via and said fourth group of ground vias, and wherein said fourth artificial dielectric comprises: a fourth conductive plate connected to said fourth signal via; and a fourth isolating slit configured to isolate said fourth conductive plate from said third group of ground vias; another ground conductor disposed in another one of said plurality of conductor layers and connected to said first, said second, said third and said fourth groups of ground vias wherein said first artificial dielectric further comprises: another first conductive plate disposed in said another conductor layer and connected to said first signal via; and another first isolating slit disposed in said another conductor layer configured to isolate said another first conductive late from said another ground conductor, wherein said second artificial dielectric further comprises: another second conductive plate disposed in said another conductor layer and connected to said second signal via; and another second isolating slit disposed in said another conductive layer configured to isolate another second conductive plate from said another ground conductor, wherein said third artificial dielectric further comprises: another third conductive plate disposed in said another conductor layer and connected to said third signal via; and another third isolating slit disposed in said another conductor layer configured to isolate said another third conductive late from sand another ground conductor, and wherein said fourth artificial dielectric further comprises: another fourth conductive plate disposed in said another conductor layer and connected to said fourth signal via; and another fourth isolating slit disposed in said another conductor layer configured to isolate said another fourth conductive plate from said another ground conductor, and wherein said first artificial dielectric and said second artificial dielectric are different in length along a thickness of said multilayer substrate.