Ceramic antenna module and methods of manufacture thereof
First Claim
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1. An antenna module, comprising:
- a composite dielectric body including at least one ceramic dielectric inclusion composed of at least one material selected from the group consisting of materials having a relative dielectric permittivity ≥
10 and materials having a relative dielectric permeability ≠
1, the at least one ceramic dielectric inclusion embedded in a dielectric host material selected from the group consisting of amorphous silica, titania, tantalates, pure alumina, admixtures thereof, and an organic media such that the composite dielectric body has an effective permittivity ≥
4;
a metallization layer adjacent the composite dielectric body and including a ground plane and at least one contact pad; and
at least one electrically conductive element disposed parallel to the metallization layer and electrically connected with the at least one contact pad, each conductive element disposed relative to the composite dielectric body such that the conductive element is resonant over a band of frequencies and has a length that is ≤
50% of the length that would be required to maintain the same resonance without the composite dielectric body,wherein the composite dielectric body further comprises a base dielectric layer of high-k ceramic material having a relative permittivity ε
R≥
10 disposed adjacent the ground plane, the base dielectric layer having a corresponding one or more vias to accommodate the electrical connection between the at least one electrically conductive element and the at least one contact pad, the base dielectric layer is uniformly dimensioned so as to modify the input impedance of the at least one electrically conductive element to substantially match an output impedance of at least one semiconductor die when electrically connected to the at least one contact pad.
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Abstract
Antenna modules that contain composite meta-material dielectric bodies that have high effective values of real permittivity and reductions in physical lengths of electrically conducting elements.
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Citations
17 Claims
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1. An antenna module, comprising:
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a composite dielectric body including at least one ceramic dielectric inclusion composed of at least one material selected from the group consisting of materials having a relative dielectric permittivity ≥
10 and materials having a relative dielectric permeability ≠
1, the at least one ceramic dielectric inclusion embedded in a dielectric host material selected from the group consisting of amorphous silica, titania, tantalates, pure alumina, admixtures thereof, and an organic media such that the composite dielectric body has an effective permittivity ≥
4;a metallization layer adjacent the composite dielectric body and including a ground plane and at least one contact pad; and at least one electrically conductive element disposed parallel to the metallization layer and electrically connected with the at least one contact pad, each conductive element disposed relative to the composite dielectric body such that the conductive element is resonant over a band of frequencies and has a length that is ≤
50% of the length that would be required to maintain the same resonance without the composite dielectric body,wherein the composite dielectric body further comprises a base dielectric layer of high-k ceramic material having a relative permittivity ε
R≥
10 disposed adjacent the ground plane, the base dielectric layer having a corresponding one or more vias to accommodate the electrical connection between the at least one electrically conductive element and the at least one contact pad, the base dielectric layer is uniformly dimensioned so as to modify the input impedance of the at least one electrically conductive element to substantially match an output impedance of at least one semiconductor die when electrically connected to the at least one contact pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An antenna module, comprising:
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a composite dielectric body including at least one ceramic dielectric inclusion composed of at least one material selected from the group consisting of materials having a relative dielectric permittivity ≥
10 and materials having a relative dielectric permeability ≠
1, the at least one ceramic dielectric inclusion embedded in a dielectric host material selected from the group consisting of amorphous silica, titania, tantalates, pure alumina, admixtures thereof, and an organic media such that the composite dielectric body has an effective permittivity ≥
4;a metallization layer adjacent the composite dielectric body and including a ground plane and at least one contact pad; and at least one electrically conductive element disposed parallel to the metallization layer and electrically connected with the at least one contact pad, each conductive element disposed relative to the composite dielectric body such that the conductive element is resonant over a band of frequencies and has a length that is ≤
50% of the length that would be required to maintain the same resonance without the composite dielectric body,wherein the ground plane comprises; a ground plane dielectric body having a first surface and a second surface; an electrical ground plane adjacent the first surface of the ground plane dielectric body; and a periodic array of capacitor pads disposed at the second surface of the ground plane dielectric body and electrically shorted through the ground plane dielectric body, the array having a uniform periodicity and a spacing between the capacitor pads such that a desired phase shift will be induced in a reflected E field component of an electromagnetic wave incident upon the ground plane and having a frequency within a bandgap range of frequencies. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification