Antenna device and method for manufacturing antenna device
OwnerKoichi Harada, Tomohiro Suetsuna +1inventors
InventorsKoichi Harada, Tomohiro Suetsuna, Seiichi Suenaga
Life of this patent
Estimating the term…
Abstract
The invention provides a compact and thin antenna device capable of carrying out highly efficient transmission and reception. The antenna device includes an antenna substrate and an antenna arranged directly or in the vicinity of the main face of the antenna substrate. The antenna substrate comprises a plurality of insulating layers mutually layered and bonded, and a plurality of magnetic particles arranged in bonded interfaces of the insulating layers and being embedded in both of the insulating layers of the bonded interfaces.
Claims22
An antenna device comprising:
- an antenna substrate comprising a plurality of insulating layers mutually layered and bonded, and a plurality of magnetic particles arranged in bonded interfaces of the insulating layers and being embedded in both of the insulating layers of the bonded interfaces;
- and
- an antenna arranged directly or in the vicinity of the surface of the antenna substrate.
A method for manufacturing an antenna device, comprising:
- forming first and second ceramic sheets having mutually different compositions, each of the first and second ceramic sheets containing a compound of at least one metal selected from a group consisting of Mg, Al, Si, Ca, Cr, Ti, Zr, Ba, Sr, Zn, Mn, Hf and rare earth metals (including Y), and at least one of the first and second ceramic green sheets containing a compound of a magnetic metal;
- reciprocally laminating a plurality of the first and second ceramic green sheets;
- firing the laminated first and second green ceramic sheets to produce first and second ceramic layers;
- and
- precipitating the magnetic metal in the interfaces of the first and second ceramic layers from the ceramic layer containing the oxide of the magnetic metal out of the first and second ceramic layers by subjecting the first and second ceramic layers to reduction treatment.
Dependencies are inferred from the claim text.