Patent ID: 7061439

Claim:
An antenna comprising: an elongate laminated core, which has a first group including a plurality of thin plates of amorphous soft magnetic alloy laminated with each other and a second group including a plurality of thin plates of amorphous soft magnetic alloy laminated with each other and which is configured by stacking the first and second groups one another; a core case, which has an electrical insulating property and houses the laminated core; and a coil, which is wound around the laminated core between both end portions of the laminated core through the core case, wherein each of the thin plates of the laminated core includes flanges provided at both end portions thereof, and a coil wound portion provided between the both end portions, and the core case includes projections, which push the both end portions of the thin plates of the second group to separate from the both end portions of the thin plates of the first group in the laminating direction of the thin plates of the laminated core while the laminated core is housed in the core case.