Patent ID: 7042310
Filing Date: 2006-05-09
Classification: H01F,H03H

Abstract:
1. A frequency separating filter having a low-pass branch for low frequency signals, particularly of analog communication systems, and a high-pass branch for high frequency signals of digital communication systems, with multiple inductive components with magnetic cores, wherein the high-pass branch comprises a pass range above about 20 kHz, at least one component with a magnetic core made of an amorphous or nanocrystalline alloy, and wherein the alloy has the composition Co a (Fe 1−c Mn c ) b Ni d M e Si x B y C z , with M indicating one or more elements from the group Nb, Mo, Ta, Cr, W, Ge, and P and a+b+d+e+x+y+z=100, with Co: a=40–82 at %, Fe Mn/Fe: c=0–1, Ni: d=0–30 at %, M; e=0–5 at %, Si: x=0–17 at %, B: y=8–26 at %, C: z=0–3 at %,