Enhanced low pass filter

Details Enhanced low pass filter Enhanced low pass filter

2005-12-20

2005-12-20

Kuntz, Curtis (Department: 2643)

Telephonic communications

Substation or terminal circuitry

For loudspeaking terminal

C379S390040, C379S393000, C379S413030

Reexamination Certificate

active

06978011

ABSTRACT:
An ADSL POTS splitter includes an enhanced low pass filter. The enhanced low pass filter includes a first filter capacitor, a first non-isolated inductor, a second non-isolated inductor, a first isolated inductor and a common mode choke. The second non-isolated inductor is connected to the first non-isolated inductor. A first winding of the second non-isolated inductor is connected in series with a first winding of the first non-isolated inductor. A second winding of the second non-isolated inductor connected in series with a second winding of the first non-isolated inductor. The first isolated inductor is connected to the first non-isolated inductor with a first winding of the first isolated inductor connected in series with the first winding of the first non-isolated inductor and to a first lead of the first filter capacitor. A second winding of the first isolated inductor connected in series with the second winding of the first non-isolated inductor and to a second lead of the first filter capacitor. The first non-isolated inductor has a respective DC saturation current and the isolated inductor has a respective DC saturation current. The DC saturation current of the first non-isolated inductor is substantially greater than the DC saturation current of the isolated inductor for achieving higher inductance in the isolated inductor. The common mode choke is connected between the first non-isolated inductor and the first filter capacitor. A first winding of the common mode choke connected in series with the first winding of the first non-isolated inductor and with the first winding of the first isolated inductor. A second winding of the common mode choke is connected in series with the second winding of the first non-isolated inductor and with the second winding of the first isolated inductor.

REFERENCES:
patent: 5627501 (1997-05-01), Biran et al.
patent: 6137880 (2000-10-01), Bella
patent: 6181777 (2001-01-01), Kiko
patent: 6385315 (2002-05-01), Viadella et al.
patent: 6418221 (2002-07-01), Snow et al.
patent: 6473507 (2002-10-01), Eckert
patent: 6690721 (2004-02-01), Murphy et al.
patent: 6694016 (2004-02-01), Sun et al.
patent: 2002/0041676 (2002-04-01), DeCramer et al.
patent: 354129453 (1979-10-01), None

Affiliated with

Also associated with

Rating

Enhanced low pass filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Enhanced low pass filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced low pass filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3492915