The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2005
Filed:
Mar. 26, 2001
Richard H. Bailey, Raleigh, NC (US);
Richard H. Bailey, Raleigh, NC (US);
Alcatel, Paris, FR;
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.