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:
Jun. 03, 2003
Filed:
Sep. 18, 2000
Johann Pfeiffer, Vienna, AT;
Manfred Listopad, Vienna, AT;
Ericsson Austria AG, Vienna, AT;
Abstract
The invention relates to a filter arrangement for separating analog or digital baseband signals, for example, POTS or ISDN signals and digital wideband signals, which are simultaneously transmitted on a two-wire line of a message transmission system. In accordance with an exemplary embodiment of the invention, the filter arrangement has a bi-directional low-pass filter ( ) and a bi-directional high-pass filter ( ). The low-pass filter ( ) includes a first filter ( ) with a first passband. The first filter ( ) permits flow-through of direct current. A second filter ( ) with a second passband is preferably arranged assembled by connecting the inputs and outputs of the first and second filters ( ) in parallel.