Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE442706ApublicationCriticalpatent/BE442706A/xx
H04B3/28—Reducing interference caused by currents induced in cable sheathing or armouring
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
H03H7/01—Frequency selective two-port networks
H03H7/0123—Frequency selective two-port networks comprising distributed impedance elements together with lumped impedance elements
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
H03H7/01—Frequency selective two-port networks
H03H7/17—Structural details of sub-circuits of frequency selective networks
H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
H03H7/1758—Series LC in shunt or branch path
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/738—Interface circuits for coupling substations to external telephone lines
H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults