Apparatus for coupling signals to or from a two-wire line

Details Apparatus for coupling signals to or from a two-wire line Apparatus for coupling signals to or from a two-wire line

1981-12-23

1984-06-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370123, 179 2DP, 333131, H04B 150

Patent

active

044569866

ABSTRACT:
Voice-band signals are coupled to and from a telephone subscriber line via a low-pass filter which has a shunt capacitor coupled across the line. In order to simultaneously couple above voice-band signals to and from the line, this capacitor is coupled to the line via windings of a transformer. The above voice-band signals are coupled via the transformer to and from the line, for example via series inductors which are series resonant with the filter capacitor, as reflected through the transformer, at above voice-band signal frequencies. A parallel resonant circuit, which has a low impedance in the voice-band, is connected in parallel with a winding of the transformer to prevent degradation of the filter characteristics in the voice-band.

REFERENCES:
patent: 4368361 (1983-01-01), Chung et al.
patent: 4378470 (1983-03-01), Murto et al.

Affiliated with

Also associated with

Rating

Apparatus for coupling signals to or from a two-wire line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for coupling signals to or from a two-wire line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for coupling signals to or from a two-wire line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2235162