公开(公告)号：NO20002139D0

公开(公告)日：2000-04-27

申请号：NO20002139

申请日：2000-04-27

Applicant: TELIA AB

Inventor： BAHLENBERG GUNNAR ,  BENGTSSON DANIEL ,  HOKANSSON SIWERT ,  ISAKSSON ANDERS ,  ISAKSSON LARS-KE ,  ISAKSSON MIKAEL ,  HANSSON MAGNUS ,  LAHTI MAURTIZ ,  LJUNGGREN LIS-MARIE ,  LUNDBERG HANS ,  NORDSTROEM TOMAS ,  OLSSON LENNART ,  OLOFSSON SVEN-RUNE ,  STEFANSSON TOMAS ,  IMAN HANS ,  IKVIST GOERAN ,  IDLING PER ,  DENTGEN PETRA ,  SJOEBERG FRANCK

IPC: H04B3/23 ,  H04B

Abstract: The hybrid circuit can be used to substantially reduce near echo signals. The circuit includes a balanced 2-wire to 4-wire hybrid for interconnecting a two wire receive path and a two wire transmit path to a two wire transmission line. The two wire receive path connects the balanced hybrid to an A/D converter and the two wire transmit path connects a D/A converter to the balanced hybrid. The two wire receive path contains a filter, dimensioned to remove signals transmitted from the D/A converter. The invention is particularly adapted for use with FDD and OFDD.

公开(公告)号：NO20002139L

公开(公告)日：2000-06-29

申请号：NO20002139

申请日：2000-04-27

Applicant: TELIA AB

Inventor： BAHLENBERG GUNNAR ,  BENGTSSON DANIEL ,  HOKANSSON SIWERT ,  ISAKSSON ANDERS ,  ISAKSSON LARS-KE ,  ISAKSSON MIKAEL ,  HANSSON MAGNUS ,  LAHTI MAURTIZ ,  LJUNGGREN LIS-MARIE ,  LUNDBERG HANS ,  NORDSTROEM TOMAS ,  OLSSON LENNART ,  OLOFSSON SVEN-RUNE ,  STEFANSSON TOMAS ,  IMAN HANS ,  IKVIST GOERAN ,  IDLING PER ,  DENTGEN PETRA ,  SJOEBERG FRANCK

IPC: H04B3/23

Abstract: The hybrid circuit can be used to substantially reduce near echo signals. The circuit includes a balanced 2-wire to 4-wire hybrid for interconnecting a two wire receive path and a two wire transmit path to a two wire transmission line. The two wire receive path connects the balanced hybrid to an A/D converter and the two wire transmit path connects a D/A converter to the balanced hybrid. The two wire receive path contains a filter, dimensioned to remove signals transmitted from the D/A converter. The invention is particularly adapted for use with FDD and OFDD.

公开(公告)号：NO20002139A

公开(公告)日：2000-06-29

申请号：NO20002139

申请日：2000-04-27

Applicant: TELIA AB

Inventor： BAHLENBERG GUNNAR ,  BENGTSSON DANIEL ,  HOKANSSON SIWERT ,  ISAKSSON ANDERS ,  ISAKSSON LARS-KE ,  ISAKSSON MIKAEL ,  HANSSON MAGNUS ,  LAHTI MAURTIZ ,  LJUNGGREN LIS-MARIE ,  LUNDBERG HANS ,  NORDSTROEM TOMAS ,  OLSSON LENNART ,  OLOFSSON SVEN-RUNE ,  STEFANSSON TOMAS ,  IMAN HANS ,  IKVIST GOERAN ,  IDLING PER ,  DENTGEN PETRA ,  SJOEBERG FRANCK

IPC: H04B3/23

CPC classification number: H04B3/23