发明名称 |
Förbättringar i samband med undertryckning av korthållseko |
摘要 |
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. |
申请公布号 |
SE9704010(L) |
申请公布日期 |
1999.05.04 |
申请号 |
SE19970004010 |
申请日期 |
1997.11.03 |
申请人 |
TELIA AB |
发明人 |
OLSSON LENNART;BAHLENBERG K-G;BENGTSSON DANIEL;HAAKANSSON SIWERT;ISAKSSON ANDERS;ISAKSSON L-AA;ISAKSSON MIKAEL;JOHANSSON MAGNUS;LATHI MAURITZ;LJUNGGREN KARIN L-M;LUNDBERG HANS;NORDSTROEM TOMAS;OLOFSSON S-R;STEFANSSON TOMAS;OEHMAN HANS;OEKVIST S G;OEDLING PER;DENTGEN PETRA;SJOEBERG FRANK |
分类号 |
H04B3/23;(IPC1-7):H04B3/23 |
主分类号 |
H04B3/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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