公开(公告)号：EP0985269A1

公开(公告)日：2000-03-15

申请号：EP98910691.9

申请日：1998-02-17

申请人： Richard Hirschmann GmbH & Co.

发明人： MAIER, Hartmut ,  WENDEL, Wolfgang ,  EPPLE, Ralf ,  PASADU, Chaiyakarn

IPC分类号： H03H7/48

CPC分类号： H03H7/482

摘要： The invention relates to a high-frequency distribution network (1; 20) for transmitting high-frequency signals to at least one subscriber (14, 15), comprising at least one pair of signal transmission branches (4 to 7; 21 to 24) coupled in at least one high-frequency apparatus (3, 11, 13, 16, 25 to 28) connected thereto. At least one phase rotation element (17, 17', 18, 18', 29, 30) is connected into at least one signal transmission branch (4 to 7; 22, 24) of each pair (4/5, 6/7; 21/22, 23/24). Said element rotates the phase of the transmitted high-frequency wanted and unwanted signals by approximately 180° in relation to that of the other signal transmission branch of the pair. In this manner a large number of high-frequency apparatuses (3, 11, 13, 16), even if switched, can be connected in cascade in multi-cable receiving installations without exceeding the required minimum signal-to-noise ratio by signal coupling between the cables (4 to 7).