公开(公告)号：EP1496621A1

公开(公告)日：2005-01-12

申请号：EP04253828.0

申请日：2004-06-25

申请人： SEIKO EPSON CORPORATION

发明人： Watanabe, Toru ,  Takada, Yutaka ,  Inoguchi, Makoto ,  Yajima, Aritsugu ,  Tanaka, Kazuaki ,  Takagi, Shigekazu

IPC分类号： H04B1/40

CPC分类号： H04B1/006 ,  H04B1/0057 ,  H04B1/406 ,  H04B1/52

摘要： The invention seeks to provide a high-frequency composite component capable of: simplifying the circuits from the antenna to the input side of the high-frequency amplifier circuit; suppressing a loss in the signal; and reducing the cost and the size, when a wireless system using plural frequency bands, such as a wireless LAN system using plural frequencies, is constructed. The high-frequency composite component is fabricated by placing an antenna 1 on a multi-layer wiring board 41, placing a multiplexer/demultiplexer circuit 2, matching circuits 3 and 4, and balanced-to-unbalanced transformer circuits 5 and 6 inside the board 41 respectively, and providing input and output terminals 7 through 10 on the side surface of the board 41. The antenna 1 is connected to the multiplexer/demultiplexer circuit 2 via an unbalanced line path 11, and the multiplexer/demultiplexer 2 is connected to the matching circuits 3 and 4 via unbalanced line paths 12 and 13, respectively. The matching circuits 3 and 4 are connected to the balanced-to-unbalanced transformer circuits 5 and 6, respectively, via unbalanced line paths 14 and 15, respectively. The respective balanced terminals of the balanced-to-unbalanced transformer circuits 5 and 6 are connected to the input and output terminals 7 and 8, and 9 and 10, respectively, via balanced line paths 16 and 17, respectively.

摘要翻译： 本发明试图提供一种高频复合元件，其能够：简化从天线到高频放大器电路的输入侧的电路; 抑制信号中的损失; 并且当构建使用多个频带的无线系统（诸如使用多个频率的无线LAN系统）时降低成本和尺寸。 通过将天线1放置在多层布线板41上，将多路复用器/解复用器电路2，匹配电路3和4以及平衡 - 不平衡变压器电路5和6放置在电路板内部来制造高频复合元件 并在基板41的侧面上设置输入输出端子7〜10。天线1经由不平衡线路11与多路复用器/多路分离器电路2连接，多路复用器/多路分离器2与 通过不平衡线路径12和13分别匹配电路3和4。 匹配电路3和4分别通过不平衡线路径14和15分别连接到平衡 - 不平衡变压器电路5和6。 平衡 - 不平衡变压器电路5和6的各个平衡端子分别经由平衡线路径16和17连接到输入和输出端子7和8以及9和10。