发明名称 BANDPASS FILTER CIRCUIT
摘要 PROBLEM TO BE SOLVED: To fully prevent mutual interference even if many radio machines are operated simultaneously without making a circuit configuration complex. SOLUTION: Transmission waves from the radio machine 10 are outputted from a second port (b) of a first circulator 11, are totally reflected by a first BEF 22, are inputted to the second port (b), are outputted from a third port (c), and are inputted to a second circulator 14. The transmission waves in which transmission noise components are removed are transmitted from an antenna 17 through the second circulator 14. The reception waves received by the antenna 17 are outputted from the second port (b) of the second circulator 14, are totally reflected by a second BEF 25, are inputted to the second port (b), are outputted from a first port (a), and are inputted to the first circulator 11. Reception waves in which interference wave components are removed are received by the radio machine 10 through the first circulator 11. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2005268898(A) 申请公布日期 2005.09.29
申请号 JP20040074451 申请日期 2004.03.16
申请人 NIPPON ANTENNA CO LTD 发明人 ARAI TOSHIO
分类号 H04B1/50;(IPC1-7):H04B1/50 主分类号 H04B1/50
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