发明名称 |
Branching filter for transmitter-receiver. |
摘要 |
<p>A branching filter for a transmitter-receiver which is used in a microwave band comprising an orthogonal-mode transducer (waveguide branching filter), a reception filter comprising a band-eliminating filter 4 which is connected to the extension of the center axis of the waveguide of the orthogonal-mode transducer, and a transmission filter comprising a high pass filter containing a cut off waveguide which is directly and orthogonally connected to the orthogonal-mode transducer. The parts of the branching filter for the transmitter-receiver are integrally manufactured as one body by a lost wax process. Therefore, the branching filter for the transmitter-receiver can be manufactured as compact-size one body having no patch or linking portion. <IMAGE></p> |
申请公布号 |
EP0661771(A2) |
申请公布日期 |
1995.07.05 |
申请号 |
EP19940120745 |
申请日期 |
1994.12.27 |
申请人 |
NEC CORPORATION |
发明人 |
SUZUKI, TAKUYA, C/O NEC CORPORATION;MINOWA, YOSHIO, C/O NEC CORPORATION |
分类号 |
H01P1/209;H01P1/161;H01P1/213;H01P5/02;(IPC1-7):H01P1/213 |
主分类号 |
H01P1/209 |
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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