发明名称 |
CYLINDRICAL CAVITY RESONATOR TYPE FILTER AND CYLINDRICAL CAVITY RESONATOR |
摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical cavity resonator type filter which improves attenuating characteristics of a frequency band which is slightly higher than a passing band. SOLUTION: In the cylindrical cavity resonator type filter, a plurality of the cylindrical cavity resonators 1, in which open windows are formed to the input end and the output end for electromagnetic waves, are mutually connected via a hole part of a coupling plate 6b through the open window formed to its own flange 11 and the open window formed to a flange 11 of the other cylindrical cavity resonator. A conductive member is mounted to the open window of each cylindrical cavity resonator 1. The conductive member does not substantially affect the resonance frequency in a basic mode compared with the state before mounting it. It only enhances the resonance frequency in a high-order mode. COPYRIGHT: (C)2004,JPO&NCIPI
|
申请公布号 |
JP2004266641(A) |
申请公布日期 |
2004.09.24 |
申请号 |
JP20030055977 |
申请日期 |
2003.03.03 |
申请人 |
SHIMADA PHYS & CHEM IND CO LTD |
发明人 |
TANAKA TOSHIHIRO;KOBAYASHI TOA |
分类号 |
H01P1/212;H01P1/208;H01P7/06;(IPC1-7):H01P1/212 |
主分类号 |
H01P1/212 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|