发明名称 |
Microwave bandpass filter including dielectric resonators. |
摘要 |
<p>A dielectric resonator microwave bandpass filter includes a printed circuit board (40) supported within a cut-off waveguide (10, 12), with dielectric resonators (44) and coupling loops on an upper surface of the board and a well (42) beneath the board so that the resonators are well spaced from ground planes. Tuning screws (66) beneath the resonators, and coupling adjustment screws above the board adjacent to the coupling loops and between adjacent resonators, provide for adjustments to provide desired filter characteristics within a wide range. Isolators (30) within the waveguide have ports coupled to the resonators via micro-strip transmission lines comprising conductive tracks on the board and ports coupled to coaxial connectors (28) in end walls of the waveguide. The waveguide is formed from a cast body (10) and a flat lid (12).</p> |
申请公布号 |
EP0197653(A2) |
申请公布日期 |
1986.10.15 |
申请号 |
EP19860301617 |
申请日期 |
1986.03.06 |
申请人 |
NORTHERN TELECOM LIMITED |
发明人 |
SYRETT, BARRY ALBERT;KENNARD, PAUL ALAN |
分类号 |
H01P1/20;H01P1/00;H01P1/208;H01P1/212;H01P1/219;H01P7/10;(IPC1-7):H01P1/208 |
主分类号 |
H01P1/20 |
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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