Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1979-12-27
1981-07-21
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333212, 333230, H01P 1208, H01P 706, H01P 120
Patent
active
042801133
ABSTRACT:
In a microwave filter including a plurality of resonator cavities, at least one of the windows between cavities for coupling them is formed near the end portions of the resonance rods in the cavities, and a part of one of the coupling loops for transmitting signals of microwave frequencies is coplanar with the opening thereby to form an attentuation pole capable of abrupt attenuation of any image frequency.
REFERENCES:
patent: 3538466 (1970-11-01), Brand
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Nussbaum Marvin L.
Shoup Guy W.
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