Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1998-01-15
2000-10-17
Pascal, Robert
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333224, 333225, 333232, 333235, 333209, H01P 1202, H01P 1208
Patent
active
061338109
ABSTRACT:
An enhanced tunable coaxial cavity filter that may be tuned while it is shorted. The coaxial cavity filter may have one or more cavities. One or more of the cavities may include a switch for shorting the cavity. When a plurality of cavities are implemented, the cavities may be coupled in series such that shorting one of the cavities effectively shorts the entire filter. The switch for shorting the cavity may include a solenoid switch. The solenoid switch may be disposed within a stator that is stationary with respect to a rotatable rod for tuning the filter. Such a design has shown to be extremely robust for wear, vibration, and other considerations, even in high stress environments.
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K & L Microwave, Inc.
Pascal Robert
Summons Barbara
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