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Tunable bandpass filter with constant absolute bandwidth using single tuning element
Tunable bandpass filter with constant absolute bandwidth using single tuning element
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机译:使用单调元素可调谐带通滤波器,具有恒定的绝对带宽
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摘要
The present invention is a tunable bandpass filter to provide a constant absolute bandwidth across a tuning range, comprising of a pair of resonators to determine a filter center frequency, each said resonator has a rectangular waveguide cavity, wherein said filter center frequency depends on the dimensions of said rectangular waveguide cavity; a pair of side walls attached to said pair of resonators to form a filter housing; a tuning element movably attached to at least one of said pair of side walls and extending in said filter housing and movable orthogonally to said pair of resonators, and wherein said dimensions of said rectangular waveguide cavity change by moving said tuning element, thereby said filter center frequency is changed.
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