FILTER BUILT AROUND COUPLED HETEROGENEOUS LINES Russian patent published in 1997 - IPC

Abstract RU 2099822 C1

FIELD: microwave engineering; transceiving equipment and instrumentation for filtering off useful signal in passband and suppressing stray components of signal in rejection band. SUBSTANCE: filter has quarter-wave sections 1 of coupled HETEROGENEOUS lines. No-load condition is superposed on inputs of transmission lines on side of sections 2. Sections are interconnected in cascade and connected to input and output transmission lines 3. Amounts of coupling of coupled HETEROGENEOUS lines at section inputs are chosen so that each section can shape its own attenuation pole near filter passband. EFFECT: improved selectivity of filter. 11 dwg

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RU 2 099 822 C1

Authors

Aganin A.G.

Dates

1997-12-20—Published

1996-02-08—Filed