STRIPLINE NONREFLECTING BAND-ELIMINATION FILTER ( VARIANTS ) Russian patent published in 1999 - IPC

FIELD: SHF equipment, frequency-selective circuits. SUBSTANCE: in agreement with first variant filter is based on asymmetrical stripline. It includes dielectric plate with grounding base. First, quarter-wavelength, and second conductors are deposited on dielectric plate and are connected in series. Two more conductors some ends of which are linked via capacitive gaps to ends of quarter-wavelength conductor and which other ends are interconnected via parallel inductive rod are deposited on dielectric plate. There are presented nine structural variants of band-elimination filter based on transmission striplines. EFFECT: enhanced attenuation on central frequency of rejection band with simultaneous maintenance of low level of mismatch on this frequency. 10 cl, 30 dwg