STRIP BAND-PASS FILTER Russian patent published in 2021 - IPC H01P1/203 

FIELD: ultra-high frequency equipment.

SUBSTANCE: invention relates to ultra-high frequency equipment, and it is intended for frequency selection of signals. A strip band-pass filter with high selectivity contains dielectric substrate suspended in a metal case-shield, on both surfaces of which strip metal conductors connected to the shield and electromagnetically interconnected are applied. A pair of strip conductors located on different surfaces of substrate forms a strip resonator. One of resonators, for example, the middle one, unlike the others is U-shaped, and between adjacent resonators, there are additional strip conductors that create a cross capacitive coupling, as well as an additional strip conductor that creates a cross inductive coupling.

EFFECT: increase in the selectivity by symmetrically positioning attenuation poles relatively to the center of the filter bandwidth.

1 cl, 2 dwg