MICROSTRIP BROADBAND FILTER Russian patent published in 2018 - IPC H01P1/00 

FIELD: radio engineering, communication.

SUBSTANCE: microstrip broadband filter contains a dielectric substrate with a grounded base on one side and strip conductors electrically connected to each other on the second side. Narrow and wide rectangular strip conductors are connected to each other in the form of irregular meander, its extreme narrow conductors at the loose ends are base-grounded, with input and output ports are connected conductively to the extreme wide meander conductors through the lengths of microstrip lines with a wave impedance jump.

EFFECT: expansion of the stop band, increase in the steepness of the low-frequency slope of the frequency characteristic, expansion of the working bandwidth.

2 dwg