BROADBAND BANDPASS FILTER Russian patent published in 2016 - IPC H01P1/203 

FIELD: instrument making.

SUBSTANCE: invention relates to microwave electronics, particularly to frequency-selective filters. Broadband bandpass filter comprises dielectric substrate one side of which is coated with grounded base, and on second side atrip conductor is applied partially split at one end. At that, micro strip conductor, having axial symmetry, is split by wide, and then narrow lengthwise slots with lengths from 12 to 36 % and from 14 to 41 % of length of conductor respectively. Along long side of conductor with its both sides parallel applied U-shaped folded conductors of communication. Corresponding conductors form resonators interconnected by inductively capacitor coupling, and size of twice splitted conductor and conductors of communication are selected so that their superimposed resonances simultaneously participated in formation of bandwidth. Filter tuning by frequency can be performed by changing length of conductors and slots between them.

EFFECT: high frequency-selective properties and expanded relative pass band filter.

1 cl, 2 dwg