MICROSTRIP DUAL-BAND BANDPASS FILTER Russian patent published in 2015 - IPC H01P1/203 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a microstrip dual-band bandpass filter designed for frequency selection of signals at two carrier frequencies and which is used in microwave engineering in selective circuits of receiving and transmitting systems. The filter comprises a dielectric substrate (1), on one side of which an earthed base (2) is deposited and on the other side strip conductors, which are electromagnetically coupled with each other and are arranged in two parallel rows, wherein conductors of the first (3) and second (5) row differ from each other by their length. The centre conductors (4, 6) in each row differ by length and width from conductors in the same row, wherein the length of the sections of the outermost conductors (7), which interact with conductors of each row, is different.

EFFECT: higher technological effectiveness owing to absence of capacitance at outermost resonators.

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