BANDPASS FILTER Russian patent published in 2015 - IPC H03H7/09 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio electronics and can be used for partial selection of high-frequency signals in radio devices, television, communication systems and radio links for transmitting telecommunication data. The bandpass filter comprises first and second parallel circuits with partial inductive connection at the input and output of the filter, respectively, the resonance frequency f₀ of which is equal to the band centre f₀, a series communication circuit, also connected to the first and second parallel circuits with partial inductive connection; the input and output of the bandpass filter are connected in parallel to balancing capacitors, and the capacitance of the series communication circuit is equal to the capacitance of the parallel circuits with partial inductive connection.

EFFECT: reduced non-uniformity of frequency response in the filter band pass.

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