BYPASS WITH CONTROLLED BANDWIDTH Russian patent published in 2021 - IPC H03H11/12 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and communications and can be used as an interface for allocating a given spectrum of a signal source. A filter is proposed that is based on two operational amplifiers (1), (2) and contains a control and frequency band adjustment unit consisting of a series-connected peak detector (4), an analog-to-digital converter (5), a control device (6), a digital adder (7), a digital-to-analog converter (8), a comparator (9), a computer (10) and control links of high and low frequency filters, each of which consists of series-connected resistors (11), (19) and electronic keys (12), (20). This implementation of the bypass filter eliminates noise signals in the receiving path, programmatically rebuilds the frequency band and suppresses interference.

EFFECT: reduction in the noise signals of the upper and lower frequencies.

1 cl, 1 dwg