TH2296EX - Arrangement of filter circuits for use in signaling systems - Google Patents

Abstract

It is a filter circuit arrangement for use in signal processing systems of the type operating with signals at first and second frequencies. The arrangement was made using three second-order filter circuits (B1, B2, and B3), each of which has coefficients, a, A and b filter circuits, (B1) and (B2) filter circuits, and a filter (B1). ) And (B3) are connected. Filter (B2) filter output signal (F1), which is an indication of a filter circuit with a finite-gain resonator characteristic signal with a center frequency at the first frequency. Filter circuit (B3) Filter output signal (F2, F3) The F2 signal is indication of a filter circuit with a finite-gain resonator signal that has a center frequency at two And zero at the first frequency, and the signal (F3) indicates a filter circuit centered at the first and second frequencies.

Claims (1)

1. The arrangement of filter circuits for use in signal processing systems of the type operating on signals at the first and second frequencies f1 and f2 are achieved by using more than one ordinal filter circuit. Each circuit has a filter coefficient a, A and b, the first and second output terminals, and the input terminals look like One filter circuit receives an input at its input terminal. And at the output terminal on one of it creates a resonator characteristic signal. Gain is limited to frequency f1 and passes to the input terminal of the second filter circuit. And the first filter circuit at its second output terminal has a zero signal