DEMODULATOR FOR FREQUENCY-SHIFT KEYED SIGNALS BY USING THE GOERTZEL ALGORITHM

摘要

The invention relates to a demodulator for frequency-shift keyed signals by using the Goertzel algorithm according to the general recursive calculating rule, where with the sampling frequency and the required frequency . To reduce the mathematical complexity in feed-power-limited devices, it is proposed that the sampling frequency is an integral multiple of the frequency of the required discrete spectral component. See figure 1