Explanation: Frequency shift is the difference between FSK signals of 1070 Hz and 1270 Hz frequency, which is 200 Hz. 8. Which filter is chosen to remove the carrier component in the frequency shift keying?
A. Three stage filter
B. Two stage filter
C. Single stage filter
D. All of the mentioned
Answer:A
Explanation: Frequency shift is the difference between FSK signals of 1070 Hz and 1270 Hz frequency, which is 200 Hz. 8. Which filter is chosen to remove the carrier component in the frequency shift keying?
A. Three stage filter B. Two stage filter C. Single stage filter D. All of the mentioned
Explanation: The high cut-off frequency of ladder filter is chosen to be approximately halfway between the maximum keying rate of 150Hz & twice the input frequency (≅ 2200Hz) which can be obtained using three stage filters. Sanfoundry Global Education & Learning Series – Linear Integrated Circuit.