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(b) A Butterworth low-pass analogue filter Hz(s) is required, with a cut-off frequency (-3 dB frequency) fc of 9 kHz, an
Posted: Sat May 21, 2022 1:02 am
by answerhappygod
- B A Butterworth Low Pass Analogue Filter Hz S Is Required With A Cut Off Frequency 3 Db Frequency Fc Of 9 Khz An 1 (717.02 KiB) Viewed 13 times
(b) A Butterworth low-pass analogue filter Hz(s) is required, with a cut-off frequency (-3 dB frequency) fc of 9 kHz, and at least 20 dB attenuation at a frequency of 15 kHz. (i) Showing your working, calculate the minimum order (n) of the filter to meet this specification (4 marks) (ii) Circuit diagrams for a first order filter and second order filter are given in Figure Q4. Explain how filter Hz(s) can be realised using these circuits. NOTE: you do not need to calculate component values. (4 marks) First order filter circuit Second order filter circuit Figure Q4 TOTAL MARKS FOR Q4: 25