What is the lowest order of the Butterworth filter with a pass band gain KP= -1 dB at ‚âà√≠¬¨¬©P= 4 rad/sec and stop band attenuation greater than or equal to 20dB at ‚âà√≠¬¨¬©S= 8 rad/sec?$#

What is the lowest order of the Butterworth filter with a pass band ga

1.	What is the lowest order of the Butterworth filter with a pass band gain KP= -1 dB at ‚âà√≠¬¨¬©P= 4 rad/sec and stop band attenuation greater than or equal to 20dB at ‚âà√≠¬¨¬©S= 8 rad/sec?$#
A.	4
B.	5
C.	6
D.	3
Answer» C. 6