The transfer function of the fourth order bandpass filter is given by
First Section
a1 = 5436.0616, a0 = 3.78799×108
? 0 = a 0= 19462.7593 rad/s
The Q value is given by
Q = ? a1
0= 3.5803
The normalized component values are given by
C1 = 1/(2Q) = 0.1397 F, C2 = 1/(2Q) = 0. 1397 F, R2 = 4Q2 = 51.2743 ?, Ra = 2Q2 = 25.6372 ?, Rb = 2Q2 /(2Q2 - 1)= 1.0406 ?
Application of the magnitude scaling (km = 1000) and frequency scaling (kf = ?0 = 19462.7593) yields
C1 = 0.1397
F k m k× f= 7.1754 nF
C2 = 0.1397
F k m k× f= 7.1754 nF
R2 = 51.2743 ×1000 ? = 51.2743 k?
Ra = 25.6372 ×1000 ? = 25.6372 k?
Rb = 1.0406 ×1000 ? = 1.0406 k?
Second Section
a1 = 4092.2375, a0 = 2.14665×108
? 0 = a 0= 14651.45044 rad/s
The Q value is given by
Q = ? a1
0= 3.5803
The normalized component values are given by
C1 = 1/(2Q) = 0. 1397 F, C2 = 1/(2Q) = 0. 1397 F, R2 = 4Q2 = 51.2743 ?, Ra = 2Q2 = 25.6372 ?, Rb = 2Q2 /(2Q2 - 1)= 1.0406 ?
Application of the magnitude scaling (km = 1000) and frequency scaling (kf = ?0 = 14651.45044) yields
C1 = 0.1397
F k m k× f= 9.5317 nF
C2 = 0.1397
F k m k× f= 9.5317 nF
R2 = 51.2743 ×1000 ? = 51.2743 k?
Ra = 25.6372 ×1000 ? = 25.6372 k?
Rb = 1.0406 ×1000 ? = 1.0406 k?
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