I have posted this question several times and they are not using the LTspice software that makes up most of this questio

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answerhappygod
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I have posted this question several times and they are not using the LTspice software that makes up most of this questio

Post by answerhappygod »

I have posted this question several times and they are not using the LTspice software that makes up most of this question. Please use the LTspice software to simulate.
The pictures at the end are the answers I have recieved every single time which is not fully complete.
1. Design a Butterworth lowpass filter that has no more than 2 dB of loss for frequencies below 2 kHz and at least 30 dB of attenuation for frequencies above 8 kHz. Your
final result should be a circuit with reasonable component values.
2. Use LTSpice to simulate the frequency response of your circuit from problem 1) above. Verify that it has all the Butterworth characteristics (0 dB DC gain, monotonic
response, 3-dB frequency is correct). Place cursors on the gain plot at the corner frequencies to verify that it meets the specifications given.
3. Repeat problems 1) and 2) above for a filter with no more than 1.5 dB of loss below 2 kHz and at least 30 dB of attenuation above 5 kHz.
Given, Amin = 2dB min Converting in normal gain = 2dB = 20 lag Am Amin = 1.258 we know. Amin=√1²+² E = √Amin - 12 E = √(1-258)²-1 Given. Amax. 30dB Bod B= 20 lag Amax Amax B1.622 for Butterworth filter Ho H (jw) www. 2n JITELES given Fs = 8kHz, <= 0.763 FR = 2kH₂

0541(43²h 1.258 31.622 (0.039)² 1 - - 1 F (0.039)2 (4)=1209.726 люд Apply log on both side. n=2.500 | nă 3 we know H (jw) woll now M Н. = 1+0.763)² (227 1 =J=-=-= 1+ (0.763)² (2) ² 52 kH₂ 1 1+0.541*(4)²n

Wo = 13745, 107 rad /sec - wo Jet R=8 KR RC CEL C <= 9.09 hf. gko ww RO 8x10³x13745-107 Vin A C=9.09nf HK RE R=&K FC=9.09 nf = 9.09 nf Viele R=8k TC=9.09hf Vout
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