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BWHPDesign

# BWHPDesign - Cs becomes an inductor admittance of the form...

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Steps in Butterworth HP Filter Design Step 1. Generate equivalent NLP specs: 1, A max ( ) ! p ! s , A min " # \$ % & . Step 2. Compute filter order, n. Step 3. Given filter compute, find, look up, n-th order Butterworth transfer function H 3 dBNLP ( s ) . Step 4. Realize H 3 dBNLP ( s ) as a passive circuit. For example there are a variety of 2 nd odn 3 rd order circuits that work. Step 5. Frequency scale the circuit obtained in step 4 by K f 1 = ! c ,min = 1 10 0.1 A max " 1 2 n . This produces a NLP circuit. Step 6. Generate the NHP circuit which should be drawn and labeled. For each capacitor, the admittance
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Unformatted text preview: Cs becomes an inductor admittance of the form Cs ! C s = 1 1 C s ! 1 ˆ Ls , an inductor admittance, i.e., the capacitor become an inductor of value ˆ L = 1 C . Similarly for each inductor impedance of the form Ls ! L s = 1 1 L s ! 1 ˆ Cs , a capacitor impedance, i.e., the inductor becomes a capacitor of value ˆ C = 1 L . Step 7. Frequency and magnitude the NHP circuit off step 6. Here K f 2 = p . K m is chosen according to the instructions in the problem statement. Draw and label your final circuit....
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