Optimal Modelling of (1 + α) Order Butterworth Filter under the CFE Framework
Abstract
:1. Introduction
2. Proposed Techniques
2.1. First Method: Constrained Optimization
2.2. Second Method: Pole-Zero Optimization
3. Simulation Results and Discussions
3.1. Modelling Performance
3.2. Determination of Generalized Expressions for Model Coefficients
3.3. Comparison with the Literature
3.4. Circuit Realization
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Appendix A
0.01 | [0.0072, 1.2670, 10.3151, 0.0077, 1.3214, 11.6763, 10.3050] |
0.02 | [0.0086, 1.3930, 10.0776, 0.0098, 1.5038, 11.6360, 10.0680] |
0.03 | [0.0086, 1.3867, 10.0211, 0.0104, 1.5499, 11.6526, 10.0071] |
0.04 | [0.0084, 1.3664, 9.9621, 0.0108, 1.5811, 11.6519, 9.9438] |
0.05 | [0.0081, 1.3449, 9.9065, 0.0113, 1.6111, 11.6522, 9.8840] |
0.06 | [0.0079, 1.3293, 9.9140, 0.0117, 1.6487, 11.7239, 9.8873] |
0.07 | [0.0077, 1.3046, 9.8491, 0.0121, 1.6751, 11.7098, 9.8185] |
0.08 | [0.0074, 1.2770, 9.7623, 0.0125, 1.6974, 11.6682, 9.7280] |
0.09 | [0.0072, 1.2583, 9.7403, 0.0129, 1.7314, 11.7031, 9.7021] |
0.10 | [0.0071, 1.2651, 9.9167, 0.0137, 1.8020, 11.9774, 9.8738] |
0.11 | [0.0071, 1.2740, 10.1144, 0.0145, 1.8786, 12.2794, 10.0669] |
0.12 | [0.0068, 1.2489, 10.0388, 0.0149, 1.9060, 12.2504, 9.9879] |
0.13 | [0.0066, 1.2194, 9.9298, 0.0153, 1.9264, 12.1786, 9.8759] |
0.14 | [0.0064, 1.2105, 9.9830, 0.0160, 1.9794, 12.3055, 9.9252] |
0.15 | [0.0063, 1.1985, 10.0109, 0.0167, 2.0285, 12.4014, 9.9494] |
0.16 | [0.0060, 1.1702, 9.8988, 0.0171, 2.0498, 12.3230, 9.8347] |
0.17 | [0.0059, 1.1709, 10.0313, 0.0180, 2.1227, 12.5488, 9.9630] |
0.18 | [0.0062, 1.2422, 10.7786, 0.0201, 2.3308, 13.5487, 10.7018] |
0.19 | [0.0057, 1.1634, 10.2238, 0.0198, 2.2591, 12.9125, 10.1478] |
0.20 | [0.0055, 1.1475, 10.2137, 0.0205, 2.3061, 12.9604, 10.1346] |
0.21 | [0.0054, 1.1416, 10.2904, 0.0214, 2.3740, 13.1183, 10.2077] |
0.22 | [0.0054, 1.1511, 10.5089, 0.0227, 2.4772, 13.4582, 10.4215] |
0.23 | [0.0052, 1.1300, 10.4494, 0.0234, 2.5166, 13.4424, 10.3596] |
0.24 | [0.0051, 1.1250, 10.5364, 0.0245, 2.5926, 13.6146, 10.4430] |
0.25 | [0.0049, 1.1100, 10.5293, 0.0254, 2.6470, 13.6649, 10.4333] |
0.26 | [0.0047, 1.0760, 10.3376, 0.0259, 2.6549, 13.4739, 10.2408] |
0.27 | [0.0047, 1.0922, 10.6276, 0.0276, 2.7884, 13.9107, 10.5257] |
0.28 | [0.0046, 1.0920, 10.7638, 0.0290, 2.8848, 14.1476, 10.6580] |
0.29 | [0.0044, 1.0662, 10.6449, 0.0298, 2.9143, 14.0485, 10.5380] |
0.30 | [0.0065, 1.5869, 16.0490, 0.0466, 4.4880, 21.2656, 15.8844] |
0.31 | [0.0053, 1.3280, 13.6042, 0.0410, 3.8857, 18.0972, 13.4620] |
0.32 | [0.0057, 1.4319, 14.8591, 0.0464, 4.3348, 19.8429, 14.7010] |
0.33 | [0.0057, 1.4722, 15.4761, 0.0501, 4.6110, 20.7449, 15.3086] |
0.34 | [0.0067, 1.7562, 18.7022, 0.0629, 5.6907, 25.1622, 18.4966] |
0.35 | [0.0051, 1.3692, 14.7721, 0.0515, 4.5901, 19.9465, 14.6073] |
0.36 | [0.0051, 1.3869, 15.1596, 0.0548, 4.8102, 20.5423, 14.9883] |
0.37 | [0.0046, 1.2682, 14.0445, 0.0526, 4.5505, 19.0971, 13.8838] |
0.38 | [0.0047, 1.3204, 14.8156, 0.0576, 4.9014, 20.2135, 14.6441] |
0.39 | [0.0046, 1.3156, 14.9573, 0.0603, 5.0522, 20.4739, 14.7823] |
0.40 | [0.0041, 1.2142, 13.9871, 0.0584, 4.8235, 19.2073, 13.8220] |
0.41 | [0.0042, 1.2402, 14.4772, 0.0627, 5.0969, 19.9423, 14.3048] |
0.42 | [0.0036, 1.1025, 13.0409, 0.0585, 4.6868, 18.0183, 12.8844] |
0.43 | [0.0039, 1.2008, 14.3948, 0.0670, 5.2809, 19.9476, 14.2208] |
0.44 | [0.0036, 1.1534, 14.0127, 0.0676, 5.2474, 19.4736, 13.8424] |
0.45 | [0.0051, 1.6556, 20.3845, 0.1019, 7.7912, 28.4071, 20.1355] |
0.46 | [0.0020, 0.6436, 8.0327, 0.0416, 3.1334, 11.2242, 7.9341] |
0.47 | [0.0029, 0.9848, 12.4571, 0.0669, 4.9591, 17.4517, 12.3038] |
0.48 | [0.0034, 1.1617, 14.8945, 0.0829, 6.0509, 20.9188, 14.7107] |
0.49 | [0.0032, 1.1101, 14.4287, 0.0832, 5.9814, 20.3136, 14.2503] |
0.50 | [0.0031, 1.1026, 14.5279, 0.0868, 6.1452, 20.5010, 14.3482] |
0.51 | [0.0030, 1.0828, 14.4643, 0.0896, 6.2425, 20.4570, 14.2853] |
0.52 | [0.0028, 1.0534, 14.2677, 0.0915, 6.2821, 20.2225, 14.0913] |
0.53 | [0.0026, 0.9935, 13.6444, 0.0907, 6.1288, 19.3792, 13.4760] |
0.54 | [0.0027, 1.0471, 14.5817, 0.1004, 6.6815, 20.7515, 14.4021] |
0.55 | [0.0029, 1.1801, 16.6642, 0.1189, 7.7887, 23.7603, 16.4598] |
0.56 | [0.0027, 1.1208, 16.0508, 0.1187, 7.6517, 22.9271, 15.8547] |
0.57 | [0.0027, 1.1153, 16.1996, 0.1241, 7.8763, 23.1796, 16.0027] |
0.58 | [0.0024, 1.0352, 15.2501, 0.1210, 7.5616, 21.8567, 15.0658] |
0.59 | [0.0027, 1.2057, 18.0170, 0.1481, 9.1100, 25.8624, 17.8008] |
0.60 | [0.0043, 1.9166, 29.0515, 0.2473, 14.9784, 41.7631, 28.7055] |
0.61 | [0.0045, 2.0864, 32.0832, 0.2829, 16.8658, 46.1853, 31.7044] |
0.62 | [0.0039, 1.8406, 28.7167, 0.2622, 15.3909, 41.3930, 28.3809] |
0.63 | [0.0041, 1.9664, 31.1286, 0.2944, 17.0081, 44.9245, 30.7686] |
0.64 | [0.0032, 1.5892, 25.5274, 0.2501, 14.2180, 36.8830, 25.2355] |
0.65 | [0.0031, 1.5686, 25.5689, 0.2594, 14.5160, 36.9823, 25.2803] |
0.66 | [0.0029, 1.5267, 25.2565, 0.2653, 14.6143, 36.5664, 24.9753] |
0.67 | [0.0030, 1.6265, 27.3106, 0.2971, 16.1054, 39.5763, 27.0112] |
0.68 | [0.0027, 1.4764, 25.1627, 0.2835, 15.1217, 36.4942, 24.8913] |
0.69 | [0.0025, 1.4347, 24.8223, 0.2896, 15.2004, 36.0278, 24.5592] |
0.70 | [0.0031, 1.8126, 31.8372, 0.3846, 19.8646, 46.2412, 31.5061] |
0.71 | [0.0023, 1.4146, 25.2277, 0.3156, 16.0369, 36.6640, 24.9706] |
0.72 | [0.0022, 1.3841, 25.0635, 0.3246, 16.2311, 36.4453, 24.8135] |
0.73 | [0.0025, 1.6088, 29.5825, 0.3967, 19.5149, 43.0370, 29.2942] |
0.74 | [0.0021, 1.3737, 25.6544, 0.3562, 17.2378, 37.3378, 25.4105] |
0.75 | [0.0020, 1.3367, 25.3552, 0.3645, 17.3517, 36.9153, 25.1205] |
0.76 | [0.0020, 1.4175, 27.3108, 0.4065, 19.0337, 39.7740, 27.0652] |
0.77 | [0.0017, 1.2282, 24.0392, 0.3704, 17.0603, 35.0174, 23.8295] |
0.78 | [0.0017, 1.3039, 25.9285, 0.4136, 18.7362, 37.7757, 25.7095] |
0.79 | [0.0015, 1.2049, 24.3452, 0.4021, 17.9110, 35.4732, 24.1467] |
0.80 | [0.0015, 1.2300, 25.2545, 0.4318, 18.9149, 36.8003, 25.0561] |
0.81 | [0.0013, 1.0970, 22.8910, 0.4052, 17.4522, 33.3566, 22.7183] |
0.82 | [0.0012, 1.0436, 22.1344, 0.4056, 17.1764, 32.2528, 21.9744] |
0.83 | [0.0011, 1.0048, 21.6630, 0.4109, 17.1089, 31.5632, 21.5136] |
0.84 | [0.0015, 1.4195, 31.1132, 0.6109, 25.0061, 45.3263, 30.9092] |
0.85 | [0.0010, 0.9745, 21.7182, 0.4415, 17.7615, 31.6342, 21.5833] |
0.86 | [0.0010, 0.9937, 22.5204, 0.4738, 18.7388, 32.7957, 22.3885] |
0.87 | [0.0009, 0.9506, 21.9110, 0.4772, 18.5479, 31.9003, 21.7907] |
0.88 | [0.0007, 0.8297, 19.4536, 0.4386, 16.7516, 28.3148, 19.3542] |
0.89 | [0.0007, 0.8079, 19.2700, 0.4497, 16.8778, 28.0388, 19.1789] |
0.90 | [0.0005, 0.6690, 16.2360, 0.3922, 14.4626, 23.6161, 16.1656] |
0.91 | [0.0004, 0.6131, 15.1406, 0.3785, 13.7151, 22.0149, 15.0810] |
0.92 | [0.0010, 1.5090, 37.9257, 0.9815, 34.9327, 55.1237, 37.7919] |
0.93 | [0.0004, 0.5827, 14.9106, 0.3994, 13.9631, 21.6633, 14.8642] |
0.94 | [0.0015, 2.5610, 66.7134, 1.8497, 63.5111, 96.8854, 66.5341] |
0.95 | [0.0002, 0.4555, 12.0859, 0.3468, 11.6951, 17.5441, 12.0586] |
0.96 | [0.0002, 0.4357, 11.7790, 0.3498, 11.5845, 17.0910, 11.7576] |
0.97 | [0.0002, 0.3917, 10.7896, 0.3316, 10.7837, 15.6482, 10.7748] |
0.98 | [0.0001, 0.3434, 9.6451, 0.3067, 9.7951, 13.9818, 9.6362] |
0.99 | [0.0001, 0.2963, 8.5055, 0.2795, 8.7751, 12.3236, 8.5015] |
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j | normr | |
---|---|---|
1 | [−3296.4822 20,463.0535 −55,956.3172 88,645.9592 −90,004.6700 61,177.1067 −28,220.1541 8748.7235 −1744.8383 188.7039 3.8243 −5.9044 0.9941] | 0.0121 |
2 | [5,360,719.0307 −33,661,093.4010 93,344,686.5258 −150,459,613.8980 156,126,064.8060 −109,126,929.1226 52,244,368.4342 −17,082,989.8734 3,738,541.4525 −526,969.6843 45,711.4164 −2677.7164 184.9341] | 5.5319 |
3 | [98,181,518.8867 −616,171,022.1666 1,707,614,135.6472 −2,750,396,416.1026 2,851,379,332.7390 −1,990,736,903.7900 951,625,592.6166 −310,495,794.2945 67,704,359.2792 −9,459,845.1519 791,119.5979 −37,614.9184 1602.1394] | 102.8524 |
4 | [5,655,736.7928 −35,483,357.2034 98,304,655.4191 −158,285,807.3359 164,049,687.1309 −114,509,031.6440 54,735,501.9212 −17,864,163.7748 3,898,895.3782 −545,744.8998 45,696.4819 −2222.8002 187.4012] | 5.7409 |
5 | [104,678,306.0497 −656,934,043.5111 1,820,552,445.4560 −2,932,252,271.2739 3,039,861,753.9281 −2,122,300,914.9943 1,014,512,284.2268 −331,018,580.3175 72,181,180.2320 −10,084,151.3121 842,086.1104 −39,808.1889 1793.5872] | 109.4323 |
6 | [97,902,861.1308 −614,425,103.7567 1,702,785,070.0630 −2,742,636,550.9125 2,843,357,267.3012 −1,985,155,645.3550 948,969,406.0082 −309,634,398.9421 67,518,446.8187 −9,434,553.4453 789,240.7331 −37,575.9960 1600.7331] | 102.5444 |
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Mahata, S.; Kar, R.; Mandal, D. Optimal Modelling of (1 + α) Order Butterworth Filter under the CFE Framework. Fractal Fract. 2020, 4, 55. https://0-doi-org.brum.beds.ac.uk/10.3390/fractalfract4040055
Mahata S, Kar R, Mandal D. Optimal Modelling of (1 + α) Order Butterworth Filter under the CFE Framework. Fractal and Fractional. 2020; 4(4):55. https://0-doi-org.brum.beds.ac.uk/10.3390/fractalfract4040055
Chicago/Turabian StyleMahata, Shibendu, Rajib Kar, and Durbadal Mandal. 2020. "Optimal Modelling of (1 + α) Order Butterworth Filter under the CFE Framework" Fractal and Fractional 4, no. 4: 55. https://0-doi-org.brum.beds.ac.uk/10.3390/fractalfract4040055