Research Article
Analysis and Design of Digital IIR Integrators and Differentiators Using Minimax and Pole, Zero, and Constant Optimization Methods
Table 1
Coefficients and maximum PARE for different frequency ranges of second-order integrator.
| S. no. | Frequency range (radians/second) | | | | | | Maximum PARE
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| 1 | 0.01 ≤ ω ≤ π | +0.8580 | +0.6010 | +0.0545 | −0.4798 | −0.5176 | 1.80 | 2 | 0.02 ≤ ω ≤ 0.99π | +0.8599 | +0.6030 | +0.0582 | −0.4772 | −0.5100 | 1.50 | 3 | 0 ≤ ω ≤ 0.98π | +0.8631 | +0.5897 | +0.0530 | −0.4982 | −0.5034 | 1.00 | 4 | 0 ≤ ω ≤ 0.97π | +0.8657 | +0.5918 | +0.0534 | −0.4975 | −0.5025 | 0.70 | 5 | 0.01 ≤ ≤ 0.96π | +0.8650 | +0.5993 | +0.0539 | −0.4834 | −0.5145 | 0.37 | 6 | 0.01 ≤ ω ≤ 0.95π | +0.8640 | +0.5900 | +0.0544 | −0.4940 | −0.5017 | 0.45 | 7 | 0.01 ≤ ω ≤ 0.94π | +0.8660 | +0.5920 | +0.0526 | −0.4890 | −0.5051 | 0.50 | 8 | 0.02 ≤ ω ≤ 0.93π | +0.8676 | +0.5937 | +0.0531 | −0.4863 | −0.5034 | 0.75 | 9 | 0.02 ≤ ω ≤ 0.92π | +0.8634 | +0.5920 | +0.0519 | −0.4854 | −0.5042 | 0.40 | 10 | 0.03 ≤ ω ≤ 0.91π | +0.8615 | +0.5991 | +0.0538 | −0.4736 | −0.5139 | 0.44 | 11 | 0.03 ≤ ω ≤ 0.90π | +0.8598 | +0.5981 | +0.0543 | −0.4721 | −0.5121 | 0.51 |
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