IIR notch filter design with modified pole-zero placement algorithm

Yimman, Surapun; Hinjit, W.; Sriboonsong, Surapol; Puangpool, M.; Dejhan, Kobchai

doi:10.1109/isspit.2003.1341247

Cited by 8 publications

(14 citation statements)

References 2 publications

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“…However, the pole-zero placement [6,8] has constrains on the asymmetric and uncontrollable gain. The rectification for this problem is to find the proper pole positions to make symmetric gain with suitable gain level possible [3,4]. The application of notch filter is to remove some particular frequency.…”

Section: Theoriesmentioning

confidence: 99%

“…However, cascading IIR single notch filter before changing pole position may create uncontrollable pass-band gains of magnitude response. However, the cascading of IIR single notch filter after changing the pole position, the gain of magnitude response at some frequencies between notch frequencies may not be controllable [5].…”

Section: Theoriesmentioning

confidence: 99%

“…1 shows the angle of poles and zeros at the same positions while the magnitude response in Fig. 2 Therefore, it is necessary to change the pole positions to the more appropriated positions while calculating the coefficients to control the gain as shown in (3) to (5). The magnitude responses after the modification of pole positions will become as shown in Fig.…”

Section: Theoriesmentioning

confidence: 99%

See 2 more Smart Citations

IIR Multiple Notch Filters Design with Optimum Pole Position

Yimman

Praesomboon

Soonthuk

et al. 2006

2006 International Symposium on Communications and Information Technologies

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The following article introduces the new design and implementation of IIR multiple notch filters by the application of suitable pole placement technique. The initial step is to design the two IIR single notch filters with difference notch frequency to find suitable pole that can control the pass-band gain at 3 frequencies such as DC, yT and frequency between the notch frequency. After that, connect the IIR single notch filters with difference notch frequency in cascade to create IIR multiple notch filters which can control the pass-band gains at DC and yz frequency especially the frequency between the notch frequencies.

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Section: Theoriesmentioning

confidence: 99%

Section: Theoriesmentioning

confidence: 99%

Section: Theoriesmentioning

confidence: 99%

See 1 more Smart Citation

IIR Multiple Notch Filters Design with Optimum Pole Position

Yimman

Praesomboon

Soonthuk

et al. 2006

2006 International Symposium on Communications and Information Technologies

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“…The frequency response of IIR notch filter can be described as shown in (3) while the transfer function of the IIR notch filter can be described as shown in (4) [2][3][4].…”

Section: A Iir Notch Filtermentioning

confidence: 99%

“…Pole-zero plot of the IIR notch filter from the previous design [Magnitude responses of IIR notch filter from the previous Design[4] Magnitude responses of the IIR notch filter after changing the pole positions and controlling the gain[4] B. All-pass FilterThe transfer function of the all-pass filter can be described as equation shown in (8)[5][6].…”

mentioning

confidence: 99%

Two-Pole Band-pass Filter Based on All-pass Filter

Yimman¹,

Praesomboon²,

Klunium³

et al.

2005 5th International Conference on Information Communications &Amp; Signal Processing

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This paper proposes the new two-pole band-pass filter design principle for the all-pass filter and notch filter by applying the least square. The first step is to design notch filter by using pole-zero placement and then modify pole positions to control pass-band filter gain to ensure the symmetry with the maximum gain at the target level. After that, there is the design of all-pass filter with pole at the same positions as the notch filters to make the negative cascade with the designed notch filter to get the transfer function with band-pass filter magnitude response. The results from the experiments on MATLAB have shown the twopole band-pass filter of the new design with the accurate and symmetric gain.

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