Rejecting harmonic interference in TWACS using IIR notch filter based on all-pass filter

Shi Ping Zhang; Yong Ping Zhao; Rui Ye Liu; De Sheng Li

Rejecting harmonic interference in TWACS using IIR notch filter based on all-pass filter

Shi Ping Zhang^*
, Yong Ping Zhao
, Rui Ye Liu
, De Sheng Li

^*Corresponding author for this work

School of Instrumentation Science and Engineering

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A novel method using an IIR notch filter to eliminate harmonic interference is proposed in terms of the signal character in TWACS. The notch filter is based on an all-pass filter and has a very low sensitivity at low frequencies due to the mirror-image symmetry relation between the numerator and denomimator palynomials of the all-pass filter. And the notch filter can be implemented by an efficient lattice structure that gets the computation simple. The basic principle and design technique of the filter are discussed in detail. A design example indicates that the notch frequency shift caused by the quantization effect of this method is much less than that of cascade method. Practical experiment and simulation show that The 3^rd, 5^th harmonic are suppressed effectively and the ability of detecting the signal of TWACS is improved greatly.

Original language	English
Pages (from-to)	35-38+61
Journal	Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume	23
Issue number	5
State	Published - May 2003

Keywords

All-pass filter
Harmonic
Notch filter
Sensitivity
TWACS

Cite this

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title = "Rejecting harmonic interference in TWACS using IIR notch filter based on all-pass filter",

abstract = "A novel method using an IIR notch filter to eliminate harmonic interference is proposed in terms of the signal character in TWACS. The notch filter is based on an all-pass filter and has a very low sensitivity at low frequencies due to the mirror-image symmetry relation between the numerator and denomimator palynomials of the all-pass filter. And the notch filter can be implemented by an efficient lattice structure that gets the computation simple. The basic principle and design technique of the filter are discussed in detail. A design example indicates that the notch frequency shift caused by the quantization effect of this method is much less than that of cascade method. Practical experiment and simulation show that The 3rd, 5th harmonic are suppressed effectively and the ability of detecting the signal of TWACS is improved greatly.",

keywords = "All-pass filter, Harmonic, Notch filter, Sensitivity, TWACS",

author = "Zhang, \{Shi Ping\} and Zhao, \{Yong Ping\} and Liu, \{Rui Ye\} and Li, \{De Sheng\}",

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journal = "Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering",

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publisher = "Chinese Society for Electrical Engineering",

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TY - JOUR

T1 - Rejecting harmonic interference in TWACS using IIR notch filter based on all-pass filter

AU - Zhang, Shi Ping

AU - Zhao, Yong Ping

AU - Liu, Rui Ye

AU - Li, De Sheng

PY - 2003/5

Y1 - 2003/5

N2 - A novel method using an IIR notch filter to eliminate harmonic interference is proposed in terms of the signal character in TWACS. The notch filter is based on an all-pass filter and has a very low sensitivity at low frequencies due to the mirror-image symmetry relation between the numerator and denomimator palynomials of the all-pass filter. And the notch filter can be implemented by an efficient lattice structure that gets the computation simple. The basic principle and design technique of the filter are discussed in detail. A design example indicates that the notch frequency shift caused by the quantization effect of this method is much less than that of cascade method. Practical experiment and simulation show that The 3rd, 5th harmonic are suppressed effectively and the ability of detecting the signal of TWACS is improved greatly.

AB - A novel method using an IIR notch filter to eliminate harmonic interference is proposed in terms of the signal character in TWACS. The notch filter is based on an all-pass filter and has a very low sensitivity at low frequencies due to the mirror-image symmetry relation between the numerator and denomimator palynomials of the all-pass filter. And the notch filter can be implemented by an efficient lattice structure that gets the computation simple. The basic principle and design technique of the filter are discussed in detail. A design example indicates that the notch frequency shift caused by the quantization effect of this method is much less than that of cascade method. Practical experiment and simulation show that The 3rd, 5th harmonic are suppressed effectively and the ability of detecting the signal of TWACS is improved greatly.

KW - All-pass filter

KW - Harmonic

KW - Notch filter

KW - Sensitivity

KW - TWACS

UR - https://www.scopus.com/pages/publications/0042328088

M3 - 文章

AN - SCOPUS:0042328088

SN - 0258-8013

VL - 23

SP - 35-38+61

JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

IS - 5

ER -

Rejecting harmonic interference in TWACS using IIR notch filter based on all-pass filter

Abstract

Keywords

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