On design of a novel class of selective CIC FIR filter functions with improved response

Stosic, Biljana; Pavlović, Vlastimir D.

doi:10.1016/j.aeue.2014.02.013

Cited by 18 publications

(2 citation statements)

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“…After photoelectric conversion and signal amplification, an analog-to-digital conversion occurs. The first harmonic WMS (WMS-1f) signal and the second harmonic WMS (WMS-2f) signal are extracted by the DLIA [7] and the concentration is derived based the normalized WMS-2f. The low-pass filter (LPF) in the DLIA has the function of filtering out the high frequency components in the signal, which determined the denoising performance of the DLIA [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

Dong

2019

Front. Phys.

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A near-infrared trace CO 2 detection system was experimentally demonstrated based on an 1,580 nm distributed feedback (DFB) laser using a cascaded integrator comb (CIC) filter-assisted wavelength modulation spectroscopy (WMS) technique and a digital lock-in amplifier (DLIA). An 1,580 nm DFB laser emitting at 1,579.1 nm was selected as the light source. A multi-pass cell (MPGC with a 30 m-long path) was adopted as the absorption cell. A DLIA was developed to extract the second harmonic WMS (WMS-2f) signal. The cascade-integrated comb filter (CICF) and the finite impulse response (FIR) low-pass filter (LPF) were combined in the DLIA to improve the performance of DLIA. Three methods of PD (Peak detection), LIA, CICF-assisted WMS, and DLIA were adopted to detect the CO 2 concentration levels and the anti-interference performance of each detection method was analyzed. The experimental results indicated that compared with the peak detection and the lock-in amplifier method of the CICF-assisted WMS and DLIA developed in this manuscript had the highest linearity and precision. When the integration time is 3s, the LOD of the system was predicted to be 0.0812 ppm. Due to the advantages of high sensitivity, a low detection limit and a rapid response, the CO 2 detection system reported in this manuscript has a good application prospect in the area of oilfield associated gases detection.

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Section: Introductionmentioning

confidence: 99%

A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

Dong

2019

Front. Phys.

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“…During this period of time, CIC filters have received considerable attention. Several kinds of structures have been proposed in the literature to achieve filter response improvements, such as the adding of compensation filters [2][3][4] or the design of new filter functions [5][6][7][8][9].…”

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confidence: 99%

Design of new selective CIC filter functions with passband‐droop compensation

Stosic

Pavlović

2016

Electron. lett.

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he main aim of this reported work was to design new selective cascadedintegrator-comb (CIC) filter functions. The theoretical design equations and impulse response coefficients, as well as the frequency response characteristics of the novel filter functions are presented. Compared with existing filter functions in the literature, the proposed functions not only have improved insertion loss but also a multiplierless architecture, better passband characteristics and lower impulse response coefficients.

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Design of Digital Filters for the Contactless Conductivity Detection of Micro-fluidic Electrophoresis Chip Based on CIC and FIR

Liao

Hao

Zhou

et al. 2017

Advances in Intelligent Systems and Computing

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On design of a novel class of selective CIC FIR filter functions with improved response

Cited by 18 publications

References 18 publications

A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

Design of new selective CIC filter functions with passband‐droop compensation

Design of Digital Filters for the Contactless Conductivity Detection of Micro-fluidic Electrophoresis Chip Based on CIC and FIR

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