A New Class of Low Complexity Low-Pass Multiplierless Linear-Phase Special CIC FIR Filters

Milić, Dejan; Pavlović, Vlastimir D.

doi:10.1109/lsp.2014.2343212

Cited by 28 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By cascading non-identical sections of classical CIC filters, it is possible to obtain filters with different characteristics. Some particular cases of new filter classes based on this approach have been considered previously in [7,8]. The choice of filter sections can in general be arbitrary, and not every combination would yield justifiable results.…”

Section: The Proposed Class Of Cic Fir Filter Functionsmentioning

confidence: 99%

“…Some of the attempts to sharpen the filter response and improve the stopband selectivity are described in literature, for example [4][5][6][7][8][9][10][11][12]. Table 1 summarizes the values of normalization constants, ratios of maximal and minimal impulse response coefficients, and stopband attenuation for different filter parameters N and .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of classical CIC and a new class of stopband-improved CIC filters formed by cascading non-identical comb sections

Milić

Pavlović

2016

FACTA U EE

View full text Add to dashboard Cite

In this paper we propose a new class of selective CIC filters in recursive and nonrecursive form. The filters use a modification of CIC concept, which is achieved by applying a set of non-identical comb sections in cascade. We illustrate examples of the proposed filter function and calculate integer coefficients of filter impulse response. Detailed comparison between the proposed selective filter class and classical CIC filters is given. The results show that the stopband selectivity can be improved significantly in comparison with classical CIC filters with the same filter complexity.

show abstract

Section: The Proposed Class Of Cic Fir Filter Functionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of classical CIC and a new class of stopband-improved CIC filters formed by cascading non-identical comb sections

Milić

Pavlović

2016

FACTA U EE

View full text Add to dashboard Cite

show abstract

“…The field programmable gate array (FPGA), which can offer fast real-time processing in parallel, mainly consists of the AND and OR gates, and thus FPGA is very suitable for implementation of a CIC filter containing shifters and adders. This paper presents a novel method to design a polyphase interpolator, which uses the CIC filter [13], [14] to control the time-delay accuracy of the ultrasonic phased array technology. This study gives a thorough analysis of the feedback structure of the CIC filter and provides a comprehensive explanation of the polyphase interpolation principle.…”

Section: Introductionmentioning

confidence: 99%

Design of Polyphase Cascaded Integrator Comb Interpolator Filter for Ultrasonic Phased Array Time Delays

Tang¹,

Liu²,

Ruo-bo³

2017

IJET

View full text Add to dashboard Cite

Time-delay accuracy plays a crucial role in beamforming algorithms of ultrasonic phased array. This paper presents a novel design for a polyphase cascaded integrator comb (CIC) interpolator filter, which can achieve high time-delay accuracy for an ultrasonic phased array focusing-delay system, and the beamforming principle and time-delay algorithm implementation are studied in detail. Firstly, a novel design for the CIC filter is proposed, which improves traditional designs (The data rate increases with the increase of interpolation coefficient, when the direct interpolation mode is used) by using polyphase interpolation. Secondly, according to the principle of interpolating and filtering, CIC polyphase interpolation formulas are deduced by using the exhaustive method, and the formulas can simultaneously implement interpolation and polyphase decomposition with the data rate of each phase same as the original rate. Finally, the algorithm feasibility is validated by simulation analysis and field programmable gate array implementation. Experimental results reveal that a time-delay accuracy of 1 ns at a 100 MHz sampling frequency can be achieved using the improved 10-fold polyphase interpolation CIC filter, and the maximum relative error of the time-delay accuracy is typically only-0.08% for 5 MHz ultrasonic echo waves. This design can be used for many important practical applications for phased array instruments with excellent performance.

show abstract

“…Design of a novel class of selective CIC filter functions based on the classical CIC filters, by spreading the delays in the CIC filter comb stages, is recently shown in [7À9]. In [7,8], novel CIC filter functions in the explicit compact form, as well as their frequency response characteristics and performance improvements over the classical CIC filters, are presented. The novel designed class gives higher insertion losses in the stopband region, and higher selectivity.…”

Section: Introductionmentioning

confidence: 99%

New CIC Filter Architecture: Design, Parametric Analysis and Some Comparisons

Stosic

Milić

Pavlović

2015

IETE Journal of Research

View full text Add to dashboard Cite

A new CIC filter architecture, i.e. CIC (cascaded-integrator-comb) FIR (finite impulse response) filter functions, designed by introducing spreading of the delays in the comb stages is presented here. The design forms of modified CIC filters that approximate simultaneously both magnitude and group delay specifications are given. The benefit of the novel filter class is demonstrated by a few example filter functions and their comparisons with existing classical CIC structures and one technique given in the literature. The effect of the compensation filter on the frequency response (reduction of the passband droop) is also shown. The novel cascaded-filter architecture has valuable benefits: wider passband range, higher insertion loss in stopband, as well as smaller values of integer coefficients of the impulse response.

show abstract

A New Class of Low Complexity Low-Pass Multiplierless Linear-Phase Special CIC FIR Filters

Cited by 28 publications

References 10 publications

Comparison of classical CIC and a new class of stopband-improved CIC filters formed by cascading non-identical comb sections

Comparison of classical CIC and a new class of stopband-improved CIC filters formed by cascading non-identical comb sections

Design of Polyphase Cascaded Integrator Comb Interpolator Filter for Ultrasonic Phased Array Time Delays

New CIC Filter Architecture: Design, Parametric Analysis and Some Comparisons

Contact Info

Product

Resources

About