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Design of a Bandpass Fir Digital Filter - Dissertation Example

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The paper "Design of a Bandpass Fir Digital Filter" discusses that generally, the band pass designed will only receive and process signals that are only within the specified limits. The filter attenuates those that are not incorporated in the restriction…
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Design of a Bandpass Fir Digital Filter
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The design of digital filters especially adaptive or semi-adaptive is the necessity of the hour for SAR applications. The aim of this research work is to design and performance an evaluation of 0.2 – 0.5 Hz Butterworth, Blackman and Chebyshev digital semi-adaptive filters. For this work, XILINX and MATLAB software was used for the design. As part of practical research work, these designs were translated

 Using FPGA hardware SPARTAN-3E kit.  These were optimized, analyzed, compared and evaluated keeping the sampling frequency at 1Hz for 64 orders. These filters designed using the software were tested by passing a sinusoidal test signal of 5 Hz along with noise and the filtered

 Output signals are presented. Signal Noise ratios were evaluated, plotted and comparative analysis was carried out in this paper. The possibility of real-time and low-cost digital filtering emerged when the general purpose of microcomputers was introduced in the 1970s. The earlier designed digital filters had limited precision and speed which limited them to a restricted their application to simple algorithms and low frequency.

In the 1980s, in its historical development DSP Chips which were of higher special cost were introduced (Tomlinson 1991). This contained an on-chip D/A converter that was incorporated and later improvements in their speed and complexity were advanced by ICS. This gave birth to the advanced digital filter design of today ( VolKenberg, 1987). Availability of F.P.G.A series kit helps researchers to take practical designs of semi-adaptive bandpass filters from low to high frequencies. It is on this basis that this project is designed to provide a high factor and high-performance factor in attenuating frequencies which are undesirable for certain applications like the electrocardiogram.
1.2 Objective
The objectives of this project are:
• To inter-grate low pass and high pass digital filters in a substrate known as a bandpass filter.
• To design FIR bandpass that can help to extract the low frequency of between 0.2-0.5 Hz
1.3 Scope of work

The scope of this work is to design and develop a finite impulse response bandpass digital filter. The following lists of objectives must be completed with the following in mind:
1. The scope of this project is making a literature review that will survey the magazine, journal, textbooks, or conference papers.
2. During the literature review, all the information such as the theory and design of a digital filter will be explored.

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