A hybrid window function to design finite impulse response low pass filter with an improved frequency response

摘要

In large amount applications appreciate Finite Impulse Response filters, Fast Fourier Transform, Signal Processing Technique and measurements, forced upon ~45dB or ultimately less side lobe magnitudes. However, the setback is prompt in window based FIR filter design lies in its side lobe magnitude that are higher than the specification of application. The expected hybrid window Technique has transcend attitude like minimum side lobe peak and higher side lobe peak attenuation compared to the several generally used windows with main lobe width(-3dB) of 0.11328. The proposed window has reliant side lobe attenuation of -72.7 dB and peak side lobe amplitude of -98 dB for the filter term of N=35. The studied results also unmask significant performance upgrading of the coming window compared to Rectangular, Hanning, Hamming, Blackman and Kaiser Windows. Finally, the approaching window is applied to design Low pass FIR filter prove the simplicity of the window.