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In many applications like FIR filters, FFT, signal processing andmeasurements, we are required (~45 dB) or less side lobes amplitudes. However,the problem is usual window based FIR filter design lies in its side lobesamplitudes that are higher than the requirement of application. We propose awindow function, which has better performance like narrower main lobe width,minimum side lobe peak compared to the several commonly used windows. Theproposed window has slightly larger main lobe width of the commonly usedHamming window, while featuring 6.2\ sim 22.62 dB smaller side lobe peak. Theproposed window maintains its maximum side lobe peak about -58.4 \sim -52.6 dBcompared to -35.8 \sim -38.8 dB of Hamming window for M=10~14, while offeringroughly equal main lobe width. Our simulated results also show significantperformance upgrading of the proposed window compared to the Kaiser, Gaussian,and Lanczos windows. The proposed window also shows better performance thanDolph-Chebyshev window. Finally, the example of designed low pass FIR filterconfirms the efficiency of the proposed window.

A Novel Window Function Yielding Suppressed Mainlobe Width and Minimum Sidelobe Peak