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FPGA design of a fourth order elliptic IIR band-pass filter using LabVIEW
(DergiPark, 2021) Tatar, Guner; Çiçek, İhsan; Bayar, Salih
Infinite impulse response filters are often used to meet the demand of modern electrical engineering applications such as image processing, digital signal processing and telecommunications because of the high selectivity and computational efficiency. In missioncritical real-time applications, computational latency is usually intolerable. High-speed processing of data and the coefficients require a digital signal processor or an FPGA instead of a general-purpose microprocessor. In the last two decades, FPGAs have been applied to many fields of signal processing due to parallelism determined scalable performance and run-time reconfigurability. This study presents a LabVIEW driven FPGA hardware design of a fourth-order discrete-time IIR elliptic band-pass filter. The designed filter has 2 kHz low and 2.5 kHz high cut-off frequencies with 1dB pass-band ripple and 80dB stop-band attenuation. The expected behavior of the designed filter has been confirmed by the functional simulation of the developed VHDL model. LabVIEW FPGA resource estimation reports a compact footprint for the proposed design.