Designing of IIR Filter using Radix-4 Multiplier by Precharging Technique

Abstract

Infinite impulse response (IIR) filter designs mainly aims on either low area-cost or high speed or reduced power consumption. Infinite Impulse Response filters are the most important element in signal processing and communication. IIR filters can achieve filtering characteristic using less memory and calculations than a similar FIR filter. Multipliers are the basic building block in DSP, microprocessors and other applications. The system's performance is entirely dependent upon the multipliers beca have large area, long latency and consume considerable power hence there is a need to design high speed, low power consumption, regular and less area multipliers. The speed of the multipliers can be increased by reducing the number of partial prod Parallel multipliers are fastest among all multipliers. Booth multipliers are the parallel multipliers that operate on signed operands in two's complement form and have high performance, low power consumption and does not suffer from bad regularity. presents an efficient implementation of high speed parallel multiplier using Radix-4 which further used in the designing of IIR filter. Pre implemented to increase the lifespan of electronic components and increase reliability of the voltage system. Pre-charge is intended to minimize propagation delay time. Pre-charge of the power line voltages in a high voltage DC application is a preliminary mode which limits the inrush current during the power up procedure. In other systems su as vehicle applications, pre-charge will occur with each use of the system, multiple times per day.

POSIT vs. Floating Point in Implementing IIR Notch Filter by Enhancing Radix-4 Modified Booth Multiplier

“…Therefore, it is vital to conduct a precise calculation for the coefficients to generate the correct output. From Equation (12), which represents the equation of the second-order notch filter in the frequency domain, it can be concluded that there are three main coefficients that must be calculated. These coefficients are B1, A1, and A2.…”

“…Ushanandhini et al [12] enhanced the performance of the IIR filter by proposing a new technique to optimize the multiplication process utilizing a Radix-4 multiplier to reduce the number of partial products from n to n/2. They also included the idea of pre-charging, aiming to reduce the delay time, increase the electrical units' lifespan, and enhance the trustworthiness of the system.…”