A Digital Down Converter (DDC), which is basically used to convert an intermediate frequency (IF) signal to its baseband form, forms an integral part of wireless receivers. The major functional blocks of a DDC constitute a mixer, Numerically Controlled Oscillator (NCO) and an FIR filter chain. In this paper, an area efficient and high speed DDC has been designed and implemented. On comparison of the results with that of the existing methodology, the designed architecture achieves 44.8% area efficiency and 80.7% improvement in speed.

A Digital Down Converter (DDC) forms an integral part of wireless receivers. The major functional blocks of a DDC constitute a mixer, Numerically Controlled Oscillator (NCO) and an FIR filter chain. In this paper, an area efficient DDC has been designed and implemented. The designed architecture achieves 44.8% area efficiency, on comparing it with that of the existing methodology. The lesser the area required, the lesser will be the power consumption, thus making it environmental friendly.