Analogue to digital converter design for software defined radio – an optimised approach Online publication date: Sat, 29-Nov-2014
by K.V. Shriram, K. Venkateshwaran, V. Subashri, V. Vaithiyanathan
International Journal of Internet Technology and Secured Transactions (IJITST), Vol. 3, No. 2, 2011
Abstract: Software defined radio (SDR) is a potential low cost future-proofed solution to the growing number of incompatible wireless standards operating in different frequency bands and different geographical zones. This paper is aimed at designing an 8 bit analogue to digital converter. An analogue-to-digital converter is an electronic integrated circuit, which converts an input analogue voltage to a digital number. The digital output may be obtained using different coding schemes. Based on the response, ADC is classified into linear and non-linear ADCs. Among the various types of ADC our contribution towards this project is the design of direct conversion ADC (flash ADC). The above mentioned ADC type has been implemented using CMOS logic style in Cadence IC 5.1.41 tool and the results have been compared with SAR ADC type in terms of speed and area efficiency. The individual modules are designed using 1.2 micron and 0.25 micron TSMC process technologies.
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