Digital-to-analog converter system and method

摘要: An Interleaved Radio Frequency Digital-to-Analog Converter (RF DAC) suitable for use in cellular base stations and optimized to give both a wide RF tuning range bandwidth is disclosed. The DAC uses two levels of interleaving, the first providing direct conversion path from Base Band (BB) RF, second variable interleaving factor through summation optimize output as function center frequency. Digital Interpolation, including an arbitrary sample rate filter, allows operate possible BB rates fixed ratio As result, spurious outputs are known locations that relatively easy filter out, minimizing frequency planning tasks required complete system design.