Design of a SoC for Intermediate Frequency Digital Receiver

With the development of CMOS technology, the integration and miniaturization have become the trend of electronic devices. This paper proposes a scheme of system on chip (SoC) that realizes the monolithic integration of the intermediate frequency digital receiver based on CMOS technology, which integrates RF receiver front-end, A/D conversion, digital down conversion and baseband processing together. The chip is manufactured by 0.18um CMOS technology, and the area is 7x8mm(2). The test of chip has completed within the RF reception signal range of 0.5 similar to 4GHz, The system noise of RF receiving module is below 10dB, the image rejection is greater than 40dB, the SFDR of ADC can reach to 80.22 dB, and the maximum operating frequency of DDC and CPU can arrive up to 100MHz. the test results can meet the requirements of the project evaluation index. The chip has great potential applications in the miniaturization, integration and high reliability of the electronic systems.