Test and Analysis of a Hyperspectral Microwave Radiometer Intermediate Frequency Module

In this work, an IF (intermediate frequency) module of a hyperspectral microwave radiometer is introduced. The IF module is designed with a 5GSPS sampling-rate ADC and a Virtex-7 FPGA. The module can achieve 512 channels and process all the sampled data in real-time. The test results of this module are given and analyzed, such as linearity, sensitivity, etc. It can be used in various applications of microwave remote sensing.