Keynote: Calibrating RF/Microwave Front Ends in Multichannel Receiver and Transmitter Systems

Collocated hardened digital signal processing (DSP) blocks, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) on a single integrated circuit (IC) enable simpler, more efficient systems by reducing the amount of soft blocks historically-residing on power-hungry field-programmable gate arrays (FPGAs). This presentation provides experimental results showing how the use of these hardened DSP blocks across multiple digitizer ICs successfully achieves transmit (Tx) and receive (Rx) channel-to-channel phase and amplitude calibrations across the full instantaneous bandwidth used for the system. Also shown is that these hardened DSP blocks are capable of correcting RF/Microwave anomalies in the front-end networks attached to each transmitter and receiver, thereby simplifying the system’s layout.