An efficient on-chip implementation of reconfigurable continuous time sigma delta ADC for digital beamforming applications

Abstract

SONAR and RADAR makes use of multiple beamforming systems. A novel Onboard Digital Beamforming (DBF) system suitable for various applications is implemented with mixed signal design of Sigma Delta ADC architecture. FPGA is configured as a Reconfigurable On-chip Sigma Delta ADC and analyzed for a multichannel beamforming system with Spartan 6, Virtex 4, and Virtex 6 FPGA. With the architectural variation, major advantages can be seen in SONAR beamforming and similar array processing applications.