Universal wideband digital acquisition system based on radio frequency direct sampling
By integrating an RF-ADC/DAC and an FPGA into a direct RF sampling unit, and combining the AXI-stream bus and FPGA reconfigurable technology, the problems of high power consumption, large size, and high logic overhead of traditional discrete AD/DA chip architectures are solved. This achieves high integration, low power consumption, and flexible algorithm deployment, improving the accuracy and flexibility of the system.
CN122132348APending Publication Date: 2026-06-0210TH RES INST OF CETC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 10TH RES INST OF CETC
- Filing Date
- 2026-01-22
- Publication Date
- 2026-06-02
Smart Images
Figure CN122132348A_ABST
Abstract
This invention provides a general-purpose broadband digital acquisition system based on direct RF acquisition. The system employs a highly integrated direct RF acquisition unit, which integrates an ADC acquisition component, a DAC acquisition component, and an FPGA acquisition and processing component. The ADC / DAC is connected to the FPGA via an AXI-stream bus, eliminating the need for an external high-speed JESD204B interface, effectively reducing system power consumption and logic overhead. Architecturally, the system adopts a dual-core architecture of the direct RF acquisition unit and the ZYNQ algorithm processing unit. The FPGA acquisition and processing component is divided into a static area and a dynamic area using partially reconfigurable technology. The static area handles basic data processing, while the dynamic area communicates with the ZYNQ unit via an EMIF interface, executing latency-sensitive and latency-insensitive algorithms respectively. This allows for flexible, hierarchical deployment of algorithms, significantly improving the platform's versatility and integration.
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