基于ARM Cortex-M3微控制器与QDUC的嵌入式激励器设计

A Design of Embedded Exciter Based on ARM Cortex-M3 Microcontroller and QDUC[JZ)][HS)]

摘要:

为解决传统激励器设备体积大、成本高等问题,采用ARM Cortex-M3微控制器与QDUC方案设计了一种嵌入式激励器；系统基于ARM Cortex-M3微控制器、以太网PHY与uIP TCP/IP协议栈构建有线以太网实现与外部上位机之间的数据的收发,使用专用QDUC集成电路芯片对以太网传送来的基带数据进行正交数字上变频,产生任意波形射频激励信号；该方案具有环境适应性强、尺寸小、结构简明、开发难度低、工作稳定可靠、可扩展性强等特点；试验实测系统工作于UDP模式时最大可用基带数据更新速率可达21.5 Mbps,输出射频信号载波频率覆盖DC～400 MHz,满足实际工程需求。

Abstract:

This paper reports a design of embedded exciter based on ARM Cortex-M3 Microcontroller and QDUC, in order to deal with the problem of traditional exciter system, for example it has large volume, higher cost, and so on. The design using the ARM Cortex-M3 microcontroller, Ethernet PHY and uIP TCP/IP protocol stack to build a wired network achieving data communication with the extern host control node. The system can generate arbitrary waveform RF excitation signal, by means of quadrature digital upward frequency conversion employing the baseband data received from the Ethernet using the QDUC ASIC. The design has the features of excellent adaptability to environment, small size, simple structure, easy to design, credible performance, strong scalability. Experiments show that the maximum available baseband data updating rate can be reached in UDP working mode is 21.5Mbps, and the RF signal carrier frequency covers the range of DC to 400MHz, which can meet the requirements of the project.