| 摘要: |
| 研制了卫星通信中LXI总线收端模块，较好解决了卫星通信中小站分散、技术保障困
难的问题。下变频模块采用4次变频，将射频信号变为21.4 MHz与7.5 MHz中频信号
。数字化仪模块A/D采样，将中频模拟信号转换成中频数字信号。采用FPGA电路辅助的方式
实现IEEE1588协议，实现了30 ns同步。 |
| 关键词: 卫星通信 LXI总线 下变频模块 数字化仪模块 合成仪器 |
| DOI： |
|
| 基金项目: |
|
| Design of LXI Bus Receiver Modules in Satellite Communication |
| ZHANG Liang,HUANG Zhen-yuan,LIANG Jun |
| () |
| Abstract: |
| The receiver modules are developed based on LXI bus so as to preferably s
olve the station problem about decentralization and difficult
technique guarantee in satellite communication.The down frequency module covert
s radio frequency to 21.4
MHz and 7.5 MHz through 4 times frequency conversion. The digitizer modul
e
coverts intermediate and analog signals to intermediate and digital signals thro
ugh A
/D sampling. Realization of IEEE1588 based on FPGA has achieved 30 ns synchr
onization. |
| Key words: satellite communication LXI bus down frequency module digitizer module synth
esized instrument |
