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介绍了在DVB-S接收机中使用的QPSK解调高频头的方案,分析了单片高频头芯片STV0399的结构和工作原理,并介绍了软件的控制流程。
The scheme of QPSK demodulation tuner used in DVB-S receiver is introduced. The structure and working principle of monolithic tuner chip STV0399 are analyzed and the software control flow is introduced.