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实行中波同步广播,是提高中波广播质量、扩大广播覆盖率、节约频率资源的有效措施,而同步广播激励器则是同步广播网实现高水平运行的关键设备。随着我国中波广播网的建设和发展。亟待有一种高性能的中波同步广播激励器投网运行。本文介绍的数字式中波同步广播激励器,采用数字锁相环、A/D转换与数字滤波器等新技术,有效地提高了同步激励器的校频精度和抗干扰能力。文章最后还给出了一种用计算机进行频率反馈测控的新方案。
The implementation of medium-wave synchronous broadcasting is an effective measure to improve the quality of medium-wave broadcasting, expand coverage of radio coverage and save frequency resources. Synchronous broadcast exciter is the key equipment for achieving the high-level operation of synchronous broadcasting network. With the construction and development of China’s medium-wave broadcasting network. Urgent need for a high-performance medium-wave synchronous broadcast incentive cast nets run. In this paper, the digital medium-wave synchronous broadcast exciter, digital phase-locked loop, A / D conversion and digital filters and other new technologies to effectively improve the synchronous exciter frequency accuracy and anti-interference ability. Finally, the article also gives a new program of frequency feedback measurement and control by computer.