甚高频数据传输电台的混频电路设计

Mixer Circuit Design for VHF Radio Data Transmission

针对目前混频电路在数据传输电台领域应用中存在的不足,提出了基于LT5560混频器的无线数据电台的第一混频设计方案,采用适用于混频器设计指标的匹配阻抗,实现数据通信的快速准确传输。阐述了混频电路的设计思想,对设计中的关键性问题,如混频器的选择和混频电路的实验设计进行了详细的探讨和分析。所实现的接口电路硬件简单,用较低成本的处理器替代高成本专用处理器,降低电路成本,且通用性强,可以根据应用环境的需要,接入到各种嵌入式设备,实验结果表明,该电路具有可应用性。

Presently there are some disadvantages in the application of data transmission mixer circuit in the radio.A design of LT5560 mixer was introduced based on wireless data radio first mixer.The impedance and data communication that matched the mixer design specifications were adopted to realize the fast and accurate transmission.The mixer circuit design idea was described in detail.The key issues of the design,such as the mixer selection and mixer circuit experimental design were carefully discussed and analyzed.The application of the interface designed is very comprehensive in low cost.The processor can be used instead of expensive processor to reduce the cost of circuit.The interface can be connected to any embedded equipment with the requirements of application.The experimental result showed that this device was in high applicability.