基于虚拟仪器技术的高频功率放大器分析仪

High Frequency Power Amplifier Analyzer Based on Virtual Instrument Technology

以LabVIEW虚拟仪器技术为依托,借助LabVIEW与Multisim联合通信技术,设计开发了基于虚拟仪器技术的高频功率放大器分析仪。利用LabVIEW强大的编程与数据处理能力,完成了对电路参数的设置与采集。研究了偏置电阻对导通角的影响,分析了导通角对电路输出功率、集电极效率以及发射极输出信号波形的影响,实现了测量、显示、分析的一体化,并将由于偏置电阻或导通角的改变而导致的电路输出所发生的变化,以数据与图形相结合的方式直观的展示于仪器界面。该分析仪提高了电路参数设置及电路性能分析的直观性与准确度,为电路关键参数设计及性能动态分析提供了一个高效的自动化仿真训练平台。

Relying on the virtual instrument technology of LabVIEW, using co-simulation of LabVIEW and Multisim, the paper designs and developed a high-frequency power amplifier analyzer based on the virtual instrument technology. Using the powerful programming and data processing capabilities of LabVIEW, parameters can be set and acquired, the effect of the bias resistance on the conduction angle is studied, the influence of conduction angle on output power, collector efficiency and waveform of emitter output signal are analyzed, the integration of measurement, display and analysis have been realized. With the combination of data and graphics, the changes due to bias resistance or conduction angle in the circuit output are visually displayed on the instrument interface. The analyzer improves the intuitiveness and accuracy of circuit parameter setting and performance analysis, provides an efficient automated simulation training platform for circuit key parameter design and dynamic performance analysis.