基于谐波调谐技术的功率放大器研究

Research on Power Amplifier Based on Harmonic Tuning Technology

作为卫星有效载荷系统中功耗和热耗的最大载体,功率放大器的效率高低反映了系统整体效率的高低。文章应用谐波调谐的方法,实现了功放设计中对二次谐波和三次谐波的利用;有别于传统的功放设计,谐波调谐功放通过两端匹配设计实现谐波对电流和电压波形的整形,能够在提高功放漏极效率的同时保证输出功率也有可观提升;最后,通过选取CREE公司的CGH40010F氮化镓晶体管进行设计仿真,验证了谐波调谐技术对于功放性能优化的有效性。

As the largest carrier of power consumption and heat consumption in the satellite payload system,the overall efficiency of the system is reflected by the efficiency of the power amplifier.The article shows the second harmonic and the third harmonic are realized through the method of harmonic tuning in the design of the power amplifier.Different from the traditional power amplifier design,the current and voltage waveform are shaped by the harmonics through the two-terminal matching design,which the drain efficiency of the power amplifier is improved while ensuring that the output power is also significantly improved;Finally,the design simulation is carried out using Cree’s CGH40010F GaN transistor to verify the effectiveness of the harmonic tuning technology for power amplifier performance optimization.