摘要
采用分布式PIN开关和并发双波段阻抗变换网络,实现了一种可重构高效率多波段功率放大器。与其他可重构放大器相比,该功率放大器降低了输出匹配电路的设计复杂度和开关对匹配电路的影响,有效节约了频谱资源,电路结构简单。双扇形开路微带线的使用拓展了高输入阻抗偏置电路的带宽。在进行匹配电路设计时,考虑了晶体管的寄生参数。仿真结果表明,该功率放大器具有高输出效率和良好的增益平坦度,验证了该方案的可行性。
A reconfigurable multi-band highly efficient power amplifier was implemented by adopting a design method of distributed PIN switch and concurrent dual-band impedance transformation network.Compared with other design of reconfigurable amplifier,this method could reduce the complexity of the output matching circuit design and the influence of switches on the matching circuits dramatically.The overall circuit structure was simple,and the spectrum resources were saved effectively.The use of double sector open microstrip lines expanded the bandwidth of high input impedance biasing circuits.In the design of matching circuits,the parasitic parameters of transistors should be considered.Simulation results showed that the proposed power amplifier achieved high output efficiency and good gain flatness,which having revealed the feasibility of the solution.
引文
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