摘要
为提高现代无线通信系统的频谱利用率,降低系统成本,对双频低噪声放大器进行了深入研究,提出一种利用新型双频匹配结构来设计双频低噪声放大器的方法。这种双频匹配结构由实阻抗双频变换器和双枝节线结构双频匹配电路组成,双枝节线结构双频匹配电路能够实现双频点复阻抗到实阻抗的匹配,实阻抗双频变换器能够实现两个频段上的实阻抗匹配。仿真结果表明这种方法设计的双频低噪声放大器电路结构简单、成本低廉、性能优良且易于加工,两个中心频率可任意选择,具有较高的实用价值。
To improve the spectrum utilization efifciency and reduce cost, this paper makes further research in dual-band low noise ampliifer. A novel dual-band matching structure is proposed to design the ampliifer. The proposed dual-band matching structure consists of real impedance dual-band converter and double stub line structure. And the double stub line structure can convert complex impedance to real impedance in dual band, while the real impedance dual-band converter can realize real impedance matching in dual band. Moreover, the simulation results show that the dual-band low noise ampliifer is of simpler structure, fewer cost, easier processing and better function. Due to its two free center frequencies, it will result in higher practical value.
出处
《移动通信》
2016年第20期88-91,96,共5页
Mobile Communications
关键词
双频
低噪声
匹配
传输线
阻抗变换
dual-band
low noise
match
stub line
impedance converter
