摘要
设计了一款并联馈电网络,通过采用一个四端口的功分器来实现信号的等幅同相馈电,并根据微带线-缝隙耦合原理,调整微带线和缝隙的尺寸使馈电结构在相对较宽的频带内获得最大的功率传输。经过仿真软件分析可得馈电网络的带宽覆盖了1.5GHz-3.8GHz,回波损耗S11<-10d B的相对带宽达到86.8%,在整个频带内实现了等幅同相馈电。此馈电结构设计紧凑,易于合成,可适用于移动通信领域中的全向性天线。最后将此馈电网络应用于全向性天线中去,验证了结构的实用性和正确性。
A novel kind of parallel feeding network was designed.Firstly,the structure is adopted a four port power splitters to achieve the signal in equal- amplitude and phase.Secondly,according to the microstrip line- slit coupling principle the antenna structure achieve the maximum power transmission impedance matching within a relatively wide frequency band.Through simulation software can be obtained feeding network bandwidth covers the whole frequency range in 1.5- 3.8 GHz,the relative bandwidth of the reflection coefficients S11- 10 d B can reach 86.8%,the antenna achieves an equal- amplitude and phase over the whole frequency band,and its structure is simple and compact,easy to integrate,it can be used for the omnidirectional antenna of mobile communications.Finally,applying this feeding network to an omnidirectional antenna,which confirms the correctness and practicability of this structure.
出处
《电子质量》
2016年第2期35-38,共4页
Electronics Quality
关键词
馈电网络
宽带特性
等幅同相
基站天线
feeding network
wideband characteristics
equal-amplitude and phase
base station antenna
