基于CRLH的小型化三频LTE微带天线设计

Miniaturized tri-band LTE microstrip antenna based on CRLH

摘要:

研究了一种基于复合左右手传输线理论(CRLH)的小型化三频长期演进(LTE)微带天线，利用CRLH的零阶谐振特性，实现微带天线的小型化，仿真结果显示微带天线的3个工作频段分别为1 840~1 860 MHz,2 130~2 160 MHz,2 620~2 660 MHz。准确覆盖频分双工(FDD) LTE规划的Band3,Band4和Band7，整个天线的电尺寸仅为0.17λ。最后通过对微带天线进行加工实测，验证了仿真的准确性和有效性。多频小型化天线不仅可以大幅节约基站的天馈资源，而且可以有效降低基站建设的成本，该方案具有很强的工程实用价值。

Abstract:

A miniaturized tri-band Long Term Evolution(LTE) microstrip antenna based on the Composite Right/Left-Handed Transmission Line(CRLH) theory is studied. The microstrip antenna is miniaturized by using the zero-order resonance characteristic of CRLH. The simulation results show that the three operating frequency bands of the microstrip antenna are: 1 840-1 860 MHz, 2 130-2 160 MHz, 2 620-2 660 MHz. The Band3, Band4, and Band7 of the Frequency Division Duplexing(FDD) LTE plan are accurately covered. The electrical length is 0.17λ. Finally, the microstrip antenna is processed and measured to verify the accuracy and effectiveness of the simulation. The multi-frequency miniaturized antenna can not only save the antenna feed resources of the base station greatly, but also cut the cost of base station construction effectively.