摘要
研究天线性能优化问题,为了满足多个无线通信系统实现多系统收发共用,天线需在宽频带及不同频段下工作。为了得到优化的谐振频率和宽带,通过在矩形微带线上开两条对称的槽得到E型贴片天线,实现天线的双频功能,利用电磁仿真软件IE3D建立天线模型,通过IE3D对天线的性能进行仿真和分析,同时使用粒子群优化算法对其关键性参数进行了自适应优化,得出天线的具体尺寸。仿真结果表明,天线-10dB阻抗带宽分别为125 MHz(2400-2525MHz)和275MHz(5575-5850MHz),能够满足WLAN(2400-2484 MHz/5725-5825 MHz)的通信需求。优化的天线结构简单,具有很好的双频特性,在工作带宽内有很好的全向辐射特性。
In order to realize the multi - system sharing and transmitting - receiving sharing for multiple wireless communication systems, an antenna must work under broadband and different frequency. An E - shaped patch was formed by opening two symmetrical cracks on the patch of rectangular microstrip antenna. The model for the E - shaped mierostrip antenna was set up and simulated by IE3D. The antenna performance was simulated and analyzed using IE3D software package while the important parameters of the antenna（ patch length and width, rectangular groove length and width, the depth of insertion of antenna feeder） were optimized adaptively using PSO algorithm. The simulation resuhs demonstrate that the - 10 dB impedance bandwidths of the antenna are 125 MHz （2400 - 2525 MHz） and 275 MHz （ 5575 - 5850MHz）, respectively, which can meet the requirements of WLAN （ 2400 - 2484 MHz/5725 -5825 MHz） bands applications. The proposed antenna has simple structure, with good dual -frequency characteristic and good omnidirectional radiation characteristics in the operating bands.
出处
《计算机仿真》
CSCD
北大核心
2013年第6期214-217,共4页
Computer Simulation
基金
船舶工业国防科技预研基金项目(10J3.5.2)
江苏高校优势学科建设工程资助项目
关键词
粒子群优化算法
双频
天线
Particle swarm optimization （ PSO ）
Dual - frequency
Microstrip antenn
