Koch岛分形天线基模和高次模研究  

Research into The Fundamental Mode and High-order Mode of Koch Island Fractal Antenna

作　　者：陈宏[1] 

机构地区：[1]船舶重工集团公司723所,扬州225001

出　　处：《舰船电子对抗》2014年第3期94-96,共3页Shipboard Electronic Countermeasure

摘　　要：主要研究了Koch岛分形天线的基模和高次模。研究表明,Koch岛分形天线高次模和基模都具有良好的辐射性能,且2种模式频比可达4.6∶1。基模的电流分布在天线的中间区域;高次模的电流分布在分形不规则的边界,形成强烈谐振。对Koch岛分形天线的基模和高次模的深入研究,为设计出性能优良的大频差天线打下了基础。This paper mainly studies the fundamental mode and high-order mode of Koch island fractal antenna.The study shows that both fundamental mode and high-order mode of Koch island fractal antenna has good radiation performance and the frequency ratio of two modes can reach 4.6：1.For the fundamental mode,the current is concentrated in the middle area of antenna,and for the high-order mode,the current is strongly resonant in high irregularity of the fractal boundary.Deep study of fundamental mode and high-order mode of koch island fractal antenna can provide a base for designing high performance antenna of two very different frequencies.

关 键 词：分形天线 基模 高次模 大频差 

分 类 号：TN821.4[电子电信—信息与通信工程]