现代电子技术Issue(5)：70-73,76,5.
一种宽带和小型化的新型微带单极子天线
Novel miniature wideband microstrip monopole antenna
摘要
Abstract
A conventional monopole antenna has limitations in the aspects of narrow bandwidth and long physical length un⁃der the condition of low frequency,which limits its engineering application. Here,a microstrip monopole antenna which has properties of wideband and miniaturization is proposed. By employing the conformal technology,this antenna is printed on a thin and soft PCB(printed circuit board) and glued on the surface of a dielectric cylinder to reduce its cross⁃sectional area. The edge of the radiation element is shaped by using a Koch fractal configuration with the second iteration,and thus the size of the antenna is considerably reduced in comparison with that of the antenna utilizing the commonly⁃used rectangular radiation element. To enhance the antenna′s bandwidth under the condition of miniaturization,the antenna loads a metal plate at its top and a metal sleeve around it. The effects of the fractal shape,as well as the dimension of the metal plate,metal sleeve and dielectric cylinder on the performances of the antenna are analyzed,and then a prototype working at UHF(ultra⁃high frequency)is designed and fabricated. Simulation and measured results show that the ||S11 <-10 dB impedance bandwidth is 74%(0.82~1.8 GHz),while the electrical height for the antenna is only 0.13λ,where λ is the wavelength of the low bound of the antenna′s working frequency band.关键词
宽带/小型化/共形/分形/单极子天线Key words
broadband/miniaturization/conformal/fractal/monopole antenna分类
信息技术与安全科学引用本文复制引用
马志锋,陈星..一种宽带和小型化的新型微带单极子天线[J].现代电子技术,2013,(5):70-73,76,5.基金项目
国家自然科学基金委员会与中国工程物理研究院联合基金[NSAF 基金 No.U1230112]资助 （）
