基于复合左右手传输线的2.45GHz微带天线设计  

Compact 2.45GHz microstrip antenna design using composite right/left-handed transmission lines

作　　者：韩宇南[1] 郭建卓 李学斌[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《电波科学学报》2016年第2期314-318,共5页Chinese Journal of Radio Science

基　　金：国家留学基金委公派留学基金(No.201208110396);中央高校基本科研业务费(ZY1113;YS1404)

摘　　要：基于复合左右手传输线基本原理,提出了电磁带隙结构的双负媒质微带天线设计方法,并制作了2.45GHz的微带天线.该微带天线由2个单元的电磁带隙组成,此电磁带隙结构经过优化采用非均匀结构,可通过调整贴片尺寸和金属过孔半径来改变电磁带隙结构单元等效电路的并联部分电容和电感,进而调节天线的谐振频率.设计并制作的微带天线其贴片整体尺寸为53.2mm×19.8mm,在2.45GHz的回波损耗为-32.6dB,方向图近似为8字形方向图,最大增益为0.72dB.仿真和测试的回波损耗、方向图符合得很好,从而验证了这种设计方法的有效性.Based on the composite right/left-handed transmission lines, a compact 2.45 GHz antenna with electromagnetic bandgap （EBG） double-negative （DNG） meta-materials is designed and manufac- tured. The two electromagnetic bandgap （EBG） structures modified by adjusting to non-uniform struc- tures are used as the basic radiation part of microstrip antenna. The parallel capacity and inductance of e- quivalent circuit can be adjusted by the size of the microstrip patch and the radius of via respectively, there- fore, the resonant frequency can be determined. Moreover, a microstrip antenna operating at 2.45 GHz is designed and manufactured with the dimension of 53.2 mm× 19.8 ram. The return loss at 2.45 GHz is -32.6 dB, the radiation pattern is roughly 8 shaped radiation pattern and the maximum gain is 0.72 dB. The measurement results fit very well with the simulation, which validates the effectiveness of the proposed design.

关 键 词：微带天线 复合左右手传输线 电磁带隙 双负媒质 

分 类 号：TN713.5[电子电信—电路与系统]