双频带巴伦馈电的宽带双频印刷偶极子设计  

Wideband and Dual-Band Design of Aprinted Dipole Antenna Integrated With Dual-Band

作　　者：杨林[1] 栗曦[1] 杨彦炯[1] 

机构地区：[1]西安电子科技大学微波与天线国家重点实验室,西安710071

出　　处：《微波学报》2010年第S1期99-102,共4页Journal of Microwaves

摘　　要：研究一种巴伦馈电双频印刷偶极子天线。为了使印刷偶极子天线工作在WLAN频段,H形状的缝隙开在偶极子两个臂上。优化无巴伦馈电的辐射单元,使得天线在回波损耗小于-10dB的情况下工作在2.4GHz(2180-2750MHz)和5.2GHz(5040-5480MHz)。为了展宽带宽,本文设计了一种改进的Marchand巴伦,它能提供两个谐振点以增加阻抗带宽。通过优化辐射单元和双频带巴伦,设计了工作在2150-2750MHz和5050-6230MHz的印刷偶极子天线。设计公式在文章中已经给出,计算和测试结果吻合得很好。A dual-band printed dipole antenna with integrated balun feed is given in this paper.H-slot is etched on the arms of the printed dipole antenna to achieve the dual-band operation with resonances at WLAN bands.The radiating element without balun is optimized and operates at 2.4 GHz(2180-2750 MHz)and 5.2 GHz(5040 MHz-5480 MHz)where return loss are less than-10 dB.In order to further get a lager bandwidth,a modified Marchand balun is designed for dual-band operation,which can provide two resonances in each band to enhance impedance bandwidth.By co-designing the radiating element with the dual-band balun,an antenna covering 2150-2750 MHz and 5050-6230 MHz bands has been achieved.The design equations for modified balun have been presented and agreement between calculation and measurement is good.

关 键 词：印刷偶极子天线 双频带 Marchand巴伦 

分 类 号：TN821.4[电子电信—信息与通信工程]