基于LTCC宽频带双频差分天线的研究与设计  

Design and Analysis of Broadband Differential Dual-Frequency Antenna Based on LTCC

作　　者：安婷婷[1,2] 张文梅[1] 

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]中国移动通信集团山西有限公司信息技术分公司,山西太原030009

出　　处：《测试技术学报》2011年第1期22-28,共7页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(60771052);国家博士后基金特别资助项目(200801424);山西省自然科学基金资助项目(2006011029);太原市科技资助项目(0703004)

摘　　要：提出了一种新型宽频带双频差分天线.该天线基于低温共烧陶瓷(Low Temperature Co-Fired Ce-ramics,简称LTCC)技术,采用矩形环状贴片,并使用两条叉形微带馈线进行差分馈电,是一种具有平衡结构的宽缝隙天线,该结构使得天线拥有很宽的频带宽度。天线两频段的中心频率为2.63 GHz和5.13 GHz,相对带宽分别为8.37%(2.57 GHz～2.79 GHz)和29.04%(4.24 GHz～5.73 GHz),奇模反射系数分别为-4.43 dB和-15.67 dB.天线具有良好、稳定的全向辐射特性和增益.理论模拟和实际测量结果基本吻合.A novel broadband differential dual - frequency antenna is proposed. The antenna is designed on an LTCC （Low Temperature Co-Fired Ceramics） substrate. The rectangular ring patch is etched on the top of the substrate, and the fork-shaped microstrip feedline is on its back. It is a wide slot antenna with a balanced structure, and is fed by the differential signal. This substructure makes the antenna a wide bandwidth. The proposed antenna can work at both 2.63 GHz and 5.13 GHz, with the odd mode reflection coefficients - 14.43 dB and - 15.67 dB respectively. A good broadband characteristic is obtained. The relative bandwidths for the lower and higher working band are 8.37 % （2.57 GHz--2.79 GHz） and 29.04 % （4.24 GHz--5.73 GHz）. The proposed antenna has a high gain and the nearly omni- directional radiation patterns at both two working bands. Good agreement between the measured and the simulated results has been achieved.

关 键 词：无线通信 差分天线 双频天线 宽频带 低温共烧陶瓷 

分 类 号：TN821[电子电信—信息与通信工程]